Alternator output and power demand of all electrical loads and systems must be matched to each other as ideally as possible so that the entire system is reliable and trouble-free in operation. The ECM monitors alternator output deviation from the signal of the FR terminal of the alternator when the engine is running.
If the alternator's output duty signal is over 50% under IG ON (Engine speed is below 20rpm.), ECM sets P0625.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Signal check, low |
•
Short to Ground in harness
•
Poor connection or damaged harness |
Enable Conditions |
•
Engine speed < 20rpm | |
Threshold Value |
•
Alternator duty > 50% | |
Diagnostic Time |
•
- | |
MIL ON Condition |
•
NO MIL |
