Throttle Position Sensor: Testing and Inspection
Resistance InspectionNOTE: Perform the following test only when directed.
1. Inspect for throttle valve CTP and accelerator cable free play.
- If as specified, inspect resistance of the TP sensor.
2. Disconnect the TP sensor connector.
3. Measure the resistance between the TP sensor terminals A and C using an ohmmeter.
- If not as specified, replace .
- If as specified, but PID value or PCM terminal 89 voltage are out of specification, carry out the "Circuit Open/Short Inspection".
Specification: 4 - 6 kOhms
Circuit Open/Short Inspection
1. Remove the PCM.
2. Connect the SST(104 Pin Breakout Box) to the PCM as shown.
3. Tighten the connector attaching screw.
Tightening torque
7.9 - 10.7 N.m {80 - 110 kgf.cm, 69.5 - 95.4 in.lbf}
4. Inspect for an open or short circuit in the following wiring harnesses by probing the applicable sensor and SST (104 Pin Breakout Box) terminals with ohmmeter leads.
- If there is an open or short circuit, repair or replace wiring harnesses.
- If there is no open or short circuit, replace the TP sensor.
Open circuit
- Constant voltage circuit (TP sensor connector terminal A and PCM connector terminal 90)
- TP signal circuit (TP sensor connector terminal B and PCM connector terminal 89)
- GND circuit (TP sensor connector terminal C and PCM connector terminal 91)
Short circuit
- Constant voltage circuit (TP sensor connector terminal A and PCM connector terminal 90)
- TP signal circuit (TP sensor connector terminal B and PCM connector terminal 89)
5. Reconnect the TP sensor connector.