Diagnostic Test

A/C CLUTCH OPERATION
1. Ignition on, engine not running.
2. With a scan tool under the PCM Actuators, actuate the A/C Clutch.
  Is the A/C Clutch operating?
  
  Yes
  - Perform the INTERMITTENT CONDITION Diagnostic Procedure. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 2
A/C CLUTCH CONTROL OPERATION FROM THE PCM
1. Turn the ignition off.
2. Disconnect the C1 TIPM harness connector.
3. Ignition on, engine not running.
4. Using the scan tool under the PCM Actuators, actuate the A/C Clutch.
5. With a 12-volt test light connected to ground, probe the (C3) A/C Clutch Control circuit in the C1 TIPM harness connector.
  Does the test light illuminate brightly and flash on an off?
  
  Yes
  - Go to step 3
  No
  - Perform the Diagnostic Procedure for P0645-A/C CLUTCH CONTROL CIRCUIT. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Diagnosis and Testing .
(C3) A/C CLUTCH CONTROL OUTPUT CIRCUIT OPEN

Fig 1: Checking A/C Clutch Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off
2. Disconnect the TIPM C10 harness connector.
3. Disconnect the A/C Compressor Clutch harness connector.
4. Measure the resistance of the (C3) A/C Clutch Control Output circuit between the TIPM C10 harness connector and the A/C Compressor Clutch harness connector.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Go to step 4
  No
  - Repair the short to ground in the (C3) A/C Clutch Control Output circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
A/C CLUTCH

Fig 2: Checking A/C Clutch Circuit
Courtesy of CHRYSLER LLC
1. Connect the C1 and C10 TIPM harness connectors.
2. Ignition on, engine not running.
3. Using the scan tool under the TIPM Actuators, actuate the A/C Clutch.
4. With a 12-volt test light connected to ground, probe the (C3) A/C Clutch Control Output circuit at the A/C Clutch harness connector.
  Does the test light illuminate brightly and flash on and off?
  
  Yes
  - Replace the A/C Clutch in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 5
TOTALLY INTEGRATED POWER MODULE
NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
1. Using the schematics as a guide, inspect the wire harness and connectors.
2. Pay particular attention to all Power and Ground circuits.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .