If clutch S/W signal is ON, this signal is sent to ECM which monitors cltuch operation. That is used to monitor driving and shifting. ECM starts engine by controlling starter relay if clutch signal is ON at idle stop.
ECM sets DTC P0820 if neutral gear switch is ON for more than 4 sec. while clutch switch is on and engine rpm changes. In this case, Idle stop function is not performing by ECM
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Signal check, low | 1. Poor connection 2. Neutral S/W circuit 3. Neutral S/W |
Enable Conditions |
•
No misfire detection
•
Clutch torque > 20%
•
Delta engine speed > 40rpm/segment | |
Threshold Value |
•
Netral postion sensor signal ON | |
Diagnostic Time |
•
4sec | |
MIL ON Condition |
•
DTC only(Idle stop forbidden) |
