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B109D–PANEL MODE DOOR 2 CONTROL CIRCUIT HIGH (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 (C139) REAR MODE DOOR DRIVER CIRCUIT SHORTED TO VOLTAGE (C939) REAR MODE DOOR COMMON DRIVER CIRCUIT SHORTED TO VOLTAGE A/C HEATER CONTROL Diagnostic Test 1. CHECK THE (C139) REAR MODE DOOR DRIVER CIRCUIT & THE (C939) REAR MODE DOOR COMMON Turn the ignition off. Disconnect the A/C Heater Control C2 harness connector. Turn the ignition on. Measure the voltage of the (C139) Rear Mode Door Driver circuit. Measure the voltage of the (C939) Rear Mode Door Common Driver Is the voltage above 0.2 volts on either circuit? Yes >> Repair the circuit(s) with voltage above 0.2 volts a short to voltage. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 No >> Go To 2 24 - 272 HVAC - ELECTRICAL DIAGNOSTICS WK |