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B1032–EVAPORATOR FIN TEMPERATURE SENSOR 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 (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN (C121) SENSOR GROUND CIRCUIT OPEN EVAPORATOR TEMPERATURE SENSOR A/C HEATER CONTROL NOTE: This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC Diagnostic Test 1. CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the A/C Heater Control C2 harness connector. Turn the ignition on. Measure the voltage of the (C21) Evaporator Temperature Sensor Sig- Is the voltage above 0.2 volts? Yes >> Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to voltage. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 No >> Go To 2 24 - 288 HVAC - ELECTRICAL DIAGNOSTICS WK |