OPERATION
- A power voltage of 5 V is applied to the electronically controlled throttle valve (terminal No. 5) from the engine-A/T-ECU (terminal No. 106).
- The power voltage is earthed to the engine-A/T-ECU (terminal No. 105) from the electronically controlled throttle valve (terminal No. 3).
- The sensor signal is inputted to the engine-A/T-ECU (terminal No. 115) from the electronically controlled throttle valve output terminal (terminal No. 4).
FUNCTION
- The throttle position sensor converts the throttle valve position into voltage and inputs it into the engine-A/T-ECU.
- The engine-A/T-ECU controls the throttle valve position.
TROUBLE JUDGMENT
Check Condition
- Ignition switch is in "ON" position.
Judgment Criterion
- Throttle position sensor (main) output voltage is 0.35 V or less for 0.5 second.
PROBABLE CAUSE
- Failed throttle position sensor (main)
- Open/short circuit in throttle position sensor circuit or loose connector contact
- Failed engine-A/T-ECU
)
Q: Is the check result normal?
YES:
Go to Step 3 
.NO: Repair.
- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Voltage between terminal No. 5 and earth.
OK: 4.9 -
5.1 V
Q: Is the check result normal?
YES:
Go to Step 7 .NO: Go to Step 4
.)
Q: Is the check result normal?
YES:
Go to Step 5 .NO: Repair.
- Check power supply line for open/short circuit.
Q: Is the check result normal?
YES:
Go to Step 6 .NO: Repair.
Q: Is the check result normal?
YES:
Go to Step 8 .NO: Repair.
- Check power supply line for damage.
Q: Is the check result normal?
YES:
Go to Step 9 .NO: Repair.
- Check output line for open/short circuit and damage.
Q: Is the check result normal?
YES:
Go to Step 10 .NO: Repair.