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6. ENGINE CONTROL MODULE - INTERNAL If there are no possible causes remaining, view repair. Repair Replace and program the Engine Control Module in accordance with the Service Information. Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). 7. BRAKE SWITCH SENSE CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the Brake Lamp Switch harness connector. Disconnect the ECM harness connectors. Measure the resistance between ground and the Brake Switch Sense Is the resistance above 1000 ohms? Yes >> Go To 8 No >> Repair the Brake Switch Sense circuit for a short to ground. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 8. BRAKE SWITCH SENSE CIRCUIT OPEN Turn the ignition off. Disconnect the Brake Lamp Switch harness connector. Disconnect the ECM harness connectors. Measure the resistance of the Brake Switch Sense circuit. Is the resistance below 10.0 ohms? Yes >> Go To 9 No >> Repair the Brake Switch Sense circuit for an open. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 9 - 1006 ENGINE DIESEL DIAG KJ |