P0638

DTC P0638 THROTTLE ACTUATOR CONTROL RANGE/PERFORMANCE (BANK 1)

1. OUTLINE OF DIAGNOSIS
Judge as NG when the target opening angle and actual opening angle is mismatched or the current to motor is the specified duty or more for specified time continuously.

2. COMPONENT DESCRIPTION






3. ENABLE CONDITION






4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously when the electronic throttle control is operating.

5. DIAGNOSTIC METHOD
Judge as OK and clear the NG when the malfunction criteria below are met.






Time Needed for Diagnosis:
- Difference between target opening angle and actual opening angle:
- NG judgment: Refer to the judgment time detail.
- OK judgment: 2000 ms

- Output duty to drive circuit: 2000 ms

Details of Judgment Value






Judgment time detail






NOTE: Judgment time is constantly 1000 ms with Actual opening angle ≤ Target opening angle.

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.