TPS Throttle Position Sensor Adjustment

ADJUSTMENT OF IDLE POSITION SWITCH AND THROTTLE POSITION SENSOR (TPS)

It is alot and be sure to use a feeler guage otherwise it won't be right

(1) Disconnect the throttle position sensor connector.

(2) Using jumper wires, connect an ohmmeter across terminal 3 (idle position switch) and terminal 4 (sensor ground) of the throttle

position sensor.

(3) Insert a 0.65-mm-thick feeler gauge between the fixed SAS and throttle lever.

(4) Loosen the throttle position sensor mounting bolts and turn the TPS body fully counterclockwise.

(5) In this condition, check that there is continuity across terminals 3 and 4.

(6) Slowly turn the throttle position sensor clockwise until you find a point at which there is no continuity across terminals 3 and 4.

Then, tighten the throttle position sensor mounting bolt securely.

(7) Connect the throttle position sensor connector.

(8) When using the multi-use tester, connect it to the diagnosis connector.

(9) When not using the multi-use tester, proceed as follows:

Disconnect the throttle position sensor connectors andconnect the special tool, Test Harness Set, between the disconnected connectors.

Connect a digital voltmeter between the throttle positionsensor terminal 2 (sensor output) and teminal 4 (sensor ground).

(l0) Turn the ignition switch ON (but do not start the engine).

(11) Check the throttle position sensor output voltage. When using the multi-use tester, select item No. 14 and read the throttle

position sensor output voltage. Standard value: 400 - 1,000 mV

(12) If the voltage is out of specification, check the throttle position sensor and associated harnesses.

(13) Remove the feeler gauge.

(14) Turn the ignition switch OFF.

CHECK THE THROTTLE POSITION SENSOR TO MAKE SURE ITS FUNCTIONING CORRRECTLY:

(1) Disconnect the throttle position sensor connector

(2) Measure rsistance between terminal 4 (sensor Ground) and Terminal 1 (sensor power) Standar value 3.5 - 6.5 Kilo Ohms

(3) Connect a pointer type ohmmeter between terminal 4(sensor ground) and terminal 2 (sensor output).

(4) Operate the throttle valve slowly from the idle position to the full open position and check that the resistance changes smoothly

in proportion with the throttle valve opening angle.

(5) If the resistance is out of specification, or fails to change smoothly, replace the throttle position position sensor. Torque to 2.0

Nm (1.5 ft.lbs.)

CHECK THE THROTTLE POSITION SWITCH TO MAKE SURE ITS FUNCTIONING CORRRECTLY:

The Idle postition switch is different from the sensor, The switch is only used to tell the ECU if the the car is at Idle or not.

(1) With the accelerator pedal released, check to be sure that the throttle valve lever or the fixed SAS is pushed, if not adjust the

fixed SAS (2) Disconnect the throttle sensor connector.

(3) Check the continuity across the throttle position sneosr connector terminal 4 (sensor ground) and 3 (idle position

switch)