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Alternators, PCMs and Volt Drops
Posted to Technical Theory Forum on 7/23/2011 24 Replies

This vehicle came in with the battery light on. Scan data shows a p0621 (L signal low or high if memory serves), voltage of 14.2 and a duty cycle of 38%.

Mitchell's diag path for the P0621 had you check for voltage with the L wire commanded off. Checks OK. T... Login to read more.

24 Replies Received (View Replies)

 

car Vehicle Data

2001 Saturn L200 2.2L

Engine2.2 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

2001 Saturn L200 2.2L

Engine2.2 L
Trans4-speed Automatic (Electronic)