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B107E–AUXILIARY COOLANT PUMP CONTROL CIRCUIT LOW (ATC) (CONTINUED) 2. CHECK (C43) AUXILIARY COOLANT PUMP DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Measure the resistance of the (C43) Auxiliary Coolant Pump Driver cir- Is the resistance below 10K ohms? Yes >> Repair the (C43) Auxiliary Coolant Pump Driver circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. No >> Replace the A/C Heater Control in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1. HB HVAC - ELECTRICAL DIAGNOSTICS 24 - 121 |