If the ECM/PCM detects that the MIL control line is open or short circuit to ground or battery line, ECM/PCM sets DTC P0646.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Electrical check | 1. Open or short between MIL and ECM/PCM 2. Poor connection or damaged harness 3. Burned out MIL bulb |
Enable Conditions |
•
6V < Battery < 16V | |
Threshold Value |
•
Open circuit, short circuit to ground or battery | |
Diagnostic Time |
•
0.1 sec. | |
MIL On Condition |
•
- |
