Engine Control System (4HK1) 1A-141
13
1. Test the cylinder #4 fuel injector circuit
between the fuel injector terminals and the in-
line harness connector for the following
conditions:
• An open circuit
• A short circuit each other
• High resistance
2. Repair the circuit(s) or replace the fuel injector
harness as necessary.
Did you find and correct the condition?
—
Go to Step 17 Go to Step 15
14
1. Turn OFF the ignition.
2. Disconnect the ECM harness connector.
3. Inspect for an intermittent and for a poor
connection at the harness connector of the
ECM.
4. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 17 Go to Step 16
15
Important: Replacement fuel injector must be
programmed.
Replace the cylinder #4 fuel injector. Refer to
Injector in Section 1D Engine Fuel.
Did you complete the replacement?
—
Go to Step 17
—
16
Important: Replacement ECM must be
programmed and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement?
—
Go to Step 17
—
17
1. Reconnect all previously disconnected
harness connector(s).
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Start the engine.
5. Operate the vehicle within the Conditions for
Running the DTC. You may also operate the
vehicle within the conditions that you
observed from the Freeze Frame/Failure
Records.
Did the DTC fail this ignition?
—
Go to Step 3 Go to Step 18
18
Observe the DTC Information with a scan tool.
Are there any DTCs that you have not
diagnosed?
—
Go to DTC List System OK
Step Action Value(s) Yes No
LG4HKED-WE-0871.book 141 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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