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Captiva A/C low pressure switch.

Luke1

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Thanks again! Other than the ECM, are there others components that can come into play please?
 

VT2Commie

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HVAC Controls send serial comms message to BCM, Then BCM send serial comms message to ECM, then ECM commands the A/C relay on, if all other parameters are good.
Refidgerant
Engine Speed
Coolant Temp
etc.
 

Luke1

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I can't thank you enough for all the information you provide!!!! Thanks again. The so called A/C specialist told me that the ECM maybe fried.
The best I can do, is to check for codes to narrow the issue. Thanks again!
 
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