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bill, dodge master tech
Category: Dodge
Satisfied Customers: 1627
Experience:  25 years with dodge drivability and electrical expert
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2007 ram 2500 5.9 diesel 11.9vdc at pins on compressor

Customer Question

2007 ram 2500 5.9 diesel
11.9vdc at pins on compressor
Compressor coil ohm 0.59
Ac compressor will not engage
Submitted: 1 year ago.
Category: Dodge
Expert:  bill replied 1 year ago.

have you jumpered the compressor coil directly with a power and ground to see if it operates properly?

have you verified the charge in the system, and are there any fault codes in the ecm you WILL need a scan tool or good code reader to determine any codes

Customer: replied 1 year ago.
I have not tried to jump direct
The static PSI low side is 190+
Expert:  bill replied 1 year ago.

well first thing is to jumper the coil with direct power and ground, clutch coils were common to fail on early 6.7's so if jumpering it doesn't make it engage then the clutch has failed, if it DOES then yo will definitely need to pull any codes to see if there is a reason the ecm is not commanding the compressor on

Customer: replied 1 year ago.
Last gen first half 5.9 still any difference?
TIPM is only readable with scan tool right?
Expert:  bill replied 1 year ago.

the compressor was similar between 5.9 and 6.7 I do NOT believe they are interchangeable, and tipm can only be read with a scan tool, but FIRST jumper the coil and see what it does

Expert:  bill replied 1 year ago.

following up to see how you are doing