Diagnostic Method
- Crankshaft Timing Diagnosis
Judge as NG when the timing advance is large. Judge as OK when it is small.
Judge as NG when all the following conditions are established and the continuous time is more than 20 seconds. Judge as OK and clear the NG when the following conditions are not established and the continuous time is more than one second.
Judgment Value
MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCEMalfunction Criteria Threshold Value Basic timing advance <-18°CA or > 18°CA Time Needed for Diagnosis: 20 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- Slow Response Diagnosis
Calculates (integrate by positive and negative separately) the AVCS deviation amount when the timing advance is large. Judges NG if the integrated value is large after 30 seconds has passed, and judges OK if it is small.
Abnormality Judgment
Judge as OK when all of the following conditions are established.
Judgment Value
| Malfunction Criteria | Threshold Value |
|---|---|
| AVCS target position | ≥ 0°CA |
| Target timing advance large integrated counter | 30 seconds or more |
| AVCS positive deviation integrated value or | > 8000 (R Bank)°CA 8000 (L Bank) |
| AVCS negative deviation integrated value | < -2500 (R Bank)°CA -2500 (L Bank) |
Time Needed for Diagnosis: 30 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Normality Judgment
Judges OK when all of the following conditions are established, and clears the NG.
Judgment Value
| Malfunction Criteria | Threshold Value |
|---|---|
| AVCS target position | ≥ 0°CA |
| Target timing advance large integrated counter | 30 seconds or more |
| AVCS positive deviation integrated value or | ≤ 8000 (R Bank)°CA 8000 (L Bank) |
| AVCS negative deviation integrated value | ≥ -2500 (R Bank)°CA -2500 (L Bank) |