Diagnostic Method
- Intake side
When the differences of target timing advance amount and actual timing advance amount is calculated during AVCS control, and the difference per predetermined time is the specified value or larger.
Judge as NG when the following conditions are established within the predetermined time.
- Exhaust side
When the differences of target timing advance amount and actual timing advance amount is calculated during exhaust AVCS control, and the difference per predetermined time is the specified value or larger.
Judge as NG when the following conditions are established within the predetermined time.
JUDGMENT VALUE SPECIFICATION
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Intake side | ||
| Σ(Target position - Actual position) | > 4000°CA or < -4000°CA |
P000A P000C |
| Exhaust side | ||
| Σ(Target position - Actual position) | > 4500°CA or < -4500°CA |
P000B P000D |
Integration time: 25s
Time needed for diagnosis: Less than 1 second
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.