Isuzu 2008MY N Series User Manual

1A-138 Engine Control System (4HK1)
7
1. Inspect for an intermittent and for poor
connections at the in-line harness connector.
2. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 17 Go to Step 8
8
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 17 Go to Step 13
9
Repair the open circuit or high resistance on the
charge voltage circuits between the ECM and the
in-line harness connector, then between the in-line
harness connector and the fuel injector terminal.
Did you complete the repair?
—
Go to Step 17
—
10
1. Test the control circuit between the ECM and
the in-line harness connector for a short to the
common 2 charge voltage circuit.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 17 Go to Step 15
11
1. Test the control circuit between the ECM and
the in-line harness connector for a short to
battery or ignition voltage.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 17 Go to Step 15
12
1. Test the control circuit between the ECM and
the in-line harness connector for an open
circuit or high resistance.
2. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 17 Go to Step 14
13
1. Test the cylinder #3 fuel injector circuits
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
Step Action Value(s) Yes No
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Isuzu 2008MY N Series Specifications

General

Brand	Isuzu
Model	2008MY N Series
Category	Control Systems
Language	English