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3. (K363) PTC NO. 3 RELAY CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the Engine Control Module (ECM) harness connector. Measure the resistance between ground and the (K363) PTC No. 3 Is the resistance above 1000.0 ohms? Yes >> Go to 4 No >> Repair the (K363) PTC No. 3 Relay Control circuit for a short to ground. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 4. (K363) PTC NO. 3 RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (K363) PTC No. 3 Relay Control circuit Is the resistance below 10.0 ohms? Yes >> Go to 5 No >> Repair the (K363) PTC No. 3 Relay Control circuit for an open circuit or high resistance. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 9 - 1824 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |