Diagnostic Method
- When the conditions during which the differences of exhaust AVCS target timing advance amount and exhaust AVCS actual timing advance amount is large continues for certain amount of time.
- 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.
- Abnormality Judgment
Judge as NG when the following conditions are established within the predetermined time.
Judgment Value
ABNORMALITY JUDGMENTMalfunction Criteria Threshold Value Σ(Target position - Actual position) > 8000°CA (Bank 1)
> 8000°CA (Bank 2)or (Target position - Actual position) < -4000°CA (Bank 1)
< -4000°CAA (Bank 2)Time Needed for Diagnosis: 50000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- Normality Judgment
Judge as OK and clear the NG if the following conditions are established within the predetermined time.
Judgment Value
NORMALITY JUDGMENTMalfunction Criteria Threshold Value Σ(Target position - Actual position) ≤ 8000°CA (Bank 1)
≤ 8000°CA (Bank 2)
and
≥ -4000°CA (Bank 1)
≥ -4000°CA(Bank 2)Time Needed for Diagnosis: 50000 ms