1A-270 Engine Control System (4HK1)
5
Connect a test lamp between the charge voltage
circuit and battery voltage.
Does the test lamp illuminate?
—
Go to Step 8
Go to Step 9
6
1.
Test the control circuits between the ECM and
the in-line harness connector for a short to
ground.
• Cylinder #1: Between pin 119 of E-12
and 5 of H-70
• Cylinder #4: Between pin 117 of E-12
and 8 of H-70
2.
Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 15
Go to Step 14
7
1.
Test the charge voltage circuits between the
ECM and the in-line harness connector for a
short to battery or ignition voltage.
• Cylinder #1: Between pin 119 of E-12
and 5 of H-70
• Cylinder #4: Between pin 117 of E-12
and 8 of H-70
2.
Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 15
Go to Step 14
8
1.
Test the charge voltage circuits between the
ECM and the in-line harness connector for a
short to ground.
• Cylinder #1: Between pin 121 of E-12
and 1 of H-70
• Cylinder #4: Between pin 121 of E-12
and 4 of H-70
2.
Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 15
Go to Step 14
9
1.
Inspect for an intermittent and for poor
connections at the in-line harness connector.
2.
Disconnect the ECM harness connector.
3.
Inspect for an intermittent and for a poor
connection at the harness connector of the
ECM.
4.
Inspect for an open circuit or high resistance
on the charge voltage circuit between the
ECM and the in-line harness connector.
5.
Repair the connection(s) or circuit(s) as
necessary.
Did you find and correct the condition?
—
Go to Step 15
Go to Step 10
10
1.
Remove the cylinder head cover. Refer to
Cylinder Head Cover in Section 1B Engine
Mechanical.
2.
Inspect the fuel injector harness for loose
injector terminal nuts, objects touching injector
terminals.
3.
Inspect for an intermittent and for poor
connections at the in-line harness connector.
4.
Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 15
Go to Step 11
Step
Action
Value(s)
Yes
No
LG4HKED-WE-0871.book 270
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２００７年１１月２９日 木曜日 午後６時２９分
