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
ECM sets DTC P0625 if the ECM detects output duty signal lower than the possible range of a properly operating alternator
Item | Detecting Condition | Possible Cause | |
DTC Strategy | ● Electrical Check | ● Short to battery in harness ● Poor connection or damaged harness | |
Enable Conditions | Case1 | ● Time after ignition ON > 0.1sec. ● Engine speed=0 ● No relevant failure | |
Case2 | ● No relevant failure ● Battery voltage <16V ● 600< Engine speed(rpm) <4000 ● Coolant temp. >74℃(165℉) | ||
Threshold Value | Case1 | ● Alternator load <15% | |
Case2 | ● Alternator load <2% | ||
Diagnostic Time | Case1 | ● 1sec. | |
Case2 | ● 20sec. | ||
MIL On Condition | ● - | ||
