If the number of knock sensor errors is less than the lower limit or the upper limit, ECM/PCM sets P0326.
Item | Detecting Condition | Possible Cause | |
DTC Strategy | Case1 |
•
Signal check high | 1. Poor connection 2. Open or short in signal circuit 3. Knock sensor |
Case2 |
•
Signal check low | ||
Case3 |
•
Knock control signal evaluation | ||
Case4 |
•
Electrical check | ||
Enable Conditions | Case1 |
•
Engine coolant temperature > 40℃
•
Engine speed > 2440rpm
•
Engine load > 35% | |
Case2 |
•
Engine coolant temperature > 40℃
•
Engine speed > 2440rpm
•
Engine load > 35% | ||
Case3 |
•
- | ||
Case4 |
•
- | ||
Threshold Value | Case1 |
•
Normalized reference level > upper limit | |
Case2 |
•
Normalized reference level < lower limit | ||
Case3 |
•
Signal evaluation of current
•
Combustion implausible
•
Measuring window of knock
•
Evaluation implausible | ||
Case4 |
•
Short circuit to ground, line A
•
Short circuit to ground, line B
•
Short circuit to battery, line A
•
Short circuit to battery, line B | ||
Diagnosis Time |
•
- | ||
MIL ON Condition | Case1 |
•
2 trips | |
Case2 |
•
2 trips | ||
Case3 |
•
2 trips | ||
Case4 |
•
2 trips | ||
