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 Compressor 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 TIPM C1 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 SHORTED TO BATTERY VOLTAGE
1. Turn the ignition off
2. Disconnect the C10 TIPM harness connector.
3. Disconnect the A/C Compressor Clutch harness connector.
4. Using a 12-volt test light connected to ground, probe the (C3) A/C Clutch Control Output circuit at the A/C Compressor Clutch harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Repair the short to battery voltage 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
  No
  - Go to step 4
A/C CLUTCH GROUND CIRCUIT OPEN

Fig 1: Checking A/C Clutch Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Connect the C1 and C10 TIPM harness connectors.
3. Using a 12-volt test light connected to 12-volts, probe the (Z902) A/C Clutch ground circuit at the A/C Compressor Clutch harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go to step 5
  No
  - Repair the excessive resistance in the (Z902) A/C Clutch ground circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
A/C COMPRESSOR CLUTCH

Fig 2: Checking A/C Clutch Circuit
Courtesy of CHRYSLER LLC
1. Ignition on, engine not running.
2. Using the scan tool under the TIPM Actuators, actuate the A/C Clutch.
3. With a 12-volt test light connected to ground, probe the (C3) A/C Clutch Control Output circuit at the A/C Compressor Clutch harness connector.
  Does the test light illuminate brightly and flash on and off?
  
  Yes
  - Replace the A/C Compressor Clutch per Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
  No
  - Go to step 6
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 per the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure