OPERATION
- Controls the current that is applied from the engine-A/T-ECU (terminals No. 133, No. 141) to the electronically controlled throttle valve (terminals No. 1, No. 2).
FUNCTION
- Engine-A/T-ECU varies the direction and the amperage of the current that is applied to the throttle valve control servo in order to control the opening of the throttle valve.
TROUBLE JUDGMENT
Check Condition
- Battery positive voltage is 8.3 V or higher.
Judgement Criteria
- Throttle valve control servo current is 12 A or higher for 0.8 second. <Vehicles for Hong kong>
- Short circuit is detected for 0.8 second. <Vehicles except for Hong kong>
PROBABLE CAUSE
- Failed throttle valve control servo
- Short circuit in throttle valve control servo circuit or lose connector contact
- Failed engine-A/T-ECU
)
Q: Is the check result normal?
YES:
Go to Step 2 
.NO: Repair.
- Disconnect connector, and measure at electronically controlled throttle valve side.
- Resistance between terminal No. 1 and No. 2.
OK: 0.3 -
80 Ω
(at 20 °C )
Q: Is the check result normal?
YES:
Go to Step 3 .NO: Replace throttle body assembly.
)
Q: Is the check result normal?
YES:
Go to Step 4 .NO: Repair.
- Check output line for short circuit.
Q: Is the check result normal?
YES:
Go to Step 5 .NO: Repair.
- Check output line for short circuit.
Q: Is the check result normal?
YES:
Go to Step 6 .NO: Repair.
