Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go to step 2
  No
  - 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 DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
A/C HEATER CONTROL
1. Turn the ignition off.
2. Disconnect the A/C Heater Control C1 harness connector.
3. Turn the ignition on.
4. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go to step 3
  No
  - Replace the A/C Heater Control in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(C105) HVAC MUX CONTROL CIRCUIT SHORTED TO THE (C955) HVAC MUX RETURN CIRCUIT

Fig 1: Measuring Resistance Between HVAC MUX Control Circuit & HVAC MUX Return Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Cluster C2 harness connector.
3. Measure the resistance between the (C105) HVAC MUX Control Circuit and the (C955) HVAC MUX Return circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (C105) HVAC MUX Control Circuit for a short to the (C955) HVAC MUX Return circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 4
(C105) HVAC MUX CONTROL CIRCUIT SHORTED TO GROUND

Fig 2: Measuring Resistance Between Ground & HVAC MUX Control Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (C105) HVAC MUX Control Circuit
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the short to ground in the (C105) HVAC MUX Control Circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Cluster in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .