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B1059–RECIRCULATION DOOR CONTROL CIRCUIT LOW (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 (C268) RECIRCULATION DOOR DRIVER CIRCUIT SHORTED TO GROUND (C68) RECIRCULATION DOOR COMMON DRIVER CIRCUIT SHORTED TO GROUND (C268) RECIRCULATION DOOR DRIVER CIRCUIT SHORTED TO (C68) RECIRCULATION DOOR COMMON (C268) RECIRCULATION DOOR DRIVER CIRCUIT SHORTED TO OTHER DOOR DRIVER CIRCUIT(S) (C68) RECIRCULATION DOOR COMMON DRIVER CIRCUIT SHORTED TO OTHER DOOR DRIVER RECIRCULATION DOOR ACTUATOR A/C HEATER CONTROL Diagnostic Test 1. CHECK THE (C268) RECIRCULATION DOOR DRIVER CIRCUIT & THE (C68) RECIRCULATION DOOR Turn the ignition off. Disconnect the A/C Heater Control C2 harness connector. Measure the resistance of the (C268) Recirculation Door Driver circuit Measure the resistance of the (C68) Recirculation Door Common Is the resistance below 10k ohms on either circuit? Yes >> Repair the circuit(s) with a resistance below 10k ohms for a short to ground. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 No >> Go To 2 24 - 312 HVAC - ELECTRICAL DIAGNOSTICS WK |