Engine Control System (4HK1) 1A-83
12
1. Turn OFF the ignition.
2. Disconnect the FRP sensor harness
connector.
3. Inspect for an intermittent, for poor
connections and corrosion at the harness
connector of the FRP sensor (pins 1, 2 and 3
of E-19).
4. Disconnect the ECM harness connector.
5. Inspect for an intermittent, for poor
connections and corrosion at the harness
connector of the ECM (pins 82, 87, 90 and
101 of E-12).
6. Test for high resistance on each circuit.
7. Repair the connection(s) or circuit(s) as
necessary.
Did you find and correct the condition?
—
Go to Step 17 Go to Step 14
13
Replace the fuel filter element. Refer to Fuel Filter
Element in Section 1D Engine Fuel .
Did you complete the replacement?
—
Go to Step 17
—
14
Replace the FRP sensor. Refer to Fuel Pressure
Sensor in Section 1D Engine Fuel.
Did you complete the replacement?
—
Go to Step 17
—
15
Important: Replacement fuel injector must be
programmed.
Replace the appropriate fuel injector that does not
change engine speed when commanded OFF.
Refer to Injector in Section 1D Engine Fuel.
Did you complete the replacement?
—
Go to Step 17
—
16
Important: The fuel supply pump must be timed to
the engine and adjustment value must be learned
to the ECM.
Notice: Always replace the fuel filter element when
a fuel supply pump is replaced.
Replace the fuel supply pump and fuel filter
element. Refer to Fuel Supply Pump and Fuel Filter
Element in Section 1D Engine Fuel.
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 2 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 83 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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