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Posted to HD/Fleet Forum on 2/7/2014 12 Replies

Looking for some help with a 3 axle freightliner Cascadia w/ Detroit diesel w/ sleeper and Sam cab cabin module has a/c unit in sleeper as well. Problem is no a/c clutch operation Freon level is good if I jump the clutch a/c works gets cold. I have checked all grounds and power. No power to clutch from Sam cab module when a/c switch is engaged, customer wired in a fan switch when truck starts to get warm. System only has 1 pressure transducer tried jumping it to see if that was bad made no difference. Have two codes on dash Sam cam erratic other says 249? Sam cab module is behind glove box tough to get too. Any freightliner people seen this before or maybe steer me in the right direction. pulling teeth out literally. Thanks for any and all help!

Jack Mosqueda
County of Riverside
Riverside, California, USA

12 Replies Received (View Replies)


car Vehicle Data

2009 Freightliner Columbia 10.8L

Engine10.8 L