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A/C compressor not working but works fine with hand held diagnostic connected to either side of relay. Changed out A/C control unit - still not working. Need wiring diagram to troubleshoot.
Country: CanadaMake: ChryslerModel: PacificaYear: 2004Engine: 3.5 Already Tried: changed out control unit in dash but still no cold air. Checked charge - good. All blowers, etc working but compressor not starting. Tried using hand held diagnostic at both sides of relay in fuse panel and works good either way.
Hi,Ok, do you have automatic or manual climate control, and do you have single or dual zone temperature control?
Unit is automatic, dual zone temp. control.
Hi,Ok, below in pdf file format for easy downloading and printing is the wiring diagram for the compressor specific to your model.CLICK HERE FOR WIRING DIAGRAMPlease note, your Deposit doesn't constitute a payment. Please be sure to rate OK SERVICE, GOOD SERVICE OR EXCELLENT SERVICE to complete transaction or ask for more help by clicking REPLY TO EXPERT. Positive feedback is always appreciated. Bonuses are welcome. Please note that if you have a subscription service you still need to to rate OK SERVICE, GOOD SERVICE OR EXCELLENT SERVICE , however you are not charged again. Thank you.Please note the 1 to 2 faces(POOR AND BAD SERVICE) are a negative rating. Before choosing one of these, please reply first so that I can further help you
Experience: automotive store manager, technician 20+ years experience
Ok, below in pdf file format for easy downloading and printing is the wiring diagram for the compressor specific to your model.CLICK HERE FOR WIRING DIAGRAMPlease note, your Deposit doesn't constitute a payment. Please be sure to rate OK SERVICE, GOOD SERVICE OR EXCELLENT SERVICE to complete transaction or ask for more help by clicking REPLY TO EXPERT. Positive feedback is always appreciated. Bonuses are welcome. Please note that if you have a subscription service you still need to to rate OK SERVICE, GOOD SERVICE OR EXCELLENT SERVICE , however you are not charged again. Thank you.Please note the 1 to 2 faces(POOR AND BAD SERVICE) are a negative rating. Before choosing one of these, please reply first so that I can further help you
Do you have a suggestion as to what could be the problem? The dash board control unit has been replaced with no change. The coolant pressure is up and the unit starts and runs fine using a handheld diagnostic unit. it works when connected on either side of the relay.
Hi,check the pressure sensor for 5v signal from the computer and signal from the pressure sensor back to the computer. If no 5v, then bad computer. If no signal from the sensor, then bad sensor.