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6E-234 Engine Control System (4HK1) 10 1. Remove the cylinder head cover. Refer to Fuel 2. Inspect the fuel injector harness for loose 3. Inspect for an intermittent and for a poor 4. Repair the connection(s) as necessary. Did you find and correct the condition? — Go to Step 15 Go to Step 11 11 1. Disconnect the fuel injector harness from the 2. Measure the insulation resistance between 3. Measure the insulation resistance between Is the insulation resistance more than the specified 1 M Ω Go to Step 12 Go to Step 13 12 Repair or replace the injector harness. Refer to Did you complete the repair or replace? — Go to Step 15 — 13 Important: Replace the appropriate fuel injector that was less Did you complete the replacement? — Go to Step 15 — 14 Important: Replace the ECM. Refer to Engine Control Module Did you complete the replacement? — Go to Step 15 — 15 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. Did the DTC fail this ignition? — Go to Step 3 Go to Step 16 16 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 |