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B1043–PANEL MODE DOOR 1 CONTROL CIRCUIT OPEN (ATC) (CONTINUED) For the Automatic Temperature Control (ATC) circuit diagram (Refer to 24 - HEATING & AIR CONDITIONING - For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes (C266) FRONT MODE DOOR DRIVER CIRCUIT OPEN (C66) FRONT MODE DOOR COMMON DRIVER CIRCUIT OPEN FRONT MODE DOOR ACTUATOR A/C HEATER CONTROL Diagnostic Test 1. CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE DTCs? Yes >> Diagnose and repair the DTC(s). Refer to the Table of Contents in this Section for a complete list of all HVAC related symptoms. No >> Go To 2 2. CHECK THE FRONT MODE DOOR ACTUATOR CIRCUIT RESISTANCE Turn the ignition off. Disconnect the A/C Heater Control C2 harness connector. Measure the resistance between the (C266) Front Mode Door Driver Is the resistance above 70.0 ohms? Yes >> Go To 3 No >> Replace the A/C Heater Control in accordance with the Service Information. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 24 - 304 HVAC - ELECTRICAL DIAGNOSTICS WK |