Mechanics

WHAT ARE J/C1 AND J/C2 ON PCM

1998 Dodge Ram • 78,000 miles

Are these test points that can be used for looking for relay coil grounds in PCM. Across coil + - I read 2.75v but from relay coil + to frame I get 12.00v
AD
Avatar
David d
April 8, 2012.




Which engine do you have?

C1 is for the A/C compressor relay coil.

KHLow2008
Apr 8, 2012.


AD