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B10A4–LEFT BLEND DOOR 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 (C255) LEFT BLEND DOOR DRIVER CIRCUIT SHORTED TO VOLTAGE (C55) LEFT BLEND DOOR COMMON DRIVER CIRCUIT SHORTED TO VOLTAGE A/C HEATER CONTROL Diagnostic Test 1. CHECK THE (C255) LEFT BLEND DOOR DRIVER CIRCUIT & THE (C55) LEFT BLEND DOOR COMMON Turn the ignition off. Disconnect the A/C Heater Control C2 harness connector. Turn the ignition on. Measure the voltage of the (C255) Left Blend Door Driver circuit. Measure the voltage of the (C55) Left Blend Door Common Driver cir- 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 - 232 HVAC - ELECTRICAL DIAGNOSTICS WK |