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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (6.7L Diesel - DTCS - P040D To P1191 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P0647-A/C Control Circuit High >> Testing >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK THE (C13) A/C COMPRESSOR CLUTCH CONTROL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: Checking The A/C Compressor Clutch Control Circuit For A Short To Voltage
    GC0148752Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the TIPM C1 harness connector.
      NOTE:

      Check connectors - Clean/repair as necessary.

    3. Turn the ignition on, engine not running.
    4. Using a Voltmeter, measure the voltage on the (C13) A/C Compressor Clutch Control circuit at the TIPM C1 harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (C13) A/C Compressor Clutch Control circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .

      No 

      • Go To  2.
  2. CHECK THE POWERTRAIN CONTROL MODULE 
    Fig 2: Checking PCM/TIPM Control Circuits
    GC0148751Courtesy of CHRYSLER LLC
    1. Using a 12-Volt test light connected battery positive, probe the (C13) A/C Compressor Clutch Control circuit at the TIPM C1 harness connector while actuating the A/C Compressor Clutch with the scan tool.
      NOTE:

      The test light must illuminate brightly.

    2. Compare the brightness to that of a direct connection to the Battery.

      Does the test light illuminate brightly?

      Yes 

      • Go To  3.

      No 

      • Replace the Powertrain Control Module in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  3. CHECK THE TOTALLY INTEGRATED POWER MODULE 
    1. Reconnect the TIPM C1 harness connector.
    2. Using a back probing tool back probe the (C3) A/C Compressor Clutch Output Control circuit in the TIPM C1 harness connector.
    3. Using a 12-Volt test light connected to ground, probe the (C3) A/C Compressor Clutch Output Control at the TIPM C1 harness connector while actuating the A/C Compressor Clutch circuit with the scan tool.
      NOTE:

      The test light must illuminate brightly.

    4. Compare the brightness to that of a direct connection to the battery.

      Does the test light illuminate brightly?

      Yes 

      No 

      • Replace the Totally Integrated Power Module in accordance with the service information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
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