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Tipm not receiving ac clutch on command

Ac charge is good, the pressure switches are good. tipm is not getting ac clutch command, pcm does not appear to be either..the led on the panel does light up...but looking at the data for the instrument cluster it shows led not on...although it is visually on. also shows 4.2 volts at the switch. ...I can command the ac compressor clutch on through the tipm and it does work. don't have a lot of info on these....but the switch in the control panel sends a signal to the ic? and then is working properly to the pcm?

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6 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

  • 6 Answers

SOURCE: 1991 Sierra GMC AC control problem

The follwing is a cut and paste from a service bulletin:

Bulletin No.: 461202

Date: May, 1994




A/C Control Head flashes, performs erratically or malfunctions.


Light surface corrosion on the Control Head terminals.


Remove the A/C Control Head and while holding the unit with the terminal
cavity down (toward the floor) so no particles will fall inside on the
circuit boards, polish the terminals on both sides of the cavity with a lead
pencil pink eraser. Do not use an ink eraser or other abrasive such as a
small wire brush or sandpaper, etc. Doing so will remove the terminal
coating and degrade the contact surface.

Performing this procedure, in many cases, will make replacing the Control
Head unnecessary. Using this procedure in conjunction with the A/C circuit
diagnosis found in the Electrical Diagnosis Manual and especially before
replacing a Control Head for any reason is recommended.

After polishing the Control Head terminals, but before reconnecting, check
for proper terminal contact as described in the applicable electrical
diagnosis manual. If contact is good, apply dielectric grease (P/N 12345579)
to the harness connector terminals. Please do not apply grease to the
Control Head.

Posted on Jun 30, 2009

  • 34 Answers

SOURCE: 2002 Honda Civic A/C not working

high and low pressure swich try putting freon in it

Posted on Aug 12, 2009

  • 79186 Answers

SOURCE: 2008 sebring 2.4l. ac compresseor

In this car the fault you have is commonly caused by a fault in the IOD (Ignition off draw)) system of the car, this 073 is most often set after a battery is disconnected or run very low, but not always, the IOD fuses keep all the accessory memories alive, often this affects things like the AC functioning, with 073 present the AC will not turn on. What you need to do is remove the two (2) 30 amp fuses under the hood marked "IOD" (should be fuse 7 and 8) for a few minutes to reset the memory and the BCM (Body Control Module), this may restore the AC function. If this doesn't work you really need a scan tool to read all the inputs and outputs of the system or you will just be spinning your wheels.

Posted on Jul 21, 2011

  • 5332 Answers

SOURCE: ac not working ac compressor not getting power

Check the a/c fuse in the under hood fuse block. If the fuse is good swap the a/c relay with one of the other relay that is the same part number in the fuse block. If the compressor still will not turn on than you will need a high end scan tool to look at the a/c data in the PCM.

Posted on Jul 25, 2012

  • 4825 Answers

SOURCE: 2007 Chrysler pt cruiser ac clutch not

send issue to a master on any model

Posted on Oct 11, 2013

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2006 Jeep Liberty ac not working,fuses are fine,relay good replaced low and high pressure switches refrigerant level is good still won't work

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Auto Trans Rebuild Chapter 8 Air Check
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