If a power supply is suspended into the 4WD ECU before IG OFF, the 4WD ECU sets P1779 and lets a warning lamp turn on.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Checking IG voltage and battery voltage | 1. Poor connection 2. Open or short in IG ON circuit 3. When disconnecting 4WD ECU with IG ON |
Enable conditions |
•
IG " ON " or Engine " ON " | |
Diagnostic Time |
•
Immediately | |
Threshold value |
•
Before IG OFF, the battery power supply is suspended. |
