199003160 - P0621 Alternator D signal

The error is detected following a check on the L-terminal status both with the engine off (with detail short circuit to earth) and with the engine running (with detail open circuit or short circuit to +Vbatt.)

		Test results
1	ALTERNATOR CHECK	All OK	Problems encountered	Operation
	Check that the alternator is charging correctly, by carrying out    See Test 5530BB BATTERY VOLTAGE CHECK	End of diagnosis	-	-