Diagnostic Test

CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE AND CONTROL CIRCUIT OPEN DTCs
1. Turn the ignition on.
2. With the scan tool, read active HVAC DTCs.
  Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs?
  
  Yes
  - Diagnose and repair the DTCs. If present, diagnose and repair all Control Circuit/Performance DTCs before diagnosing Control Circuit Open DTCs.
  No
  - Go to step 2
INSPECT ACTUATOR AND HOUSING ASSEMBLY FOR A CONDITION CAUSING THE MODE DOOR TO SEIZE OR BIND
1. Turn the ignition off.
2. Inspect the actuator, linkage, and housing assembly for a condition causing the mode door to seize or bind.
  Are there any physical or mechanical problems with the door, housing, linkage, or actuator?
  
  Yes
  - Repair as necessary in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
  No
  - Go to step 3
CHECK MODE DOOR TRAVEL
1. Remove the Mode Door Actuator from the A/C Heater Housing Assembly.
2. By hand, attempt to rotate the door in both directions. The door should operate smoothly in both directions over the entire span of travel (approximately 240 degrees).
  Does the door operate smoothly in both directions over the entire span of travel?
  
  Yes
  - Replace the Mode Door Actuator in accordance with the Service Information. Then, Go To 4.
  No
  - Repair as necessary in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
RUN THE ACTUATOR CALIBRATION TEST
1. Turn the ignition on.
2. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs.
  Does the scan tool display: B1044-PANEL MODE DOOR 1 TRAVEL RANGE TOO SMALL?
  
  Yes
  - 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
  No
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure