Commander 2WD V8-4.7L (2008)
PARTS REQUIRED:
MTC REPAIR PROCEDURE:
1. Replace the manual temperature control head. Refer to TechCONNECT for detailed repair procedures, select the SERVICE INFO tab /24 - Heating
& Air Conditioning > Controls > Controls A/C Heater Removal and Installation.
2. Perform a manual door calibration:
a. Turn blower motor off
b. Hold the EBL (defrost) button while turning the blower on.
c. Hold EBL for 5 seconds. EBL will blink at 1 HZ until test is complete (approximately 1 minute). Test is complete when the EBL stops blinking.
NOTE:
If EBL and ATC begin to blink then there are diagnostic trouble codes set in the control head requiring further diagnosis.
ATC REPAIR PROCEDURE:
1. Record the ATC control software part number.
2. Does the ATC control p/n end in "55111876ZA"?
a. Yes >> Following procedures in DealerCONNECT > TechCONNECT > Heating and
Air Conditioning > Controls > Control, A/C and Heater > replace the ATC control.
After performing control replacement, initiate the Actuator Calibration function using the scan tool (Refer to Section 28 - DTC-Based
Diagnostics/HVAC - Diagnosis and Testing).
b. No >> Control does not require replacement, proceed to Repair Procedure - Flash.
REPAIR PROCEDURE - Flash:
NOTE:
If this flash process is interrupted/aborted, the flash should be restarted.
1. Using the wiTECH Diagnostic Application for flashing an ATC is made available through the wiTECH Diagnostic Application. For instructions
select the "HELP" tab on upper portion of the wiTECH window, then "HELP CONTENTS". This will open the Welcome to wiTECH Help screen
were help topics can now selected.
2. After reprogramming clear any DTC's that may have been set in other modules due to the reprogramming. The wiTech application will automatically
present all DTC's after the flash and allow the tech to clear them.
POLICY:
Reimbursable within the provisions of the warranty.
