Mechanics

A-C

2001 Ford 500 • 6 cylinder 2WD Automatic • 106,000 miles

'01 Ford Mustang 3.8v6. AC quit. Have 13.2v to low pressure switch, 0v to ac clutch. Have bypassed low and high pressure switchs and clutch will not engage. Clutch will engage if I jump directly to battery. Any ideas? Mark
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Looking at a schmatic, the only idea I have is possibly the constant control relay module. Have no idea where it is located or how to test it. Have checked fuse no. 23 on inside panel and fuse no. 24 in engine compartment


Check the wiring to the clutch could be open-continuity test


Rasmataz
Jun 4, 2011.
Looking at the database, I don't see a 500 made here until 2005.


Wrenchtech
Jun 4, 2011.
Wrenchtech, its not a 500. Regular Mustang 3.8 v6


I see, wrong category. I don't know where you got your fuse numbers from but the inside fuse is #2 and the outside fuse should be labeled A/C pressure. I'm finding no info on the location of the CCRM but they can be mounted near the battery, the headlights or the strut tower. The 98 Mustang has it on the right fender well, next to the air filter. I attached a picture of it. Test for ground on the Pink/yellow wire at the CCRM to know if the PCM is commanding it on.


Wrenchtech
Jun 4, 2011.
I see now where you got the fuse numbers. They supply the control head. The ones I gave you supply the compressor.


Wrenchtech
Jun 4, 2011.
Checked all fuses on inside panel as well as panel under hood, all are good. Why would I have power at the clutch cycling pressure switch, but no power at the clutch?


Because that circuit doesn't go to the clutch. Please test for ground at the CCRM as I asked.


Wrenchtech
Jun 5, 2011.
Hang in there, I'am having a rough time locating the CCRM.
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It's a square box with a single long plug that has one bolt in the middle of the plug holding it on.


Wrenchtech
Jun 5, 2011.

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