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6. S/C SWITCH #2 SIGNAL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect both S/C Switch harness connectors. Disconnect the ECM harness connectors. 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 the S/C Switch #2 Signal circuit. Is the voltage above 1.0 volt? Yes >> Repair the S/C Switch #2 Signal circuit for a short to volt- age. Perform the ECM Verification Test Ver. 1 (Refer to 9 - No >> Replace and program the Engine Control Module in accor- dance with the Service Information. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 9 - 1082 ENGINE DIESEL DIAG KJ |