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3. (N112) HIGH SPEED RADIATOR FAN CONTROL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the ECM harness connectors. Remove the High Speed Radiator Fan Relay from the PDC. Remove the ASD Relay from the PDC. Connect a jumper wire between cavity 30 and cavity 87 of the ASD Turn the ignition on. Measure the voltage of (N112) High Speed Radiator Fan Control circuit. Is the voltage below 1.0 volt? Yes >> Replace and program the Engine Control Module in accor- dance with the Service Information. Perform the ECM Verification Test Ver. 1 (Refer to 9 - No >> Repair (N112) High Speed Radiator Fan Control circuit for a short to voltage. Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). 9 - 990 ENGINE DIESEL DIAG KJ |