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12. CLUTCH INTERLOCK SWITCH Turn the ignition off. Remove the Starter Relay from the PDC. Disconnect the Clutch Interlock Switch harness connector. Connect a jumper wire across the Clutch Interlock Switch harness con- Using a 12-volt test light connected to ground, check the Ignition Switch Does the test light illuminate with the ignition switch in the Yes >> Replace the Clutch Interlock Switch. Perform the ECM Verification Test Ver. 1 (Refer to 9 - No >> Go To 13 13. CLUTCH INTERLOCK SWITCH OUTPUT CIRCUIT OPEN Turn the ignition off. Disconnect the Clutch Interlock Switch harness connector. Remove the Starter Relay from the PDC. Measure the resistance of the Clutch Interlock Switch Output circuit Is the resistance below 10.0 ohms? Yes >> Repair the Ignition Switch Start Output circuit to the Clutch Interlock Switch. Perform the ECM Verification Test Ver. 1 (Refer to 9 - No >> Repair the Clutch Interlock Switch Output circuit for an open. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 9 - 682 ENGINE DIESEL DIAG KJ |