Engine Control System (4HK1) 1A-85
4
1. Turn OFF the ignition.
2. Disconnect the FRP regulator harness
connector.
3. Inspect for an intermittent, for poor
connections and corrosion at the harness
connector of the FRP regulator (pins 1 and 2
of E-17).
4. Disconnect the ECM harness connector.
5. Inspect for an intermittent, for poor
connections and corrosion at the harness
connector of the ECM (pins 89, 97, 105 and
113 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 10 Go to Step 6
5
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 10 Go to Step 8
6
1. Turn OFF the ignition.
2. Place the transmission in Neutral and set the
parking brake.
3. Start the engine.
4. Accelerate the engine between idle and
W.O.T. (accelerator pedal full travel) many
times while observing the Fuel Rail Pressure
and Desired Fuel Rail Pressure parameter
with a scan tool.
Does the Fuel Rail Pressure parameter follow
within the specified value quick enough
(compare with a similar unit if available)?
± 5 MPa (±
725 psi)
Go to Step 7 Go to Step 9
7
Notice: An intermittent problem by foreign material
in the fuel is suspected.
Replace the fuel filter element. Refer to Fuel Filter
Element in Section 1D Engine Fuel .
Did you complete the replacement?
—
Go to Step 10
—
8
Replace the FRP sensor. Refer to Fuel Pressure
Sensor in Section 1D Engine Fuel.
Did you complete the replacement?
—
Go to Step 10
—
Step Action Value(s) Yes No
LG4HKED-WE-0871.book 85 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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