diagnostic manual

Diagnostic Manual

MAN-01065

DIAGNOSTIC MANUALXUV700 (Diesel)

UICU

Revision — 1OCT - 2021Published by — Service Engineering

Technical Hub

The repair methods given by the manufacturer in this document are based on the technical specifications, current at the time of release. The methods may be modified as a result of changes introduced bythe manufacturer in the production of the various component units and accessories from which the vehicles are manufactured. The reproduction, translation, transmission, in part of or whole of the presentdocument, are prohibited without the prior written consent of Mahindra & Mahindra Ltd. The use of this document by any person other than the trained personnel, at the Authorized Service Centre ofMahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for penalty/prosecution© 2021 Mahindra & Mahindra Ltd.

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Table of Contents

1 ABBREVIATIONS.......................................................................................................................... 5

2 HOW TO USE THIS MANUAL .................................................................................................... 7

3 STANDARD TEST PROCEDURE .............................................................................................. 8

4 RECOMMENDED TROUBLE SHOOTING PROCESS ......................................................... 11

5 WARRANTY & OTHER INFORMATION ................................................................................. 12

6 ADRENOX— SERVICE MODE................................................................................................ 13

7 IMMOBILIZER SYSTEM OVERVIEW ...................................................................................... 15

7.1 KIT LOCK SET WITH UNIVERSAL IMMOBILIZER........................................................... 15

7.2 EMS— MD1CS018............................................................................................................ 16

7.3 CRANK AND START CONDITION FOR BOSCH MD1CS018/UICUCOMBINATION................................................................................................................... 17

7.4 IGNITION KEY INTERLOCK SYSTEM (Only applicable for RKE AT Variant) .................. 18

8 EMS ECU AND UICU REPLACEMENT .................................................................................. 19

8.1 EMS ECU (Bosch MD1CS018) REPLACEMENT.............................................................. 19

8.2 UICU REPLACEMENT....................................................................................................... 19

9 i-SECURE TOOL LOGIN............................................................................................................ 20

10 EMS ECU UNLOCK .................................................................................................................... 22

10.1 EMS ECU UNLOCKING PROCEDURE............................................................................. 23

11 KEY / TRANSPONDER CHECKING........................................................................................ 26

11.1 UICU KEY CHECKING PROCESS.................................................................................... 27

12 INDEX OF DTC’s ......................................................................................................................... 35

13 DTC BASED DIAGNOSTICS .................................................................................................... 37

13.1 B2F48–00 — F() / Signature 1 Mismatch ........................................................................... 38

13.2 B2F44–00 — NO ECM CHALLENGE ................................................................................ 41

13.3 B2F43–00 — TXP TABLE EMPTY..................................................................................... 45

13.4 B2F40–00 — MISSING TRANSPONDER/NO RESPONSE.............................................. 47

13.5 B2F41–00 — TAG AUTHENTICATION FAILED ................................................................ 49

13.6 B2F42–00 —WRONG TXP ............................................................................................... 51

13.7 B2F44–00 — NO ECM CHALLENGE (EMS ECU NODE ABSENT) ................................. 54

13.8 B2F4C–00 — CHECKSUM MISMATCH ............................................................................ 56

Diagnostic ManualXUV700 (Diesel) UICU MAN-01065

OCT - 2021/Rev 1

4The repair methods given by the manufacturer in this document are based on the technical specifications, current at the time of release. The methods may be modified as a result of changes introduced by themanufacturer in the production of the various component units and accessories from which the vehicles are manufactured. The reproduction, translation, transmission, in part of or whole of the present document, areprohibited without the prior written consent of Mahindra & Mahindra Ltd. The use of this document by any person other than the trained personnel, at the Authorized Service Centre of Mahindra & Mahindra Ltd., willamount to unauthorized use and shall be liable for penalty/prosecution© 2021 Mahindra & Mahindra Ltd.

13.9 B2F49–00 — NO ECM ACKNOWLEDGEMENT ............................................................... 59

13.10 B2F4A–00 — NEGATIVE ACKNOWLEDGEMENT ........................................................... 61

13.11 B2F47–00 — IMMOBILIZER ID NOT PROGRAMMED..................................................... 64

13.12 B2F4F–00 — ICU EMS ID NOT PROGRAMMED/INVALID .............................................. 66

13.13 B2F47/4F/43/50–00 — UICU BLANK................................................................................. 68

13.14 B2F50–00 — SK NOT PROGRAMMED/INVALID ............................................................. 70

13.15 B2F4E–00 — TAG FEATURE CODING NOT DONE......................................................... 72

13.16 B2FFE–00 — EMS AUTHENTICATION LOCKED............................................................. 74

13.17 B2F4D-00 — ANTENNA COIL BREAKAGE ...................................................................... 76

13.18 U2817–00 — IMMO FEATURE CODE ERROR/ILLUMINATION RING............................ 78

13.19 U1517–00 — IMMO VARIANT CODE ERROR.................................................................. 80

13.20 U1217–00 — IMMO BUS OFF ERROR ............................................................................. 82

13.21 U1317–00 — VIN MISMATCH IN IMMO ............................................................................ 84

13.22 U1117–00 — NO ICU RESPONSE/ICU NODE ABSENT.................................................. 86

14 EMS ECU CHECKING PROCEDURE ..................................................................................... 88

14.1 EMS ECU POWER SUPPLYAND GROUNDWIRE CHECKING...................................... 89

15 UICU CHECKING PROCEDURE.............................................................................................. 95

15.1 UICU POWER SUPPLYAND GROUNDWIRE CHECKING PROCEDURE..................... 96

16 CAN CIRCUIT CHECKING .....................................................................................................101

16.1 CAN CIRCUIT CHECKING PROCEDURE ......................................................................102


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1 ABBREVIATIONS

ABS Anti-lock Braking System

AMP Amplifier (Branded Audio)

BLAC Brush-less Alternative Current

CAN-H CAN High Signal

CAN-L CAN Low Signal

C-EPS Column Type Electronic Power Steering

DATC Dual Automatic Temperature Control

ECU Electronic Control Unit

EEPROM Electrically Erasable and Programmable Read Only Memory

EPS Electric Power Steering

ESCL Electronic Steering Column Lock

ETC Electronic Temperature Control

EMS Engine Management System

FATC Fully Automatic Temperature Control

FCM Front Camera Module

FDHM Flush Door Handle Module

FPAS Front Park Assist Sensor

FRM Front Radar Module

FVC Front View Camera

HVAC Heating Ventilation and Air Conditioning

IC Instrument Cluster

ICC Intelli Command Centre

ICU Immobilizer Control Unit (IMMO)

ITM Interactive Torque Management

IS Infotainment System

MBFM Mahindra Body Function Module

MCU Micro Control Unit

MGM Mahindra Gateway Module

PKE Passive Keyless Entry

PWM Pulse Width Modulation


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RVC Rear View Camera

RPAS Reverse Park Assist System

RLS Rain Light Sensor

SAS Steering Angle Sensor

SCM Seat Control Module

SENT 1 Torque Sensor Signal 1

SENT 2 Torque Sensor Signal 2

SENT Single Edge Nibble Transmit

SRS Supplementary Restraint System

SVS Surround View System (360)

TAS Torque and Angle Sensor

TPMS Tyre Pressure Monitoring System

VSS Vehicle Speed Sensor

VBAT Battery Voltage

WLC Wireless Charger

WSS Wheel Speed Sensor

• IGNITION CYCLE : Ignition ON →Ignition OFF → Ignition ON• DRIVING CYCLE: Ignition OFF →Ignition ON →Engine cranked and started→At

engine idle condition itself, provide accelerator pedal input until the engine rpm isgreater than 2000 rpm →Ignition OFF

• WARM-UP CYCLE: Ignition ON → At engine idle condition itself, ensure that thecoolant temperature exceeds 30 degree celsius→ Ignition OFF


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2 HOW TO USE THIS MANUAL

If DTC code is known, then go to the DTC BASED DIAGNOSIS, and click on the DTC. TheDTCs are hyperlinked to the respective trouble shooting procedures.

The following is the structure of the UICU Diagnostic Manual• DTC and a brief description of the system• DTC Information & Causes– Normal operation of the system– DTC detecting conditions– DTC reaction on vehicle and telltale lamp status– Healing Condition– Probable causes of Failure

• Circuit Schematic• Connector location• Connector face views and information• DTC Checking Procedure• Diagnostic Procedure

Always use the UICU Diagnostic Manual along with the vehicle’s Wiring Manual.


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3 STANDARD TEST PROCEDURE

TESTING OF VOLTAGE POTENTIAL• Connect the ground lead of a voltmeter to a known good ground or battery ground• Connect the other lead of voltmeter to selected test point. The vehicle ignition may need tobe turned ON to check voltage.

TESTING FOR CONTINUITY (RESISTANCE)• Disconnect the power supply (battery, ignition switch OFF)• Set the Multimeter Mode selector to measure resistance• Connect one lead of the multimeter to one side of the circuit being tested• Connect the other lead to the other end of the circuit being tested. Low or no resistancemeans good continuity

M

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Ω


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TESTING FOR A SHORT TO GROUND• Disconnect the power supply (battery, ignition switch OFF)• Set the Multimeter Mode selector to measure resistance, select resistance rangeappropriately

• Connect one lead of the Multimeter to one side of the circuit being tested• Connect the other lead to battery ground• Starting at the fuse block, move / shake the wiring harness about six to eight inches apartand look at the Multimeter display.

• If the Multimeter registers resistance value / audible beep, then there is a short to ground inthat area of the wiring harness.

TESTING FOR A SHORT TO GROUND ON FUSES POWERING SEVERAL LOADS• Switch OFF the ignition and disconnect the battery.• Referring the wiring diagrams, disconnect or isolate all items on the suspected fusedcircuits.

• Replace the blown fuse.• Supply power to the fuse by turning ON the ignition switch or re-connecting the battery asapplicable.

• Start connecting or energizing the components in the fuse circuit one at a time. When thefuse blows, the circuit with the short to ground has been identified.

TESTING FOR AVOLTAGE DROP• Set the Multimeter Mode selector to measure voltage, select voltage range appropriately• Connect positive lead of voltmeter to one side of the circuit closest to battery positiveterminal.

• Connect other lead of voltmeter to the negative side of component/switch.• Switch ON the component/load.• The voltmeter will show the difference in voltage between the two points.

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M


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INTERMITTENTAND POOR CONNECTIONMost intermittent electrical problems are caused by faulty electrical connections or wiring. It isalso possible for a sticking component or relay to cause a problem. First ask the customer fordetails about the driving conditions, weather conditions, frequency of occurrence and troublesymptoms and then try to recreate the trouble symptoms. Before replacing a component orwiring assembly, check the following items.• Connectors / inter—connector are fully locked• Check for water traces in the fuse or relay box / connectors• Any spread terminals or pin back out• Terminals in the wiring assembly are fully seated into the connector/component and lockedinto position

• Dirt or corrosion on the terminals. Any amount of corrosion or dirt could cause anintermittent problems

• Damaged connector/component casing exposing the item to dirt or moisture• Wire insulation that has rubbed through, causing a short to ground• Some or all of the wiring strands broken inside of the insulation• Wiring broken inside of the insulationCarry out the following checks with the connectors and components to confirm whether thetrouble symptom occurs.• Gently shake the connector up, down and to the left and right• Gently shake the wiring harness up, down and to the left and right.• Gently shake the fuse / relay board, etc. by hand.• Gently shake the wiring harness at the location of hanging and other moving parts


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4 RECOMMENDED TROUBLE SHOOTING PROCESS

Customer complaint Record/Understand Customer Verbatim• What happened?• When did it happen?• Were any specific events recorded/observed beforethe complaint?• Does it happen all the time?• Does it happen only in certain conditions?

Verify the complaint and perform visual checks

Search for published quick solution in TEKnet.

Follow DTC based diagnosis

Follow Symptom based diagnosis (If available)

Contact TEKliner with TAR

(Technical Assistance Request)


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5 WARRANTY & OTHER INFORMATION

All failures/complaints encountered in UICU and other system components should be reportedthrough Service Complaint Report (SCR). Replacement of UICU and other systemcomponents requires approval of the TEKline. Ensure that a TAR# is raised in the TEKnetwebsite for approval, attaching the SCR. While raising a warranty claim, the TAR numbershould be quoted on the warranty claim.

Only a trained and certified CoTEK can raise a TAR (in TEKnet website)


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6 ADRENOX— SERVICE MODE

Enabling Service mode from the AdrenoX display will disable all remote functions from theAdrenoX connect app.

Applicable Vehicle Variants

AX3 AX5 AX7 AX7 L AX7 C AX7 T

The above mentioned vehicle variants are equipped with remote functions from the AdrenoXapp, make sure to enable Service Mode before performing any Service/ Testing/ Diagnosticactivity in the vehicle.

Follow the below steps to enable and disable the Service Mode:1. Switch ON the Ignition.2. Click the “Setting” icon (Top Right Side corner) in the AdrenoX screen.

3. Click the “Vehicle” icon in the All Settings screen

4. In the Vehicle Settings screen, click the Access and view the list of functions.


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5. Scroll down to locate the Service Mode function and slide the button left to right toenable the Service Mode.

6. On completing service activity, disable the Service Mode by sliding the button right toleft and hand back the vehicle.


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7 IMMOBILIZER SYSTEM OVERVIEW

7.1 KIT LOCK SET WITH UNIVERSAL IMMOBILIZER

An immobilizer control unit is an electronic device fitted in the vehicle which prevents vehicle tostart unless a valid key is being used to start the vehicle. This type universal immobilizer isused across many platform, but in “XUV 7OO” Diesel variant it couples with only MD1CS018EMS ECU.

UICU APPLICABLE SOFTWARE VERSION FOR

MODELS SOFTWARE VERSION

XUV 7OO (AX3/AX5/MX) VARIANTS WITHUICU

D16

• Always Refer electronic part catalogue for choosing KIT lockset and UICU partnumber before making order


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7.2 EMS—MD1CS018

The EMS is an electronic control unit that ensures optimum performance from the engine,delivering the required amount of power, torque and also ensuring the compliance with theemission norms. The All New THAR uses a Bosch MD1CS018 4–cylinder EMS ECU.


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7.3 CRANK AND START CONDITION FOR BOSCH MD1CS018/UICUCOMBINATION

Sl.No CONDITION CHECKLAMP

STATUS CRANKING VehSTARTING

1 Key notlearnt

IMMO BLINKINGNO NO

ENGINE BLINKING

2 EMS & UICUDataMismatch

IMMO OFFYES NO

ENGINE BLINKING

3 EMS ECUNEW

IMMO OFFYES NO

ENGINE BLINKING

4 UICU NEW IMMO BLINKINGNO NO

ENGINE BLINKING

5 KEY NEW IMMO BLINKINGNO NO

ENGINE BLINKING

6 EMS ECULOCKED

IMMO OFFYES NO

ENGINE BLINKING

7 EMS ECUNODEABSENT

CLUSTERDEAD

CLUSTERDEAD NO NO

8 UICU NODEABSENT

IMMO ONYES NO

ENGINE BLINKING


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7.4 IGNITION KEY INTERLOCK SYSTEM (Only applicable for RKE ATVariant)

The Ignition Key cannot be removed from the key barrel unless the TGS lever is moved to P(Park) position.• If the key is stuck in the key barrel due to an malfunction in the TGS lever, remove fuse F43from ENGINE COMPARTMENT FUSE BOX to release the key. And contact AuthorizedMahindra Service Center at the earliest.

• Always before switching OFF the ignition, move the TGS lever to P(PARK) position• Always start the engine while the TGS lever is in P or N with brake pedal depressed

F4360A

F315A

CONTROL SIGNAL

BATTERY

KITLOCKSOLENOID

KEY BARREL

ENGINE COMPARTMENTFUSE BOX

INSTRUMENT PANELFUSE BOX

KEY LOCKCYLINDER

RELAY

KEY LOCKED B Y SOLENOID

MBFM

COIL


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8 EMS ECU AND UICU REPLACEMENT

8.1 EMS ECU (Bosch MD1CS018) REPLACEMENT

Follow the below mentioned procedure whenever EMS ECU is replaced• Refer the electronic part catalogue to choose correct part number MD1CS018 EMS ECU• After replacement of new EMS ECU, use iSMART diagnostic tool and check EMS ECUconnectivity

• Use latest version iFLASH and flash the EMS ECU with the application dataset selected bythe iFLASH

• After successful flashing, turn ignition OFF for 40 seconds and then turn ignition ON• Connect iSMART diagnostic tool and navigate to read ECU tab and check VIN in EMS ECU.Confirm whether the EMS ECU VIN and VIN plate VIN is matching before proceedingfurther

• Open latest version of i-SECURE tool and navigate to platform home page and select EMSECU assignment option to perform EMS ECU assignment

• Share the TPK generated at the 1st stage of EMS ECU assignment to TEKline for ASC orusing Automated BS generate ASC and execute ASC of EMS ECU assignment

• After successful completion of EMS ECU assignment turn ignition OFF for 2 minutes.Check and confirm whether vehicle start normally after ignition reset

8.2 UICU REPLACEMENT

Follow the below mentioned procedure whenever UICU replaced• Refer the electronic part catalogue to choose correct part number UICU• After replacement of new UICU, use iSMART diagnostic tool and check UICU connectivity• Use latest version iFLASH and flash the UICU to write the calibration parameters in theUICU

• After successful flashing, turn ignition OFF for 40 seconds and then turn ignition ON• Connect iSMART diagnostic tool and navigate to read ECU tab and check VIN in UICU.This field should be blank and read as “YYYYYYYYYYYYYYYYY”.

• Open latest version of i-SECURE tool and navigate to platform home page and select UICUassignment option to perform UICU assignment

• Share the TPK generated at the 1st stage of UICU assignment to TEKline for ASC or usingAutomated BS generate ASC and execute UICU assignment ASC

• After successful completion of UICU assignment turn ignition OFF for 2 minutes. Check andconfirm whether vehicle start normally after ignition reset


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9 i-SECURE TOOL LOGIN

• Always use i-SECURE + V4.0.7 and above for all BS6 BOSCH MD1CS018 basedvehicles

• For all BS6 models with MD1CS018 ECU based vehicle, i-SECURE tool will promptfor USERNAME/PASSWORD authentication to enter the tool

• Dealer representative should use their authorised teammahindra eMail ID &Password to login in i-SECURE tool to enter respective platform


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• After successful user authentication, OTP will be shared to team mahindra eMail ID,enter OTP in the text box and click OK

• Please Note, OTP received once to eMail ID is valid only for only 10 minutes and OTPretry is valid for only 180 Seconds. And also, OTP retry for more than three times willclose the i-SECURE application


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10 EMS ECU UNLOCK


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10.1 EMS ECU UNLOCKING PROCEDURE

1. To unlock the EMS ECU, Select EMS ECU Unlock tab from the platform home page

2. The tool will prompt for login user credentials to login, type the credentials and clickSubmit


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3. Enter the OTP received in the registered team mahindra email ID and Click “Ok”

4. Read the pop up message and click “Ok” to proceed


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5. To Unlock the EMS ECU click on the below highlighted “UNLOCK EMS ECU” button

6. Once the EMS ECU is unlocked the “EMS ECU Unlocked Successfully” message willbe displayed


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11 KEY / TRANSPONDERCHECKING


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11.1 UICU KEY CHECKING PROCESS

This is process of checking or validating the key, to ensure that the key is fit to performlearning

1. Open i-SECURE V4.0.7 by double clicking he application icon

2. Select the VCI and click “OK”

3. Select the appropriate vehicle platform, from the vehicle list (XUV 7OO)


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4. Select the engine platform asmHAWK to proceed next


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5. Select the appropriate EMS ECU, MD1C and Click Proceed

6. Enter the Cotek login credentials in the below field and click Proceed to login

7. Enter the received OTP in your teammahindra mail ID


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8. Enter the Four digit OTP in the text box and click OK

9. Read the popup message and click OK


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10. Select the number keys available with the vehicle and click proceed

11. After selecting number of keys available Two keys and click Proceed


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12. Once the first key authentication is completed with “7938 Auth Pass” message, tool willprompt for second key, Change second key in the barrel and click OK

13. Once the second key authentication is completed with “7938 Auth Pass” message, theexact Tag code is written in the UICU and tool will enter the platform home page (HighSecurity Programming)


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11.1.1 Failures in key checking process:

• If only one key is available please select one key and click on proceed. One key in thebarrel will be authenticated and with the same key tool will proceed to high securityprogramming page

• If any of the below listed error observed after clicking on proceed, please retry onceagain to ensure the error. If the same error reoccurs, please proceed as per theexplanation given below in the table

List of Error codes observed during key checking:-

S-L.No

ERROR ROOT CAUSE ACTION

1 Keymanufacturingoperation notdone

Key/Transponder is faulty Replace the key

2 Default Key Same key used or key type isdifferent between two keys

Check and replace the key

3 IMMO SKmismatch

Transponder data mismatch withUICU

Check and replace the key

4 ISA1 UICU access failed orCommunication interrupted

Check VCI/iSMARTconnectivity

5 ISA2 UICU access failed orCommunication interrupted

Check VCI/iSMART connectivity& verify VIN in EMS ECU andUICU

6 VIN Mismatch VIN mismatch between EMSECU and UICU

Check VIN in EMS ECU andUICU

7 ESA1 EMS ECU access failed orConnectivity interference

Check VCI/iSMARTconnectivity

8 ESA2 EMS ECU access failed orConnectivity interference

Check VCI/iSMART connectivity& verify VIN in EMS ECU andUICU

9 ERV VIN read from EMS ECU failed Check VCI/iSMARTconnectivity

10 TEST TXPFailed

Key/Transponder test failed Check and replace key


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12 INDEX OF DTC’s

UNIVERSAL IMMOBILIZER CONTROL UNIT DTC LIST

B2F40–00 Missing transponder/No response

B2F41–00 TAG authentication failed

B2F42–00 Wrong TXP

B2F43–00 TXP table is empty

B2F48–00 F ()/Signature 1 mismatch

B2F44–00 No ECM Challenge

B2F45–00 Authentication failed/time out

B2F49–00 No ECM acknowledgement

B2F47–00 Immobilizer ID not programmed

B2F4F-00 EMS ECU ID not programmed/Invalid

B2F4A–00 Negative acknowledgement

B2F50–00 SK not programmed/Invalid

B2F4C-00 Checksum mismatch

B2F4E-00 Tag feature coding not done

B2F4D-00 Antenna coil breakage

U2817–00 IMMO feature code error

U1217–00 Immo bus off error

B2F4B-00 EEPROM error

U1517–00 Immo variant code error

U1317-00 VIN match in immo


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EMS ECU DTC LIST

B2FFF-00 Immobilizer Authentication failed

B2FF9–00 Immobilizer not present/No ICU response

B2FF7–00 Signature 1 mismatch

B2FF6–00 Signature 2 mismatch

B2FFE-00 EMS ECU Locked

B2FFD-00 ID’s not programmed

B2FFA-00 Invalid checksum


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13 DTC BASED DIAGNOSTICS


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13.1 B2F48–00 — F() / Signature 1 Mismatch

13.1.1 EMS ECU AUTHENTICATION

During every ignition cycle, EMS ECU authenticate with other security components. in order toallow the vehicle to crank and start

DTC Description EMS ECU UICU DTC Description

ImmobilizerAuthentication failed

B2FFF–00 B2F48–00 F ()/ Signature 1mismatch

Signature 1Mismatch

B2FF7–00 B2F45–00 Authentication failed/time out

DTC INFORMATION PROBABLE CAUSES OFFAILURE

NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the signal fromthe EMS ECU is not as expected by the UICUDTC REACTIONS• Immobilizer check lamp: OFF• Engine check lamp: BLINKS• Starter will engage, vehicle will not startHEALING CONDITION• Ignition OFF/ON• Fault not present

• ID’s mismatch in EMS ECU &UICU• Disturbance in CAN circuit• EMS ECU and UICU is out ofsync due to open or short circuitin power or ground wire circuit ofEMS ECU• EMS ECU and UICU is out ofsync due to open or short circuitin power or ground wire circuit ofUICU


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13.1.2 DIAGNOSTIC PROCEDURE

If vehicle ignition turned ON for more than 20 times with DTC —B2F48– 00 (F ()/ Signature 1 mismatch) live in UICU. EMS ECU will get locked, settingDTC — B2FFE-00 (EMS Authentication Locked) live in EMS ECU. To unlock EMS follow“EMS ECU UNLOCK PROCEDURE”

STEP 1 – CHECK CAN CIRCUIT

PRE CONDITION• Turn ON ignition

TEST PROCEDURE• Check CAN circuit

ACCEPTANCE CRITERIA• Is the CAN circuit is OK

ACTION TO BE TAKEN

OK NOT OK

• Go to STEP 2 • Replace or repair the wiring harness

STEP 2 – CHECK EMS ECU POWER AND GROUND CIRCUIT


TEST PROCEDURE• Check EMS ECU power and ground wires

ACCEPTANCE CRITERIA• Is the power and ground circuit of EMS ECU is OK

ACTION TO BE TAKEN

OK NOT OK



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STEP 3 – CHECK UICU POWER AND GROUND CIRCUIT


TEST PROCEDURE• Check the UICU power and ground wires

ACCEPTANCE CRITERIA• Is the power and ground circuit of UICU is OK

ACTION TO BE TAKEN

OK NOT OK

• Connect i-SMARTand try to clear all DTC’s• If the DTC’s not getting cleared, ContactTEKliner for further assistance• If the DTC’s got cleared. Turn OFF the ignition,wait for 2 minutes. Turn ON ignition & Checkwhether the issue is resolved

• Replace or repair the wiring harness• After replacing the wiring harness,Check whether the DTC gotreproduced.• If the DTC reproduced again, contactTEKline


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13.2 B2F44–00 — NO ECM CHALLENGE

13.2.1 SECURITY COMPONENTS

EMS ECU, UICU and the transponder key. All the three components authenticate with eachother during every ignition cycle. Either one of it failed to authenticate or absent, will result inimmobilization of vehicle


ImmobilizerAuthenticationFailed

B2FFF–00 B2F44–00 No ECM challenge

- - B2F45–00 Authentication failed/time out


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when there is nochallenge or invalid challenge received by UICU fromthe EMS ECU, during ignition ONDTC REACTIONS• Immobilizer check lamp : ON• Engine check lamp : BLINKS• Starter will not engageHEALING CONDITION• Ignition OFF/ON• Fault not present

• Key authentication failed• Starting the vehicle before theauthentication is complete• Disturbance in CAN circuit• EMS ECU flashing not proper• EMS ECU internal failure• EMS ECU programming notdone


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If any of the below key/Transponder related DTC are present , tryto clear those DTC first.• B2F40–00 — Missing transponder• B2F41–00 — Tag authentication failed• B2F42–00 — Wrong TXP• B2F43–00 — TXP ID table empty.

STEP 1 – STARTING VEHICLE BEFORE AFTER RUN IS COMPLETED

PRE CONDITION• Turn OFF ignition

TEST PROCEDURE• Wait for about 2 to 3 minutes

ACCEPTANCE CRITERIA• Try starting the vehicle

ACTION TO BE TAKEN

OK NOT OK

• The immobilization could be because of startingattempt made before after run finished

• Go to STEP 2

STEP 2 – CHECK FOR EMS ECU FLASHING HISTORY• Check the case history, whether EMS ECU flashing is done, before the immobilization• Is the immobilization happened subsequent to flashing the EMS ECU• YES Re-Flash the EMS ECU once again following the procedure• NO Go to STEP 3





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ACTION TO BE TAKEN

OK NOT OK






ACTION TO BE TAKEN

OK NOT OK



PRE CONDITION• Turn ON the ignition



ACTION TO BE TAKEN


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OK NOT OK

• Check and confirm the status of Immobilizer checklamp and Engine check lamp• If the, engine check lamp is still blinking• Replace the EMS ECU with new one and performEMS ECU assignment

• Replace or repair the wiring harness• Check whether the DTC gettingreproduced after the wiring harnessreplacement• If not, check and confirm whether theissue is resolved and vehicle isstarting after a ignition reset


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13.3 B2F43–00 — TXP TABLE EMPTY

13.3.1 UICU TXP TABLE

In universal immobilizer TXP table is the space were transponder ID’s are stored and the sameare compared during every ignition cycle



B2FFF—00 B2F43–00 TXP ID table empty

— — B2F42–00 Wrong TXP

— — B2F45–00 Authenticationfailed/time out

— — B2F44–00 No ECM Challenge

— — U1517–00 IMMO Variant CodeError

— — B2F50–00 SK notProgrammed/INVALID


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the TXP table inthe UICU is emptyDTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp: BLINKS• Starter will not engageHEALING CONDITION• Ignition OFF/ON• Fault not present

• TXP table is empty• Key learning not done• UICU is blank


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STEP 1 – PERFORM KEYASSIGNMENT


TEST PROCEDURE• Connect i-SECURE dealer programming tool using garuda VCI in the vehicle and generatean key assignment TPKAlways use i-SECURE + V4.0.7 and above for any security components ECUprogramming in“XUV 7OO”

ACCEPTANCE CRITERIA• Key assignment TPK should be generated

ACTION TO BE TAKEN

OK NOT OK

• If the TPK generated, share it to TEKline throughTAR to get ASC or generate ASC using automatedblue signature and execute ASC. And turn ignitionOFF for 2 minutes.• After 2 minutes turn ignition ON and Check & clearDTCs• And crank the engine to start the vehicle, if thevehicle didn't start on first attempt, reset theignition again and try cranking again

• Contact TEKliner for furtherassistance


OCT - 2021/Rev 1


47

13.4 B2F40–00 — MISSING TRANSPONDER/NO RESPONSE

13.4.1 TRANSPONDER CHIP

Transponder is a chip which is present inside the key, during key authentication this chip willget energized when it is inside the key barrel by the immobilizer ring and transmits RF signal



B2FFF—00 B2F40—00 Missing transponder/No response

— — B2F44—00 No ECM Challenge

— — B2F45—00 Authentication failed/time out

DTC INFORMATION PROBABLE CAUSES OF FAILURE

NORMAL OPERATION• Ignition ON• After successful security authentication, vehiclestarts normally

DTC DETECTING CONDITIONS• This combination is registered when there is nosignal received from the key

DTC REACTIONS• Immobilizer check lamp : ON• Engine check lamp: BLINKS• Starter will not engage

HEALING CONDITION• Ignition OFF/ON• Fault not present

• Defective key transponder• Defective UICU antenna


OCT - 2021/Rev 1



STEP 1 – TRY STARTING THE VEHICLE WITH THE SECOND KEY

PRE CONDITION• Turn ON ignition with second key

TEST PROCEDURE• Check whether Immobilizer check lamp and Engine check lamp is blinking

ACCEPTANCE CRITERIA• Check lamp’s should be OFF and vehicle should start

ACTION TO BE TAKEN

OK NOT OK

• Replace the other key or first key • Replace both keys with new one andperform key assignmentAlways use i-SECURE+ V4.0.7 andabove for any securitycomponents ECU programming in“XUV 7OO”• If the issue still persist, replace theimmobilizer with new one andperform ICU assignment


OCT - 2021/Rev 1


49

13.5 B2F41–00 — TAG AUTHENTICATION FAILED

13.5.1 AUTHENTICATION

During every ignition cycle security components authenticate within each other, to make surevehicle is secured



B2FFF—00 B2F41–00 TAG authenticationfailed

— — B2F44-00 No ECM Challenge



NORMAL OPERATION• Turn Ignition ON• After successful security authentication, vehiclestarts normallyDTC DETECTING CONDITIONS• This combination is registered when the signalreceived from the key is not recognized by theimmobilizerDTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp: BLINK• Starter will not engageHEALING CONDITION• Ignition OFF/ON• Fault not present

• Defective Key transponder• Defective UICU or Antenna coil• TAG feature code not written inUICU (TAG table is empty)• TAG feature code incorrect inUICU


OCT - 2021/Rev 1



STEP 1 – CHECK TAG FEATURE CODING


TEST PROCEDURE• Connect i-SMART diagnostic tool, see whether UICU is detecting• Open UICU read ECU tab and check TAG feature code

ACCEPTANCE CRITERIA• TAG feature code should be “0X00000000020201”

ACTION TO BE TAKEN

OK NOT OK

• Connect i-SECURE tool and enter platform homepage• Select No of keys available and perform key check• If any error observed while performing key check,Contact TEKline for further assistance

• Use i-SECURE programming tooland enter platform home page &perform key check to write correctTAG code in the UICU for theavailable type key. Refer Keychecking procedure• After Tag code writing, Reset ignitionfor 2 minutes and confirm whetherthe issue is resolved• If the DTC still present, ReplaceUICU with new one and performUICU assignment.


OCT - 2021/Rev 1


51

13.6 B2F42–00 —WRONG TXP

13.6.1 WRONG OR NEW KEY

Key which is being used in the vehicle is a valid key but doesn't belong to this vehicle or it isnot yet learnt to the vehicle



B2FFF—00 B2F42—00 Wrong TXP

— — B2F44—00 No ECM challenge


DTC INFORMATION PROBABLE CAUSES OF FAILURE

NORMAL OPERATION• Ignition ON• After successful security authentication, vehiclestarts normally

DTC DETECTING CONDITIONS• This combination is registered when the signalreceived from the key is valid, but not belongs to thevehicle

DTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp: BLINKS• Starter will not engage

HEALING CONDITION• Ignition OFF/ON• Fault not present

• Key learning not happened• Defective key or antenna


OCT - 2021/Rev 1



STEP 1 – CHECK WHETHER CORRECT PART LOCK SET IS FITTED

PRE CONDITION• Turn OFF the ignition

TEST PROCEDURE• Check the part number of UICU and lockset fitted in the vehicle. Refer EPC parts cataloguefor Kit part number

ACCEPTANCE CRITERIA• Immobilizer ECU and lockset part number should be correct as per electronic partscatalogue

ACTION TO BE TAKEN

OK NOT OK

• GO TO STEP—2• Replace the immobilizer ECU or thelock set (Refer electronic partscatalogue before replacing thecomponents)

STEP 2 – CHECK FOR KEY & ANTENNA


TEST PROCEDURE• Check key using i-SECURE latest version. Refer Key checking procedureAlways use i-SECURE + V4.0.7 and above for any security components ECUprogramming in “XUV 7OO”

ACCEPTANCE CRITERIA• Key check should pass successfully

ACTION TO BE TAKEN


OCT - 2021/Rev 1


53

OK NOT OK

• If the keys are new, generate a TPK for keyassignment and share it to TEKline to get ASC orgenerate ASC using automated blue signature andexecute ASC• After executing ASC, turn off ignition for 2 minutes• After 2 minutes turn ignition ON and make surepreviously set check lamps are cleared in cluster• And crank the engine to start the vehicle, if thevehicle didn't start on first attempt, reset theignition again and try cranking again

• If the key check didn't pass, note theerror appeared during key check• And Contact TEKliner for furtherassistance


OCT - 2021/Rev 1


13.7 B2F44–00 — NO ECM CHALLENGE (EMS ECU NODE ABSENT)

13.7.1 EMS ECU NODE ABSENT

EMS ECU is not in CAN when the ignition is turned ON


- - B2F44–00 No ECM challenge

- - B2F45–00 Authenticationfailed/timeout


NORMAL OPERATION• Ignition ON• After successful security authentication, vehiclestarts normallyDTC DETECTING CONDITIONS• This combination is registered when the EMS ECU isnot connecting or not in CANDTC REACTIONS• Cluster will not wake up• Starter will not engageHEALING CONDITION• Ignition OFF/ON• Fault not present

• EMS ECU not communicating• EMS ECU internal failure


STEP 1 – CHECK EMS ECU CONNECTIVITY


TEST PROCEDURE• Connect i—SMART diagnostic tool to the vehicle OBD port and check whether EMS ECUis connecting


OCT - 2021/Rev 1


55

ACCEPTANCE CRITERIA• EMS ECU should be connecting and read ECU tab should be able to access

ACTION TO BE TAKEN

OK NOT OK

• Connect i-SMARTand try to clear all DTC’s• If the DTC’s not getting cleared, contact TEKlinerfor further assistance• If the DTC’s got cleared. Turn OFF the ignition,wait for 2 minutes. Turn ON ignition & Checkwhether the issue is resolved

• Check CAN circuit• Check EMS ECU power supply andground circuit• If the issue still present, ContactTEKliner for further assistance


OCT - 2021/Rev 1


13.8 B2F4C–00 — CHECKSUM MISMATCH

13.8.1 EMS ECU AND IMMO ID

During every ignition cycle, EMS ECU ID's and ICU ID's are checked for mismatch



B2FFF—00 B2F4C-00 Checksummismatch

Immobilizer NoResponse

B2FF9—00 - -


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the signal fromthe EMS ECU is not has expected by the UICUDTC REACTIONS• Immobilizer check lamp: OFF• Engine check lamp: Blinks• Vehicle will startHEALING CONDITION• Ignition OFF/ON• Fault not present

• Disturbance in CAN circuit• EMS ECU and UICU is out ofsync• UICU or EMS ECU Softwarecorrupted


This DTC may found in UICU in healed state most of the time,please look for any other DTC present in UICU. Follow the diagnostic procedure forthose DTC’s first and then proceed to below diagnostic procedure.


OCT - 2021/Rev 1


57





ACTION TO BE TAKEN

OK NOT OK






ACTION TO BE TAKEN

OK NOT OK







OCT - 2021/Rev 1


ACTION TO BE TAKEN

OK NOT OK


• Replace or repair the wiring harness


OCT - 2021/Rev 1


59

13.9 B2F49–00 — NO ECM ACKNOWLEDGEMENT

13.9.1 SECURITY COMPONENTS




B2FFF—00 B2F49–00 No ECMacknowledgement

Signature 2mismatch

B2FF6—00 B2F45–00 Authentication failed/time out


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when there is Noacknowledgement received from the EMS ECU for theUICU response over EMS ECU challengeDTC REACTIONS• Immobilizer check lamp: OFF• Engine check lamp: BLINKS• Starter will engage, but vehicle will not startHEALING CONDITION• Ignition OFF/ON• Fault not present

• Disturbance in CAN circuit• UICU Faulty• Mode Flashing interrupted


OCT - 2021/Rev 1







ACTION TO BE TAKEN

OK NOT OK




OCT - 2021/Rev 1


61

13.10 B2F4A–00 — NEGATIVE ACKNOWLEDGEMENT

13.10.1 NEGATIVE ACKNOWLEDGEMENT TO EMS ECU



ImmobilizerAuthentication Failed

B2FFF—00 B2F4A—00 Negativeacknowledgement

— — B2F45—00 Authenticationfailed/time out


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when theacknowledgement received from the EMS ECU toUICU during authentication is not as expectedDTC REACTIONS• Immobilizer check lamp: OFF• Engine check lamp: BLINKS• Starter will engage, but vehicle will not startHEALING CONDITION• Ignition OFF/ON• Fault not present

• Disturbance in CAN circuit• Disturbance in power and groundwire of EMS ECU• Disturbance in power and groundUICU


OCT - 2021/Rev 1







ACTION TO BE TAKEN

OK NOT OK






ACTION TO BE TAKEN

OK NOT OK






OCT - 2021/Rev 1


63


ACTION TO BE TAKEN

OK NOT OK




OCT - 2021/Rev 1


13.11 B2F47–00 — IMMOBILIZER ID NOT PROGRAMMED

13.11.1 EMS and IMMO ID

EMS ECU and UICU ID’s are checked for any mismatch during every ignition cycle



B2FFF—00 B2F47–00 Immobilizer ID notprogrammed

— — B2F43–00 TXP ID table empty

— — B2F42–00 Wrong TXP



NORMAL OPERATION• Turn Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the signal fromEMS ECU is not matching with UICU. UICU IMMO IDfield is blank.DTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp BLINKS• Starter will not engageHEALING CONDITION• Program UICU

• UICU is not programmed


OCT - 2021/Rev 1


65


STEP 1 – PERFORM UICU PROGRAMMING


TEST PROCEDURE• Connect i-SECURE dealer tool and perform UICU assignmentAlways use i-SECURE + V4.0.7 and above for any security components ECUprogramming in “XUV 7OO”

ACCEPTANCE CRITERIA• UICU assignment TPK should be generated

ACTION TO BE TAKEN

OK NOT OK

• Share the UICU assignment TPK to TEKliner or Useautomated BS to generate ASC code• Execute the ASC code, after ignition reset vehicleshould start with available keys



OCT - 2021/Rev 1


13.12 B2F4F–00 — ICU EMS ID NOT PROGRAMMED/INVALID

13.12.1 EMS AND IMMO ID’s



Authentication failed B2FFF—00 B2F4F-00 EMS ECU ID notprogrammed/Invalid

— — B2F44–00 No ECM Challenge



NORMAL OPERATION• Turn Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the signal fromEMS ECU is not matching with UICU. EMS ID field inUICU is blank.DTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp: BLINKS• Starter will not engageHEALING CONDITION• Program UICU



OCT - 2021/Rev 1


67




TEST PROCEDURE• Connect i-SECURE dealer tool and perform UICU assignmentAlways use i-SECURE + V4.0.7 and above for any security components ECUprogramming in “XUV 700”


ACTION TO BE TAKEN

OK NOT OK

• Share the UICU assignment TPK to TEKliner orUse automated BS to generate ASC code• Execute the ASC code, after ignition reset vehicleshould start with available keys



OCT - 2021/Rev 1


13.13 B2F47/4F/43/50–00 — UICU BLANK

13.13.1 EMS AND IMMO ID’s



ImmobilizerAuthentication Failed

B2FFF—00 B2F47–00 Immobilizer ID notprogrammed / Invalid

- - B2F4F-00 EMS ECU ID notprogrammed/Invalid

- - B2F43–00 TXP ID table empty

- - B2F42–00 Wrong TXP

- - B2F45–00 Authentication failed/time out

- - B2F50–00 SK not Programmed/INVALID

- - B2F4E–00 Tag Feature CodingNot Done

- - U1517–00 Immo variant codeerror


OCT - 2021/Rev 1


69


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the signal fromEMS ECU is not matching with UICU. UICU is blank.DTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp: BLINKS• Starter will not engageHEALING CONDITION• Program UICU






ACCEPTANCE CRITERIA• UICU assignment TPK should get generated

ACTION TO BE TAKEN

OK NOT OK

• Share the UICU assignment TPK to TEKliner orUse automated BS to generate ASC code• Execute the ASC code, after ignition reset vehicleshould start with available keys



OCT - 2021/Rev 1


13.14 B2F50–00 — SK NOT PROGRAMMED/INVALID




Immobilizerauthentication error P1832–00

B2F50–00 SK notProgrammed/INVALID

– – B2F42–00 Wrong TXP

– – B2F45–00 Authenticationfailed/time out


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the signal fromEMS ECU is not matching with UICU. UICU IMMO SKfield is blank.DTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp BLINKS• Starter will not engageHEALING CONDITION• Ignition OFF/ON• Fault not present



OCT - 2021/Rev 1


71






ACTION TO BE TAKEN

OK NOT OK

• Share the UICU assignment TPK to TEKliner or useautomated blue signature to generate ASC• Turn OFF ignition for 2 minutes• After 2 minutes turn ignition ON and make surepreviously set check lamps are cleared• And crank the engine to start the vehicle



OCT - 2021/Rev 1


13.15 B2F4E–00 — TAG FEATURE CODING NOT DONE

13.15.1 FEATURE CODE

Immobilizer ECU (UICU) is mounted in the ignition barrel for this vehicle. TAG feature code isreturn in UICU for it to understand the type of transponder/key being used.


– – B2F4E–00 Tag Feature CodingNot Done


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the signal fromthe key is not understood by the UICUDTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp Blinks• Starter will not engageHEALING CONDITION• Ignition Off/On• Fault not present

• UICU is not programmed• TAG feature code not written inUICU


This DTC normally comes only when the UICU blank, where theTAG feature code field will be empty or when UICU is faulty. So if any of the below DTCexist along with this DTC please follow the diagnostic procedure of those DTCs firstand then get back to this proceed.•


OCT - 2021/Rev 1


73

B2F47–00 Immobilizer ID not programmed / Invalid

B2F4F-00 EMS ECU ID not programmed/Invalid

B2F43–00 TXP ID table empty

B2F42–00 Wrong TXP

B2F50–00 SK not Programmed/INVALID

U1517–00 Immo variant code error

STEP 1 – PERFORM KEY CHECK TOWRITE TAG CODE


TEST PROCEDURE• Connect i-SECURE dealer tool, select the appropriate platform. Select no of keys availableand perform the key check process. Refer Key checking procedureAlways use i-SECURE + V4.0 and above for any security components ECUprogramming in “XUV 7OO”

ACCEPTANCE CRITERIA• Key check should pass successfully

ACTION TO BE TAKEN

OK NOT OK

• Tag code written at the end of key check• Turn OFF ignition for 2 minutes• After 2 minutes turn ignition ON and make surepreviously set check lamps are cleared• And crank the engine to start the vehicle



OCT - 2021/Rev 1


13.16 B2FFE–00 — EMS AUTHENTICATION LOCKED

13.16.1 EMS ECU UNLOCKING

EMS ECU self locks itself, on exceeding maximum number of wrong ignition ON attemptsmade, In this condition EMS ECU had to be unlocked to get EMS ECU back in system


Immobilizerauthentication error

B2FFF—00 B2F44—00 No ECM Challenge

EMS AuthenticationLocked

B2FFE—00 B2F45—00 Authenticationfailed/time out


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the EMS ECU isnot initiating the security authentication. And EMSECU is locked due to exceeding maximum number ofignition ON made under authentication failed condition.DTC REACTIONS• Immobilizer check lamp: OFF• Engine check lamp: BLINKS• Starter will not engageHEALING CONDITION• Unlock EMS ECU

• EMS ECU is locked


EMS ECU will be locked, when ignition is turned ON for more than 20times under authentication failed condition.


OCT - 2021/Rev 1


75

STEP 1 – UNLOCKING THE EMS ECU


TEST PROCEDURE• Connect i-SECURE dealer tool and navigate to EMS ECU unlocking tab and click on“UNLOCK EMS ECU” button. Refer EMS ECU UNLOCK PROCEDURE.Always use i-SECURE + V4.0.7 and above for any security components ECUprogramming in “XUV 7OO”

ACCEPTANCE CRITERIA• After switching OFF the ignition for 2 minutes, turn ON ignition. Vehicle should startnormally

ACTION TO BE TAKEN

OK NOT OK

• Connect i-SMARTand try to clear all DTC’s• If the DTC’s not getting cleared, Contact TEKlinerfor further assistance• If the DTC’s got cleared. Turn OFF ignition, wait for2 minutes. Turn ON ignition & Check whether theissue is resolved



OCT - 2021/Rev 1


13.17 B2F4D-00 — ANTENNA COIL BREAKAGE




Immobilizerauthentication error

B2FFF—00 B2F4D—00 Antenna coilbreakage

— — B2F40—00 Missingtransponder/ Noresponse

— — B2F44—00 No ECM Challenge

— — B2F45—00 Authenticationfailed/time out


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the immobilizerdoesn't sense the presence of immo antenna coilDTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp: BLINKS• Starter will not engageHEALING CONDITION• Ignition OFF/ON• Fault not present

• UICU is faulty• UICU internal failure• UICU antenna coil breakage


OCT - 2021/Rev 1


77


STEP 1 – REPLACE UICU AND PERFORM UICU PROGRAMMING

PRE CONDITION• Replace UICU to new one• Turn ON ignition



ACTION TO BE TAKEN

OK NOT OK

• Share the UICU assignment TPK to TEKliner or useauto BS to generate ASC and complete the UICUassignment



OCT - 2021/Rev 1


13.18 U2817–00 — IMMO FEATURE CODE ERROR/ILLUMINATION RING

13.18.1 IMMOBILIZER RING

Immobilizer will have immo coil which is soldered to the immobilizer main PCB. Immoilluminating ring represents the immo coil area.


- -U2817–00 Illumination ring

Feature Coding NotDone


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the immobilizerring doesn't get energizedDTC REACTIONS• Immobilizer check lamp: OFF• Engine check lamp: OFF• Starter will engage & vehicle will startHEALING CONDITION• Ignition OFF/ON• Fault not present

• UICU is not flashed


OCT - 2021/Rev 1


79


STEP 1 – PERFORM UICU FLASHING


TEST PROCEDURE• Connect i-FLASH dealer tool and flash the UICU to write the calibration parameters inUICU

ACCEPTANCE CRITERIA• UICU flashing should complete successfully

ACTION TO BE TAKEN

OK NOT OK

• Immobilizer illumination ring functions normally • Contact TEKliner for furtherassistance


OCT - 2021/Rev 1


13.19 U1517–00 — IMMO VARIANT CODE ERROR

13.19.1 VARIANT CODE

In universal immobilizer IMMO variant code is written through i-FLASH for vehicle compatibility


- - U1517–00 Immo variant codeerror


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when UICU is notflashed using i-FLASHDTC REACTIONS• Engine check lamp: OFF• Immobilizer check lamp: OFF• Starter will engage and vehicle startsHEALING CONDITION• Perform UICU flashing

• UICU is not flashed


OCT - 2021/Rev 1


81


STEP 1 – VARIANT CODE NOT WRITTEN IN UICU


TEST PROCEDURE• Connect i-FLASH flashing tool and flash UICU

ACCEPTANCE CRITERIA• After flashing, error code should self heal

ACTION TO BE TAKEN

OK NOT OK

• Clear the DTC and verify • Contact TEKliner for furtherassistance


OCT - 2021/Rev 1


13.20 U1217–00 — IMMO BUS OFF ERROR

13.20.1 BUS OFF

Immobilizer ECU receives messages from other ECU’s through the CAN BUS. IMMO BUSOFF error arises when immobilizer is unable to receive or transmit messages through the CANBUS.


- - U1217–00 Immo bus off error


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the UICU is notgetting the signal from EMS ECU as expected duringignition ONDTC REACTIONS• Immobilizer check lamp: OFF• Engine check lamp: OFF• Starter will engage and vehicle will startHEALING CONDITION• Ignition off\on• Fault not present

• IP Wiring harness intermittentconnectivity issue• UICU BUS OFF


OCT - 2021/Rev 1


83


This DTC normally appears in the UICU in healed state, Check forintermittent ECUs connectivity issue in CAN.





ACTION TO BE TAKEN

OK NOT OK




OCT - 2021/Rev 1


13.21 U1317–00 — VIN MISMATCH IN IMMO

13.21.1 VIN IN EMS ECU AND UICU

Dealer tool reads VIN from EMS ECU as the first step to initiate the assignment processbefore unlocking the EMS ECU


- - U1317-00 VIN mismatch inimmo


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when the VIN numberin the EMS ECU and UICU is not matching.DTC REACTIONS• Immobilizer check lamp: OFF• Engine check lamp: OFF• Starter will engageHEALING CONDITION• Ignition OFF\ON• Fault not present

• UICU does not belongs to thevehicle• Wrong VIN wrote in EMS ECUafter new EMS ECU replacement


OCT - 2021/Rev 1


85


• Check whether the VIN in EMS ECU and UICU is matching VIN plate• Check whether the DTC occurred post replacement of new EMS ECU & Flashing

STEP 1 – VIN MISMATCH BETWEEN EMS ECU AND UICU


TEST PROCEDURE• Connect i-SMART diagnostic tool and check VIN in EMS ECU and UICU

ACCEPTANCE CRITERIA• VIN in EMS ECU and UICU must be matching

ACTION TO BE TAKEN

OK NOT OK

• Connect i-SMARTand try to clear all DTC’s• If the DTC’s not getting cleared, Contact TEKlinerfor further assistance• If the DTC’s got cleared. Turn OFF ignition, wait for2 minutes. Turn ON ignition & Check whether theissue is resolved

• Contact TEKline for furtherassistance


OCT - 2021/Rev 1


13.22 U1117–00 — NO ICU RESPONSE/ICU NODE ABSENT

13.22.1 UICU NODE ABSENT

UICU node absent denotes, UICU nodes is not connected in CAN. During securityauthentication, UICU is not responding to the other ECU’s in CAN


Immobilizerauthentication failed

B2FFF–00 - -

Immobilizer noresponse

B2FF9–00 - -

Immobilizer nodeabsent

U1117–00 - -


NORMAL OPERATION• Ignition ON• After successful security authentication, vehicle startsnormallyDTC DETECTING CONDITIONS• This combination is registered when there is nosignal received from the UICU, during authenticationDTC REACTIONS• Immobilizer check lamp: ON• Engine check lamp: BLINKS• Starter will engageHEALING CONDITION• Ignition OFF/ON• Fault not present

• UICU is not connected• UICU is not getting powered• Defective UICU• Disturbance in CAN circuit orwiring harness intermittentconnectivity issue


OCT - 2021/Rev 1


87






ACTION TO BE TAKEN

OK NOT OK

• Check whether the UICU is detecting in i-SMARTdiagnostic tool• If UICU is not detecting, replace UICU with newone and perform UICU assignment



OCT - 2021/Rev 1


14 EMS ECU CHECKINGPROCEDURE


OCT - 2021/Rev 1


89

14.1 EMS ECU POWER SUPPLYAND GROUND WIRE CHECKING

14.1.1 EMS ECU CIRCUIT SCHEMATIC

C 5

32K

1819

16

C 7

2_F

A9

EC-S

P023

EC-S

P022

C 7

2_H

B1

G 2

P 1

1

C 7

2_A

3

C 7

2_E

A9

C 5

32K

80 11 11

C 4

59 F

C 4

59 M

C 405 M 4

G 1

C 4

72 F

40C

472

M40

C 405 F 4

C 1

4459

126

113

P 2

C 1

4465

C 1

4466

F27

10A

F35

10A

INTE

RN

ALG

ND

R9-

IGN

REL

AY

IP FUSE

BOX

ENG

INE

CO

MP

FUSE

BOX

F42

60A

ENG

INE

CO

MP

FUSE

BOX

EMS

ECU

DIE

SEL

BATT

SIG

IGN

CR

ANK

F20

40A

F6 5A

F46

5AIP-143G/R

IP-143-BG/R

EC-143-DIG/R

EC-4432-C-DIR

EC-1

4432

-DI

R

IP-7797R

BN-1001B

IP-1

518

R/W

EC-1518R/W

EC-1

65-D

IR

BP-1

00R

EC-4432-A-DIR/L

EC-1

60-D

IR

/Y

BATTERY

C 1

4413

6

C 1

4413

7

ENG

CO

MP

FUSE

BOX

F1 15A

EC-162-A-DIR/G

EC-162-B-DIR/G

EC-1819-DIR/Y

158

C 1

44

C 1

44

157

160

161

R14

-EM

S EC

UM

AIN

REL

AY

ENG

CO

MP

FUSE

BO

X

EC-S

P017

-DI

EC-C

SP00

1EC

-CSP

002

EC-S

P010

EC-163-DIR

3M

AIN

RLY

PWR

2M

AIN

RLY

PWR

3

EC-1819-A-DIR/Y

139

138F2 10A

EC-161-DIR/L 1

MAI

N R

LYPW

R 1

5

EC-1819-B-DIR/Y

EC-162-DIR/G

EC-165-B-DIR

EC-165-A-DIR

C 7

2_I

A10

C 7

2_I

A9

IP FUSE

BOX

F50

5A

G 5

1EC-S

P015

24

6G

ND

1G

ND

2G

ND

3

EC-915-A-DIB

EC-915-B-DIB

BEC-915-C-DI

EC-915-DIB

77

POW

ERTR

AIN

CAN

60C

AN H

IGH

CAN

LO

W

EC-1501Y

EC-1502G

IP-145-ABR

C 1

024

3

C 1

022

5IG

NIT

ION

SWIT

CH

PT

IGN

ITIO

N S

WIT

CH

KEYI

N S

W

KEY

K1K2

STAR

TIG

NB

+AC

C

ACC

STAR

T

INOU

T

ON

LOC

K

IP-1

519

R

IP-1519-AR

IP-1519-BR

IP-S

P044

EC-S

P025

C 4

72 F

C 4

72 M

DIA

GN

OST

ICC

ON

NEC

TOR

55 8C

555

14LI

N IP-4411W

EC-4411-DI-BW

EC-4411-DIW


OCT - 2021/Rev 1


14.1.1.1 CONNECTOR LOCATION

14.1.1.2 CONNECTOR VIEWS AND INFORMATION

CONNEC-TOR NO

CONNECTORDESCRIPTION PIN NO FUNCTION

C 532 EMS ECU60 CAN LOW

77 CAN HIGH

EMS ECU DIESEL K

W2L07C028_C 532

C 532K

C 532K - BLACK

W2L07F028_C 532K

5

3

1

6

4

2

7891011121314151617181920212223

31 30 29 28 27 26 25 24323334353637383940

48 47 46 45 44 43 42 41495051525354555657

65 64 63 62 61 60 59 58666768697071727374

82 81 80 79 78 77 76 75838485868788899091


OCT - 2021/Rev 1


91

CONNEC-TOR NO


18 PERMANENT BATTERY SUPPLY

1 BATTERY SUPPLY 1

3 BATTERY SUPPLY 2

5 BATTERY SUPPLY 3

16 IGNITION

4 BATTERY GROUND 2

6 BATTERY GROUND 3

2 BATTERY GROUND 1

14.1.1.3 DIAGNOSTIC PROCEDURE

STEP 1 – CHECK THE FUSES

PRE CONDITION• Ignition OFF

TEST PROCEDURE• Check the condition of fuse F42, F6, F20, F27, F35, F46, F1, F2 & F50

ACCEPTANCE CRITERIA• Are all the fuses are OK

ACTION TO BE TAKEN

OK NOT OK

• GO TO STEP 2 • Replace the blown fuse

STEP 2 – CHECK THE BATTERY VOLTAGE

PRE CONDITION• Ignition OFF• Remove the EMS ECU main relay• Ignition ON

TEST PROCEDURE• Check the battery voltage at pin 157 and pin 158 of C 144 (EMS ECU main relay)

ACCEPTANCE CRITERIA


OCT - 2021/Rev 1


• Battery voltage is 12V

ACTION TO BE TAKEN

OK NOT OK

• Go to step 3• Check the wiring harness for any open orshort circuit and replace or repair the wiringharness

STEP 3 – CHECK THE BATTERY VOLTAGE AT EMS ECU

PRE CONDITION• Ignition OFF• Remove the EMS ECU connector C 532K• Ignition ON

TEST PROCEDURE• Check the battery voltage at pin number 1 of C 532K• Check the battery voltage at pin number 3 of C 532K• Check the battery voltage at pin number 5 of C 532K

ACCEPTANCE CRITERIA• Is the battery voltage is 12V

ACTION TO BE TAKEN

OK NOT OK


STEP 4 – CHECK THE EMS ECU MAIN RELAY CONTROL SIDE LINE

PRE CONDITION• Ignition OFF• EMS ECU main relay• Remove the EMS ECU connector C 532K

TEST PROCEDURE• Check for resistance between pin 161 of C 144 (EMS ECU main relay) and pin number 19of C 532K


OCT - 2021/Rev 1


93

ACCEPTANCE CRITERIA• Is the resistance value is <1Ω

ACTION TO BE TAKEN

OK NOT OK


STEP 5 – CHECK THE EMS ECU GROUND WIRES

PRE CONDITION• Ignition OFF• Remove the EMS ECU connector C 532• Remove the G 5 ground terminal

TEST PROCEDURE• Check the resistance between pin number 4 of C 532K and G 5• Check the resistance between pin number 6 of C 532K and G 5• Check the resistance between pin number 2 of C 532K and G 5


ACTION TO BE TAKEN

OK NOT OK


STEP 6 – CHECK THE EMS ECU SUPPLY WIRES

PRE CONDITION• Ignition OFF• Remove the EMS ECU main relay• Remove the EMS ECU connector C 532K• Remove the Ignition Switch connector C 102

TEST PROCEDURE


OCT - 2021/Rev 1


• Check the resistance between pin 160 of C 144 (EMS ECU main relay) and pin number 1of C 532K• Check the resistance between pin 160 of C 144 (EMS ECU main relay) and pin number 3of C 532K• Check the resistance between pin 160 of C 144 (EMS ECU main relay) and pin number 5of C 532K• Check the resistance between B1 of C 72_H and pin number 16 of C 532K


ACTION TO BE TAKEN

OK NOT OK

• Contact TEKline for further assistance• Check the wiring harness for any open orshort circuit and replace or repair the wiringharness


OCT - 2021/Rev 1


95

15 UICU CHECKINGPROCEDURE


OCT - 2021/Rev 1


15.1 UICU POWER SUPPLYAND GROUND WIRE CHECKINGPROCEDURE

15.1.1 UICU CIRCUIT SCHEMATIC

POWERTRAIN CAN

C 72_G B3 C 72_HA7C 72_EA9

G 25 1

IP-SP009

4

IP-C

SP03

6

IP-C

SP03

5

C 72_A1

C 405 F

C 14460 59

C 405 M 2 4

2 4

P 2

1

3

C 1161 62 3

F19

10A

ENGCOMPFUSEBOX

F43

60A

F42

60A

F41

5AINTERNAL

GND

R9-IGNRELAY

IP FUSE BOX

IMMOBILIZER

CAN LOW CAN HIGHBATT IGNGND

IP-1

36R

/Y

IP-9

30 BIP

-930

-AB

IP-1

502-

PU

G

IP-1

501-

PU

Y

IP-1

521

R/G

IP-1

45-A

BR

IP-1

518

R/W

EC-1

521

R/G

EC-1

518

R/W

IP-1

49A

R/G

C 72_F A9

F27

10A

IP-SP044

C 102 4

C 1022

IGNITIONSWITCH

PT IGNITION SWITCH KEYIN SW

KEY K1 K2STARTIGNB + ACC

ACC

START

IN

OUT

ON

LOCK

IP-1519R

IP-1

519-

AR

5

IP-1

519-

BR

G 1 1

G 2 1

P 1 1

BATT

ERY

BN-1

001

BBP

-100

R


OCT - 2021/Rev 1


97

15.1.1.1 CONNECTOR LOCATION

15.1.1.2 CONNECTOR VIEWS AND INFORMATION

CONNECTORNO


C 116 IMMOBILIZER6 IGN SUPPLY

1 BATTERY SUPPLY

IMMOBILIZER

W2L15C021_C 116

C 116

C 116 - GREEN

W2L15F021_C 116

1 2 3 4 5 6 7


OCT - 2021/Rev 1


CONNECTORNO


3 CAN HI

2 CAN LOW

4 GROUND


STEP 1 – CHECK THE FUSES

PRE CONDITION• Ignition OFF

TEST PROCEDURE• Check the condition of fuse F19, F27, F41, F42 & F43

ACCEPTANCE CRITERIA• Are all the fuses are OK

ACTION TO BE TAKEN

OK NOT OK

• GO TO STEP 2 • Replace the blown fuse

STEP 2 – CHECK THE BATTERY VOLTAGE IN UICU SUPPLY WIRE

PRE CONDITION• Ignition OFF• Remove the UICU connector C 116• Ignition ON

TEST PROCEDURE• Check the battery voltage at pin number 1 of C 116


ACTION TO BE TAKEN


OCT - 2021/Rev 1


99

OK NOT OK


STEP 3 – CHECK THE BATTERY VOLTAGE IN IGNITION INPUT WIRE

PRE CONDITION• Ignition OFF• Remove the UICU connector C 116• Ignition ON

TEST PROCEDURE• Check the battery voltage at pin number 6 of C 116


ACTION TO BE TAKEN

OK NOT OK


STEP 4 – CHECK THE UICU GROUNDWIRE

PRE CONDITION• Ignition OFF• Remove the UICU connector C 116• Remove the ground terminal G 25

TEST PROCEDURE• Check for resistance between pin number 4 of C 116 and G 25 ground point wire end


ACTION TO BE TAKEN


OCT - 2021/Rev 1


OK NOT OK

• Contact TEKline for further assistance• Check the wiring harness for any open orshort circuit and replace or repair the wiringharness


OCT - 2021/Rev 1


101

16 CAN CIRCUIT CHECKING


OCT - 2021/Rev 1


16.1 CAN CIRCUIT CHECKING PROCEDURE

16.1.1 CAN CIRCUIT SCHEMATICC 579

1426

C 5

32K

7760

EC-CSP002

EC-CSP001

IP-C

SP03

5

IP-C

SP03

6

C 4

59 M

C 4

59 F

2613

2613

IP-CSP018

IP-CSP017

C 1163 2

ABS EHCU

CAN LOWCAN HIGH

EMS

ECU

DIE

SEL

CAN

LO

WC

AN H

IGH

CAN LOWCAN HIGH

IMMOBILIZER

IP-1501-PMY

IP-1502-PPG

IP-1

502-

PUG

EC-1501-PDY

EC-1502-PDG

IP-1

502-

PGG

IP-1501-PAY

IP-1502-PAG

IP-1501-PDY

IP-1502-PDG

IP-1501-PHY

IP-1502-PHG

EC-1

502-

PB

G

EC-1

501-

PB

Y

EC-1501Y

EC-1502G

IP-1

501-

PUY

IP-1501-PPY

IP-1502-PMG

IP-1

501-

PGY

IP-1

502-

PEG

IP-1

501-

PEY

C 1

087

8

EPS

ECU

CAN

LO

WC

AN H

IGH

C 117 F65

C 117 M

C 821

65

3231

ETC ECU

CAN LOWCAN HIGH

IP-1

502-

PC

G

IP-1

501-

PC

Y

BR/B

Y/B

C 5556 14

DIAGNOSTICCONNECTOR

CAN LOWCAN HIGH

IP-1

502-

PNG

IP-1

501-

PNY

C 6088 7

IP-C

SP00

6

IP-C

SP00

5

IP-C

SP01

6

IP-C

SP01

5

IP-C

SP01

2

IP-C

SP01

1

IP-C

SP00

2

IP-CSP014

IP-CSP013

IP-C

SP00

1

MBFM

CAN LOWCAN HIGH

IP-1

501-

PL_1

Y

IP-1

502-

PL_1

G

IP-1

501-

PKY

IP-1

502-

PKG

IP-1

501-

PIY

IP-1

502-

PIG

C 1912930

AIRBAG ECU

CAN HIGH CAN LOW

IP-1501-PJY

IP-1502-PJG

C 6

2730

10

SILV

ER B

OX

CAN

LO

WC

AN H

IGH

G

IP-C

SP05

2

C 1111 2

TERMINATING RESISTORPOWERTRAIN CAN

CAN LOW GNDCAN HIGH

IP-1

502-

PVG

IP-9

34-J

BIP

-934 B

IP-1

501-

PVY

3

G 25

120

120


OCT - 2021/Rev 1


103

16.1.1.1 CONNECTOR LOCATIONEMS ECU DIESEL K

W2L07C028_C 532

C 532K

DIAGNOSTIC CONNECTOR

W2L15C059_C 555

C 555


OCT - 2021/Rev 1


IMMOBILIZER

W2L15C021_C 116

C 116

TERMINATING RESISTOR - POWERTRAIN CAN (MX)

W2L15C019_C 111

C 111


OCT - 2021/Rev 1


105

16.1.1.1.2 CONNECTOR VIEWAND INFORMATION

CONNECTORNO


C 555 DIAGNOSTICCONNECTOR

14 CAN— LOW

6 CAN— HIGH

C 532K EMS ECU77 CAN— HIGH

60 CAN— LOW

C 116 IMMOBILIZER3 CAN— HIGH

2 CAN— LOW

C 111 TERMINATING RESISTOR1 CAN— HIGH

2 CAN— LOW


STEP 1 – CHECK FOR SHORT CIRCUIT BETWEEN CAN HIGH AND CAN LOW

PRE CONDITION• Ignition OFF• Battery terminal disconnected

TEST PROCEDURE• Measure the resistance between pin 14 and pin 6 of the DLC connector (C 555)

C 532K - BLACK

W2L07F028_C 532K

5

3

1

6

4

2

7891011121314151617181920212223

31 30 29 28 27 26 25 24323334353637383940

48 47 46 45 44 43 42 41495051525354555657

65 64 63 62 61 60 59 58666768697071727374

82 81 80 79 78 77 76 75838485868788899091

C 555 - BLACK

W2L15F059_C 555

12345678

910111213141516

C 116 - GREEN

W2L15F021_C 116

1 2 3 4 5 6 7

C 111 - BLACK

W2L15F019_C 111

1

2

5 4 3


OCT - 2021/Rev 1


ACCEPTANCE CRITERIA• Resistance = 60±10 Ω

ACTION TO BE TAKEN

OK NOT OK

• GO TO STEP 6 • GO TO STEP 2

STEP 2 – CHECK CONNECTIVITY BETWEEN CAN HIGH AND CAN LOW AT DLCCONNECTOR

PRE CONDITION• Ignition OFF• Disconnect all the ECUs and terminating resistor from the CAN network

TEST PROCEDURE• Measure the resistance between pin 14 and pin 6 of the DLC connector

ACCEPTANCE CRITERIA• Resistance = ∞ Ω

ACTION TO BE TAKEN

OK NOT OK

GO TO STEP 3• Suspect CAN wires short• Identify and replace the faulty wiringharness

STEP 3 – CHECK FOR INTERNAL SHORT IN TERMINATING RESISTOR

PRE CONDITION• Ignition OFF• Connect only the terminating resistor C111 and disconnect all the other ECU’s from CAN



ACTION TO BE TAKEN


OCT - 2021/Rev 1


107

OK NOT OK

• GO TO STEP 4

• Suspect internal short/open in terminalresistor• Replace the terminal resistor with a newone• Check and confirm that ECUs are able tocommunicate with i-SMART• Clear the DTC and verify

STEP 4 – CHECK INTERNAL SHORT CIRCUIT IN CAN LOW AND CAN HIGH OF EMSECU

PRE CONDITION• Ignition OFF• Battery terminals DISCONNECTED• EMS ECU only connected with the CAN (All other ECUs and Terminating resistordisconnected)



ACTION TO BE TAKEN

OK NOT OK

• GO TO STEP 5

• Suspect internal short in EMS ECU• Replace the EMS ECU with a new one• Check and confirm that ECUs are able tocommunicate with i-SMART• Clear the DTC and verify

STEP 5 — CHECK INTERNAL SHORT CIRCUIT IN CAN LOW AND CAN HIGH OFIMMOBILIZER

PRE CONDITION• Ignition OFF• Battery terminals DISCONNECTED• EMS ECU, Terminating resistor & Immobilizer only CONNECTED with CAN

TEST PROCEDURE


OCT - 2021/Rev 1


• Measure the resistance between pin 14 and pin 6 of the DLC connector (C 555)


ACTION TO BE TAKEN

OK NOT OK

• GO TO STEP 6

• Suspect internal short in immobilizer• Replace the immobilizer with a new one• Check and confirm that ECUs are able tocommunicate with i-SMART• Clear the DTC and verify

STEP 6— CHECK CAN HIGH & LOWWIRES FOR SHORT CIRCUIT TO GROUND

PRE CONDITION• Ignition OFF• Battery negative and positive terminals DISCONNECTED• All ECUs and terminating resistor connected with CAN

TEST PROCEDURE• Measure the resistance between pin 14 of DLC connector (C 555) and disconnectedbattery negative terminal• Measure the resistance between pin 6 of DLC connector (C 555) and disconnected batterynegative terminal

ACCEPTANCE CRITERIA• Resistance = ∞ Ω

ACTION TO BE TAKEN


OCT - 2021/Rev 1


109

OK NOT OK

• GO TO STEP 7

• Suspect CAN wires/ ECU’s internally shortcircuit with ground• Remove ECUs in CAN network one by oneand identify the ECU having internal shortto battery ground• If the ECUs are OK, identify the harnesswhich is having internal short to battery• Identify and replace the faulty wiringharness/ ECUs• Check and confirm that ECUs are able tocommunicate with i-SMART• Clear the DTC and verify

STEP 7 — CHECK FOR CAN HIGH & LOW CIRCUIT SHORT TO BATTERY POSITIVE

PRE CONDITION• Ignition ON

TEST PROCEDURE• Measure the voltage between pin 14 of DLC connector (C 555) and battery ground• Measure the voltage between pin 6 of DLC connector (C 555) and battery ground

CRITERIA• Voltage = Battery voltage

ACTION TO BE TAKEN

OK NOT OK

• Suspect CAN wires/ ECUs internally shortcircuit to battery supply• Remove ECUs in CAN network one by oneand identify the ECU having internal shortto battery supply• If the ECUs are OK, identify the harnesswhich is having internal short to batterysupply• Identify and replace the faulty wiringharness/ ECUs• Check and confirm that ECUs are able tocommunicate with i-SMART• Clear the DTC and verify

• Clear and Verify the DTC• Check for intermittent issue


OCT - 2021/Rev 1

diagnostic manual

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