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B1045–PANEL MODE DOOR 1 TRAVEL RANGE TOO LARGE (ATC) For a complete wiring diagram Refer to Section 8W. Theory of Operation The A/C Heater Control calibrates each actuator individually. Automatic calibration occurs upon power up after • When Monitored: • Set Condition: Possible Causes DOOR DRIVER ELECTRICAL CIRCUIT(S) FRONT MODE DOOR OR A/C HEATER HOUSING COMPONENTS WARPED, WORN, DAMAGED, MISSING, FRONT MODE DOOR ACTUATOR A/C HEATER CONTROL Diagnostic Test 1. CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIR- Yes >> Diagnose and repair the DTC(s). If present, diagnose and repair all Control Circuit/Performance DTCs before diagnosing Control Circuit Open DTCs. Refer to the Table of Contents in this Section for a com- No >> Go To 2 2. RUN THE ACTUATOR DTC DETECTION TEST With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is com- Does the scan tool display any DTCs? Yes >> Diagnose and repair the DTC(s). If multiple DTCs are present, diagnose and repair all short high DTCs first, all short low DTCs second, and all open DTCs last. Refer to the Table of Contents in this Section No >> Go To 3 24 - 308 HVAC - ELECTRICAL DIAGNOSTICS WK |