When the actual spark timing is differ from the desired spark timing, ECM sets DTC P050B and turns the MIL on.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Spark timing monitoring | 1. Poor connector connection 2. Faulty ignition coil 3. Faulty ECM |
Enable Condition |
•
3 sec. elapsed after catalyst heating is active
•
Barometric pressure is higher than 750 hPa
•
Engine load is less than 55%
•
Vehicle speed is 0 km/h (0 mph) | |
Threshold Value |
•
Deviation of average ignition efficiency during 10 sec. ishigher than threshold (Actual efficiency - target efficiency) | |
Diagnostic Time |
•
10 sec. | |
MIL ON Condition |
•
3 driving cycles |
