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11/8/2017 Information and Message Center - Diagnosis and Testing • 2006 Ford Explorer • MotoLogic

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2006 Explorer

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Principles of OperationInspection and VerificationSymptom ChartPinpoint Tests

SECTION 413-08: Information and Message Center 2006 Explorer/Mountaineer Workshop Manual

DIAGNOSIS AND TESTING Procedure revision date: 10/03/2005

Information And Message Center

Refer to Wiring Diagrams Cell 60 for schematic and connector information.

Special Tool(s)

73III Automotive Meter 105-R0057 or equivalent

Worldwide Diagnostic System (WDS)

Vehicle Communication Module (VCM) with appropriate adapters, or equivalent diagnostic tool

Flex Probe Kit 105-R025B or equivalent

Principles of Operation

The message center electronic functions use both hardwired inputs and the controller area network (CAN) totransmit and receive information. It is very important to understand:

where the input (command) originates.all the information (messages) necessary in order for a feature to operate.which module(s) receive(s) the input or command message.

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if the module which received the input (message) controls the output of the feature, or if it outputs amessage over the CAN circuit to another module.which module controls the output of the feature.

The message center provides the following features:

information displayssetup displayssystem check messageswarning messages

The message center information can be selected through the TRIP/RESET button (base cluster) and by theINFO, SETUP, and RESET buttons (high series cluster).

Information Displays (Base Instrument Cluster)

The information displays are non-timed modes. The selected mode remains on until the driver presses amessage center switch to change the mode, or until it is overridden by another mode. The information displaymodes are:

odometer/trip odometer, compass headingsdistance to emptyaverage fuel economysetup menu

Information Displays (High Series Instrument Cluster)

The information displays are non-timed modes. The selected mode remains on until the driver presses amessage center switch to change the mode, or until it is overridden by another mode. The information displaymodes are:

odometer/trip odometer, compass headings, outside air temperature display (with dual electronicautomatic temperature control)distance to emptyaverage fuel economyinstantaneous fuel economyfuel usedtrip elapsed drive timeblank

Setup Displays (Base Instrument Cluster)

The setup displays are timed modes and terminate after a finite interval. Press the TRIP/RESET button to scrollthrough the SETUP MENU display sequence. If the TRIP/RESET button is not pressed within 4 seconds, the



message center returns to the INFO MENU. The setup display modes are:

AWD lock (vehicles equipped with AdvanceTrac® with roll stability control [RSC] only)system checkunits (English/metric)languageautolampautolockautounlockpark aidoil life start value

Setup Displays (High Series Instrument Cluster)

The setup displays are timed modes and terminate after a finite interval. Press the SETUP button for thefollowing displays:

AWD lock (vehicles equipped with AdvanceTrac® with roll stability control [RSC] onlysystem checkunits (English/metric)languageautolampautolockautounlockrunning boards (if equipped)easy entry/exit seatpark aidcompass zonecompass calibrationoil life start value

System Check Displays

Selecting this function from the SETUP MENU causes the message center to cycle through each of the systemsbeing monitored. For each of the monitored systems, the message center indicates either an OK message or awarning message for 2 seconds. For base instrument clusters, the TRIP/RESET button must be held down afterpressing the TRIP/RESET button to cycle the messages through each of the systems being monitored. For highseries instrument clusters, pressing the RESET control switch cycles the message center through each of thesystems being monitored. The system check report is as follows:

OIL LIFE RESETCHARGING SYSTEM



WASHER FLUIDDOOR AJAREXTERIOR LAMPSBRAKE FLUID LEVELPARK BRAKEFUEL LEVEL

System Warnings

The system warnings alert the operator to possible problems or malfunctions in the vehicle operating systems.The message center displays the last selected feature if there are no more warning messages. This allows theoperator full functionality of the message center after acknowledgement of the warning message by pressing theRESET button and clearing the message. The warning messages are divided into 4 categories:

They cannot be cleared until the condition is corrected.They reappear on the display 10 minutes from the reset if the condition has not been corrected.They do not reappear until an ignition OFF-ON cycle has been completed.They reappear if the condition clears then reoccurs within the same ignition cycle ON-OFF cycle.

The warning display that cannot be reset is:

DOOR AJAR

The warning messages that reoccur after 10 minutes are:

CHECK CHARGING SYSTEMFUEL LEVEL LOWPARK BRAKE ENGAGEDCHECK BRAKE SYSTEM

The warning messages that display whenever the ignition switch is turned from the OFF position to the ONposition are:

CHECK PARK AIDBRAKE FLUID LEVEL LOWCHECK HEADLAMPCHECK HIGHBEAMCHECK TURN LAMPWASHER FLUID LOW LEVELOIL CHANGE REQUIREDENGINE OIL CHANGE SOON

The warning messages that return after a condition has cleared then reoccurs within the same ignition ON-OFFcycle are:



LIFTGATE/GLASS AJARLOW TIRE PRESSURETIRE MONITOR FAULTTIRE SENSOR FAULTTRAIN TIRESTIRES TRAINEDTIRES NOT TRAINED

Outside Air Temperature Sensor (Base Instrument Cluster without Electronic Automatic TemperatureControl [EATC])

The base instrument cluster receives the outside air temperature data from the outside air temperature sensor.This data is then displayed on the message center. The outside air temperature sensor is located on the radiatorcore support behind the front grill assembly and is fastened with a pin-type retainer. If equipped with a highseries instrument cluster, the outside air temperature data from the outside air temperature sensor is displayed inthe electronic automatic temperature control (EATC) module. Refer to Section 412-00 to continue diagnosis ofthe outside air temperature system.

Compass

The compass heading is displayed as one of N, NE, E, SE, S, SW, W and NW in the message center display.The compass reading may be affected when you drive near large buildings, bridges, power lines and powerfulbroadcast antenna. Magnetic or metallic objects placed in, on or near the vehicle may also affect compassaccuracy. The compass sensor module is mounted behind the interior rear view mirror.

Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Mechanical Electrical

Washer fluid levelFuel levelEngine coolant levelAccessory drive beltEngine oil levelBrake fluid level

Smart junction box (SJB) fuse 18 (10A)Instrument clusterMessage center switchesCircuitry

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Tire pressure

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) beforeproceeding to the next step.

4. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) andselect the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does notcommunicate with the vehicle:

check that the program card is correctly installed.

check the connections to the vehicle.

check the ignition switch position.

5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operatingmanual.

6. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:CAN circuit fault; all electronic control units no response/not equipped, refer to Section 418-00.

No response/not equipped for the instrument cluster, refer to Section 413-01.

System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erasethe continuous DTCs, and carry out the self-test diagnostics for the instrument cluster.

7. If the DTCs retrieved are related to the concern, refer to the Instrument Cluster Diagnostic TroubleCode (DTC) Index to continue diagnosis.

8. If no DTCs related to the concern are retrieved, GO to Symptom Chart.

Instrument Cluster Diagnostic Trouble Code (DTC) Index

DTC Description Source Action

B1255 Air Temperature External Sensor Circuit Open Instrumentcluster

Go To Pinpoint Test E.

B1257 Air Temperature External Sensor Circuit Short toGround

Instrumentcluster


B2097 Compass Module Failure Instrumentcluster

Go To Pinpoint Test B.

U2013 Compass Module — No Response Instrumentcluster


All OtherDTCs

— Instrumentcluster

REFER to Section 419-10.

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Symptom Chart

Symptom Chart

Condition Possible Sources Action

The message center is notoperating correctly (baseinstrument cluster)

Instrumentcluster

OBSERVE the operation of themessage center when pressing theTRIP/RESET button. Does themessage center display changewhen the TRIP/RESET button ispressed?

If the message centerdisplay changes, systemis operating normally atthis time.

If the message centerdisplay does not change,INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

The message center is notoperating correctly (highseries instrument cluster)

Messagecenter switchInstrumentcluster

Go To Pinpoint Test A.

The compass is inoperative FuseCircuitryCompasssensormoduleInstrumentcluster


The compass is inaccurate Zone settingCalibration

Go To Pinpoint Test C.




VehiclemagnetizationCompasssensormodule

The message center displayis blank

Instrumentcluster

CARRY OUT the instrumentcluster self-diagnostic test mode toilluminate all segments of themessage center display. REFER toSection 413-01. If the messagecenter display is illuminated, thesystem is working correctly at thistime.

If the message centerdisplay is inoperative,INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

The message center switchdoes not operate correctly(base instrument cluster)

Instrumentcluster

INSTALL a new instrument cluster.REFER to Section 413-01. TESTthe system for normal operation.

The message center switchdoes not operate correctly(high series instrumentcluster)

CircuitryMessagecenter switchInstrumentcluster

Go To Pinpoint Test D.

The outside air temperaturedisplay does not operatecorrectly (base instrumentcluster without electronicautomatic temperaturecontrol [EATC])

CircuitryAmbient airtemperaturesensorInstrumentcluster


The WASHER FLUID LOWLEVEL warning is incorrect

Circuitry Go To Pinpoint Test F.






Washer fluidreservoirInstrumentcluster

TheDOOR/LIFTGATE/LIFTGATEGLASS AJAR warning isincorrect

CircuitrySmartjunction box(SJB)Instrumentcluster

OBSERVE the operation of thedoor ajar warning indicator.

If the door ajar warningindicator operatescorrectly, INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

If the door ajar warningindicator does notoperate correctly, REFERto Section 413-01 tocontinue diagnosis of thedoor ajar warningindicator.

The CHECK CHARGINGSYSTEM warning is incorrect

CircuitryPowertraincontrolmodule(PCM)Instrumentcluster

OBSERVE the charging systemwarning indicator.

If the charging systemwarning indicatoroperates correctly,INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

If the charging systemwarning indicator doesnot operate correctly,REFER to Section 413-01 to continue diagnosisof the charging systemwarning indicator.

The FUEL LEVEL LOW Circuitry OBSERVE the operation of the







warning is incorrect Fuel pumpgauge senderInstrumentcluster

fuel gauge.If the fuel gauge operatescorrectly, INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

If the fuel gauge does notoperate correctly, REFERto Section 413-01 tocontinue diagnosis of thefuel gauge.

The PARK BRAKEENGAGED warning isincorrect

CircuitryParking brakeswitchSmartJunction Box(SJB)Instrumentcluster

OBSERVE the BRAKE warningindicator.

If the BRAKE warningindicator operatescorrectly, INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

If the BRAKE warningindicator does notoperate correctly, REFERto Section 413-01 tocontinue diagnosis of theBRAKE warningindicator.

The CHECK BRAKESYSTEM warning is incorrect

CircuitryBrake fluidlevel switchParking brakeswitchSmartjunction box(SJB)Anti-lockbrake system(ABS) module

OBSERVE the BRAKE warningindicator.

If the BRAKE warningindicator operatescorrectly, INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

If the BRAKE warningindicator does not








Instrumentcluster

operate correctly, REFERto Section 413-01 tocontinue diagnosis of theBRAKE warningindicator.

The CHECK PARK AIDwarning is incorrect

CircuitryParking aidsensorParking aidmoduleInstrumentcluster

OBSERVE the operation of theparking aid system.

If the parking aid systemoperates correctly,INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

If the parking aid systemdoes not operatecorrectly, REFER toSection 413-13 tocontinue diagnosis of theparking aid system.

The LOW TIRE PRESSURE,TIRE MONITOR FAULT, orTIRE SENSOR FAULTwarning is incorrect

CircuitrySmartjunction box(SJB)Instrumentcluster

OBSERVE the operation of the lowtire pressure warning indicator.

If the low tire pressurewarning indicatoroperates correctly,INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

If the low tire pressurewarning indicator doesnot operate correctly,REFER to Section 413-01 to continue diagnosisof the low tire pressurewarning indicator.

The BRAKE FLUID LEVEL Circuitry OBSERVE the BRAKE warning



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LOW warning is incorrect Brake fluidlevel switchBase brakesystem

indicator.If the BRAKE warningindicator operatescorrectly, INSTALL a newinstrument cluster.REFER to Section 413-01. TEST the system fornormal operation.

If the BRAKE warningindicator does notoperate correctly, REFERto Section 413-01 tocontinue diagnosis of theBRAKE warningindicator.

The CHECK HEADLAMP,CHECK HIGHBEAM, orCHECK TURN LAMPwarning is incorrect

CircuitryExteriorlightingInstrumentcluster

OBSERVE the exterior lightingsystem for correct operation.

If the exterior lightingoperates correctly,INSTALL a new smartjunction box (SJB).REFER to Section 419-10. TEST the system fornormal operation.

If the exterior lightingdoes not operatecorrectly, REFER toSection 417-01 tocontinue diagnosis of theexterior lighting system.

Pinpoint Tests

Pinpoint Test A: The Message Center Is Not Operating Correctly (High Series Instrument Cluster)

Normal Operation

The message center functionality is controlled through the message center switch, which is hardwired to theinstrument cluster through circuits CMC29 (GN/VT) and RMC32 (GN/BU).



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Possible Causesmessage center switchinstrument cluster

PINPOINT TEST A: THE MESSAGE CENTER IS NOT OPERATING CORRECTLY (HIGH SERIES INSTRUMENT CLUSTER)

Test Step Result / Action to Take

A1 CHECK THE MESSAGE CENTER DISPLAY OPERATIONUSING THE DIAGNOSTIC TOOL

Key in ON position.Enter the following diagnostic mode on the diagnostictool: Instrument Cluster Active Command.Select the instrument cluster display segment controlactive command and trigger the display segmentsactive command on. Observe the message centerdisplay.Does the message center display illuminate allsegments?

Yes The system is OK. If the SET, INFO orRESET buttons are inoperative, Go ToPinpoint Test D.

No GO to A2.

A2 CHECK FOR CORRECT INSTRUMENT CLUSTEROPERATION

Disconnect the instrument cluster connector.Check for:

corrosionpushed-out pins

Connect the instrument cluster connector and makesure it seats correctly.Operate the system and verify the concern is stillpresent.Is the concern still present?

Yes INSTALL a new instrument cluster. REFERto Section 413-01. TEST the system fornormal operation.

No The system is operating correctly at thistime. The concern may have been causedby a loose or corroded connector.

Pinpoint Test B: The Compass Is Inoperative

Normal Operation

The compass sensor module receives voltage from the smart junction box (SJB) through circuit CBP18 (GY/OG)and is grounded through circuit GD143 (BK/VT). The compass sensor module communicates the vehicle




direction to the instrument cluster, which is displayed in the message center. The compass sensor module usescircuits VMC30 (BU/GY) and VMC31 (YE/GN) to communicate to the instrument cluster.

Possible Causesfusecircuit CBP18 (GY/OG) opencircuit GD143 (BK/VT) opencircuit VMC30 (BU/GY) open or short to groundcircuit VMC31 (YE/GN) open or short to groundcompass sensor module

PINPOINT TEST B: THE COMPASS IS INOPERATIVE

CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correctprobe adaptor(s) may damage the connector.


B1 CHECK CIRCUIT CBP18 (GY/OG) FOR VOLTAGE

Key in OFF position.Disconnect: Compass Sensor Module C909.Key in ON position.Measure the voltage between the compass sensormodule C909-3, circuit CBP18 (GY/OG), harnessside and ground.

Is the voltage greater than 10 volts?

Yes GO to B2.

No VERIFY the SJB fuse 18 (10A) is OK. If OK,REPAIR the circuit. CLEAR the DTCs.REPEAT the self-test.

B2 CHECK CIRCUIT GD143 (BK/VT) FOR AN OPEN

Key in OFF position.Measure the resistance between the compasssensor module C909-4, circuit GD143 (BK/VT),harness side and ground.

Yes GO to B3.

No REPAIR the circuit. CLEAR the DTCs.REPEAT the self-test.



Is the resistance less than 5 ohms?

B3 CHECK CIRCUIT VMC30 (BU/GY) FOR AN OPEN ANDA SHORT TO GROUND

Disconnect: Instrument Cluster C220.Measure the resistance between the compasssensor module C909-2, circuit VMC30 (BU/GY),harness side and the instrument cluster C220-10,circuit VMC30 (BU/GY), harness side; and betweenthe compass sensor module C909-2, circuit VMC30(BU/GY), harness side and ground.

Is the resistance less than 5 ohms between thecompass sensor module and the instrumentcluster, and greater than 10,000 ohms betweenthe compass sensor module and ground?

Yes GO to B4.

No REPAIR the circuit. TEST the system fornormal operation.

B4 CHECK CIRCUIT VMC31 (YE/GN) FOR AN OPEN ANDA SHORT TO GROUND

Measure the resistance between the compasssensor module C909-1, circuit VMC31 (YE/GN),harness side and the instrument cluster C220-11,circuit VMC31 (YE/GN), harness side; and betweenthe compass sensor module C909-1, circuit VMC31(YE/GN), harness side and ground.

Yes INSTALL a new compass sensor module. SETthe zone. REFER to Compass ZoneAdjustment in this section. CALIBRATE thecompass. REFER to Compass Calibration inthis section. CLEAR the DTCs. REPEAT theself-test.

No


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Is the resistance less than 5 ohms between thecompass sensor module and the instrumentcluster, and greater than 10,000 ohms betweenthe compass sensor module and ground?

REPAIR the circuit. TEST the system fornormal operation.

Pinpoint Test C: The Compass Is Inaccurate

Normal Operation

The compass sensor module communicates the vehicle direction to the instrument cluster to display in themessage center.

Possible Causesvehicle is magnetizedzone settingcompass out of calibrationcompass sensor module

PINPOINT TEST C: THE COMPASS IS INACCURATE


C1 DEMAGNETIZE THEVEHICLE

Demagnetize thevehicle. Refer toVehicleDemagnetizing in thissection.Does the compassoperate correctly?

Yes The compass is OK. The concern may have been caused by an incorrectzone setting, a magnetized vehicle, or the compass was out of calibration.

No GO to C2.

C2 CHECK THE COMPASSACCURACY




Position the vehicleand observe thecompass display asfollows:

DirectionCompassDisplay

North N

Northeast NE

East E

Southeast SE

South S

Southwest SW

West W

Northwest NW

Does the compassdisplay asindicated?

Yes The compass is OK. The concern may have been caused by an incorrectzone setting, a magnetized vehicle, or the compass was out of calibration.

No INSTALL a new compass sensor module. SET the zone. REFER to CompassZone Adjustment in this section. CALIBRATE the compass. REFER toCompass Calibration in this section. TEST the system for normal operation.

Pinpoint Test D: The Message Center Switch Does Not Operate Correctly (High Series InstrumentCluster)

Normal Operation

The message center switch uses circuit CMC29 (GN/VT) to communicate the requested switch function to theinstrument cluster message center. The message center switch is grounded through circuit RMC32 (GN/BU).Each message center switch uses a different resistance value allowing the instrument cluster to determine whichswitch is pressed.

Possible Causescircuit CMC29 (GN/VT) open, short to ground or short to voltagecircuit RMC32 (GN/BU) openmessage center switchinstrument cluster


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PINPOINT TEST D: THE MESSAGE CENTER SWITCH DOES NOT OPERATE CORRECTLY (HIGH SERIES INSTRUMENTCLUSTER)



D1 CHECK THE INSTRUMENT CLUSTER PID FOR THE MESSAGECENTER SWITCH

Key in ON position.Enter the following diagnostic mode on the diagnostic tool:Instrument Cluster PID.Select and monitor the instrument cluster message center switchPID while pressing each message center switch (INFO, SETUP,and RESET).Does the PID agree with the switch position?

Yes GO to D5.

No GO to D2.

D2 CHECK CIRCUIT CMC29 (GN/VT) FOR AN OPEN AND A SHORT TOGROUND

Key in OFF position.Disconnect: Instrument Cluster C220.Disconnect: Message Center Switch C253.Measure the resistance between the instrument cluster C220-19,circuit CMC29 (GN/VT), harness side and the message centerswitch C253-3, circuit CMC29 (GN/VT), harness side; andbetween the instrument cluster C220-19, circuit CMC29 (GN/VT),harness side and ground.

Is the resistance less than 5 ohms between the instrumentcluster and the message center switch, and greater than10,000 ohms between the instrument cluster and ground?

Yes GO to D3.

No REPAIR the circuit. TEST thesystem for normal operation.

D3 CHECK CIRCUIT CMC29 (GN/VT) FOR A SHORT TO VOLTAGE

Key in ON position.Yes REPAIR the circuit. TEST the



Measure the voltage between the instrument cluster C220-19,circuit CMC29 (GN/VT), harness side and ground.

Is any voltage present?

system for normal operation.

No GO to D4.

D4 CHECK CIRCUIT RMC32 (GN/BU) FOR AN OPEN

Key in OFF position.Measure the resistance between the message center switchC253-2, circuit RMC32 (GN/BU), harness side and the instrumentcluster C220-17, circuit RMC32 (GN/BU), harness side.


Yes INSTALL a new message centerswitch. REFER to MessageCenter Switch in this section.TEST the system for normaloperation.

No REPAIR the circuit. TEST thesystem for normal operation.

D5 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION



Connect the instrument cluster connector and make sure it seatscorrectly.Operate the system and verify the concern is still present.Is the concern still present?

Yes INSTALL a new instrumentcluster. REFER to Section 413-01. TEST the system for normaloperation.

No The system is operating correctlyat this time. The concern mayhave been caused by a loose orcorroded connector.

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Pinpoint Test E: The Outside Air Temperature Display Does Not Operate Correctly (Base InstrumentCluster without Electronic Automatic Temperature Control)

Normal Operation

The outside air temperature sensor is hardwired to the instrument cluster through circuits VH407 (YE/GN) andRMC32 (GN/BU). The message center displays the outside air temperature upon receipt of the outside airtemperature data.

Possible Causescircuit VH407 (YE/GN) open or short to groundcircuit RMC32 (GN/BU) openambient air temperature sensorinstrument cluster

PINPOINT TEST E: THE OUTSIDE AIR TEMPERATURE DISPLAY DOES NOT OPERATE CORRECTLY (BASE INSTRUMENTCLUSTER WITHOUT ELECTRONIC AUTOMATIC TEMPERATURE CONTROL)



E1 RETRIEVE AND RECORD THE DIAGNOSTIC TROUBLE CODES(DTCs) FROM BOTH THE CONTINUOUS AND ON-DEMANDINSTRUMENT CLUSTER SELF-TESTS

Check for recorded instrument cluster DTCs from thecontinuous and on-demand self-tests.Are instrument cluster DTCs B1255 or B1257 retrieved?

Yes GO to E3.

No GO to E2.

E2 CHECK THE AMBIENT AIR TEMPERATURE SENSORFUNCTION

Key in OFF position.Disconnect: Ambient Air Temperature Sensor C132.Measure the resistance between the ambient air temperaturesensor C132 pin 1, component side and the ambient airtemperature sensor C132 pin 2, component side.

Yes GO to E4.

No INSTALL a new ambient airtemperature sensor. CLEAR theDTCs. REPEAT the self-test.



Is the resistance within the specified values for thesetemperature ranges: 10-20°C (50-68°F), 37,000-58,000ohms; 20-30°C (68-86°F), 24,000-37,000 ohms; 30-40°C(86-104°F), 16,000-24,000 ohms?

E3 CHECK CIRCUIT VH407 (YE/GN) FOR AN OPEN OR SHORT TOGROUND

Key in OFF position.Disconnect: Instrument Cluster C220.Measure the resistance between the instrument cluster C220-21, circuit VH407 (YE/GN), harness side and the ambient airtemperature sensor C132-1, circuit VH407 (YE/GN), harnessside; and between the instrument cluster C220-21, circuitVH407 (YE/GN), harness side and ground.

Is the resistance less than 5 ohms between theinstrument cluster and the ambient air temperaturesensor, and greater than 10,000 ohms between theinstrument cluster and ground?

Yes GO to E4.


E4 CHECK CIRCUIT RMC32 (GN/BU) FOR AN OPEN

Measure the resistance between the instrument cluster C220-17, circuit RMC32 (GN/BU), harness side and the ambient airtemperature sensor C132-2, circuit RMC32 (GN/BU), harnessside.

Yes GO to E5.





E5 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION



Connect the instrument cluster connector and make sure itseats correctly.Operate the system and verify the concern is still present.Is the concern still present?

Yes INSTALL a new instrument cluster.REFER to Section 413-01. TEST thesystem for normal operation.

No The system is operating correctly atthis time. The concern may havebeen caused by a loose or corrodedconnector. CLEAR the DTCs.REPEAT the self-test.

Pinpoint Test F: The WASHER FLUID LOW LEVEL Warning Is Incorrect

Normal Operation

The instrument cluster is hardwired to the low washer fluid switch (part of the windshield washer reservoir)through circuit CMC20 (VT). The low washer fluid switch closes when the washer fluid level is approximately 1/3full, providing a ground to the instrument cluster through circuit GD108 (BK/VT) and turning on the WASHERFLUID LOW LEVEL warning. When the washer fluid is above the low level, the low washer fluid switch opens,removing the ground to the instrument cluster, and the WASHER FLUID LOW LEVEL warning turns off.

Possible Causescircuit GD108 (BK/VT) opencircuit CMC20 (VT) open or short to groundlow washer fluid level switch (part of the windshield washer reservoir)instrument cluster

PINPOINT TEST F: THE WASHER FLUID LOW LEVEL WARNING IS INCORRECT





NOTE: Verify that the washer fluid reservoir is full and that the key has been cycled at least once prior to carryingout the pinpoint test.


F1 DETERMINE THE CONDITION

Key in ON position.Does the WASHER FLUID LOW LEVEL warningilluminate?

Yes GO to F5.

No GO to F2.

F2 CHECK THE WASHER FLUID LEVEL SWITCH

Disconnect: Washer Fluid Level Switch C138.Key in ON position.Connect a fused (10A) jumper wire between the washerfluid level switch C138-1, circuit CMC20 (VT), harnessside and ground.

Does the WASHER FLUID LOW LEVEL warningilluminate?

Yes GO to F3.

No GO to F4.

F3 CHECK CIRCUIT GD108 (BK/VT) FOR AN OPEN

Measure the resistance between the washer fluid levelswitch C138-2, circuit GD108 (BK/VT), harness side andground.


Yes INSTALL a new windshield washerreservoir. REFER to Section 501-16.TEST the system for normal operation.


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F4 CHECK CIRCUIT CMC20 (VT) FOR AN OPEN

Key in OFF position.Disconnect: Instrument Cluster C220.Measure the resistance between the instrument clusterC220-9, circuit CMC20 (VT), harness side and thewasher fluid level switch C135-1, circuit CMC20 (VT),harness side


Yes GO to F7.


F5 CHECK THE WASHER FLUID LEVEL SWITCH OPERATION

Disconnect: Washer Fluid Level Switch C138.Monitor the WASHER FLUID LOW LEVEL warning.Does the WASHER FLUID LOW LEVEL warning goout?

Yes INSTALL a new windshield washerreservoir. REFER to Section 501-16.TEST the system for normal operation.

No GO to F6

F6 CHECK CIRCUIT CMC20 (VT) FOR A SHORT TO GROUND

Key in OFF position.Disconnect: Instrument Cluster C220.Measure the resistance between the instrument clusterC220-9, circuit CMC20 (VT), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes GO to F7.


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F7 CHECK FOR CORRECT INSTRUMENT CLUSTEROPERATION



Connect the instrument cluster connector and make sureit seats correctly.Operate the system and verify the concern is stillpresent.Is the concern still present?

Yes INSTALL a new instrument cluster.REFER to Section 413-01. TEST thesystem for normal operation.

No The system is operating correctly at thistime. The concern may have been causedby a loose or corroded connector.


message over the can circuit to another module. the ...€¦ · refer to wiring diagrams cell 60...

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