If the number of knock sensor errors is less than the lower limit or the upper limit, the ECM sets DTC P0326.
Item | Detecting Condition | Possible Cause | |
Case 1 | DTC Strategy |
•
knock control signal evaluation | 1. Poor connection 2. Open or short in signal circuit 3. Knock sensor |
Threshold Value |
•
Signal evaluation of current combustion implausible
•
Measuring window of knock evaluation implausible | ||
Diagnostic Time |
•
Continous | ||
Case 2 | DTC Strategy |
•
Electrical check | |
Threshold Value |
•
Short circuit to ground, line A
•
Short circuit to ground, line B
•
Short circuit to battery, line A
•
Short circuit to battery, line B | ||
Diagnostic Time |
•
Continous | ||
Case 3 | DTC Strategy |
•
Signal check high | |
Threshold Value |
•
ECT > 40 ℃(104 °F)
•
Engine speed > 2440 rpm
•
Engine load > 35 % | ||
Diagnostic Time |
•
Normalized reference level < Upper limit, f(rpm) | ||
Diagnostic Time |
•
Immediate | ||
Case 4 | DTC Strategy |
•
Signal check low | |
Threshold Value |
•
ECT > 40 ℃(104 °F)
•
Engine speed > 2440 rpm
•
Engine load > 35 % | ||
Diagnostic Time |
•
Normalized reference level < Lower limit, f(rpm) | ||
Diagnostic Time |
•
Immediate | ||
MIL ON Condition |
•
2 driving cycle | ||
