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Engine Control System (4JH1) 6E-143 4 1. Turn OFF the ignition. 2. Disconnect the engine control module (ECM) 3. Inspect for an intermittent, for a poor 4. Test for high resistance on ignition voltage 5. Repair the connection(s) or circuit(s) as Did you find and correct the condition? — Go to Step 6 Go to Step 5 5 Replace the ignition switch. Did you complete the replacement? — Go to Step 6 — 6 1. Reconnect all previously disconnected 2. Clear the DTCs with the Tech 2. 3. Turn OFF the ignition for 30 seconds. 4. Start the engine. 5. Observe the DTC Information with the Tech 2. 6. Turn OFF the ignition. Does the DTC fail this ignition before the ECM — Go to Step 2 Go to Step 7 7 Observe the DTC Information with the Tech 2. Are there any DTCs that you have not diagnosed? — Go to Diagnostic Trouble Code (DTC) List System OK Step Action Value(s) Yes No |