THROTTLE POSITION (TP) SENSOR INSPECTION [ZY, Z6]

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Note

•  Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart. (See HOW TO USE THIS MANUAL.)

Resistance Inspection

1.  Verify the following.

•  Throttle valve closed status

•  Accelerator cable play (See ACCELERATOR CABLE INSPECTION/ADJUSTMENT [ZY, Z6])

2.  Disconnect the TP sensor connector.

3.  Verify that the resistance between terminals B and C changes moderately corresponding to the throttle valve openings.

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•  If the resistance change is verified, go to the next step.

•  If the resistance change is not verified, replace the TP sensor. (See THROTTLE POSITION (TP) SENSOR REMOVAL/INSTALLATION [ZY, Z6].)

4.  Measure the resistance between terminals A and B.

•  If not within the specification, replace the TP sensor. (See THROTTLE POSITION (TP) SENSOR REMOVAL/INSTALLATION [ZY, Z6].)

•  If the monitor item condition/specification (reference) is not within the specification, even though there is no malfunction, perform the “Circuit Open/Short Inspection”.

Circuit Open/Short Inspection

1.  Remove the PCM connector cover.

2.  Disconnect the PCM connector. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [ZY, Z6].)

3.  Inspect the following wiring harness for open or short circuit (continuity check).

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Open circuit

•  If there is no continuity, there is an open circuit. Repair or replace the wiring harness.

―  TP sensor terminal A and PCM terminal 2W

―  TP sensor terminal B and PCM terminal 2AE

―  TP sensor terminal C and PCM terminal 2AA

Short circuit

•  If there is continuity, there is a short circuit. Repair or replace the wiring harness.

―  TP sensor terminal A and body GND

―  TP sensor terminal B and power supply

―  TP sensor terminal C and power supply

―  TP sensor terminal C and body GND