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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 102 ((Totally Integrated Power Module (TIPM) - Electrical Diagnostics - 1500, 2500 & 3500)) >> Diagnosis and Testing >> P1275-A/C Control Circuit 2 OVERCURRENT >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. A/C CLUTCH OPERATION 
    1. Ignition on, engine not running.
    2. With a scan tool, actuate the A/C Clutch.

      Does the A/C Clutch actuate?

      Yes 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST  .

      No 

      • Go To  2.
  2. CHECK THE (C3) A/C CLUTCH CONTROL OUTPUT CIRCUIT FOR A SHORT TO GROUND 
    Fig 1: Checking A/C Clutch Control Output Circuit
    GC0091117Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the A/C Compressor Clutch harness connector.
    3. Disconnect the TIPM C1 harness connector.
    4. Measure the resistance between ground and the (C3) A/C Clutch Control Output circuit at the A/C Compressor Clutch harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  3.

      No 

      • Repair the short to ground in the (C3) A/C Clutch Control Output circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST  .
  3. CHECK THE (C3) A/C CLUTCH CONTROL OUTPUT FROM TIPM 
    Fig 2: Checking A/C Clutch Control Output Circuit
    GC0091118Courtesy of CHRYSLER LLC
    1. Reconnect the TIPM C1 harness connector.
    2. Ignition on, engine not running.
    3. Using the 12-volt test light connected to ground, check the (C3) A/C Clutch Control Output circuit in the A/C Compressor Clutch harness connector.
    4. With a scan tool, actuate the A/C Clutch.

      Does the test light illuminate when the A/C Clutch is commanded on?

      Yes 

      • Verify that there is good pin to terminal contact in the A/C Compressor Clutch and TIPM connectors. If OK, replace the A/C Clutch in accordance with the Service Information. Refer to COMPRESSOR, A/C , Removal .
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST  .

      No 

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