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B1064–CLIMATE CONTROL MOTOR(S) COMMON 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 (C807) COMMON DOOR DRIVER 2 CIRCUIT SHORTED TO VOLTAGE A/C HEATER CONTROL Theory of Operation The A/C Heater Control drives the Mode Door 1 (Floor to Panel) Actuator via the (C29) Mode Door 1 Driver circuit Diagnostic Test 1. CHECK (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Turn the ignition on. Measure the voltage of the (C807) Common Door Driver 2 circuit. Is the voltage above 0.2 volts? Yes >> Repair the (C807) Common Door Driver 2 circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1. No >> Go To 2 HB HVAC - ELECTRICAL DIAGNOSTICS 24 - 273 |