Isuzu 2008MY N Series Workshop Manual page 160

Step
1. Turn OFF the ignition.
2. Disconnect the ECM harness connector.
3. Inspect for
connections and corrosion at the harness
connector of the ECM (pins 95, 107, 108 and
109 of E-12).
4. Disconnect
4
connector.
5. Inspect for
connections and corrosion at the harness
connector of the CKP sensor (pins 1, 2 and 3
of E-20).
6. Repair the connection(s) as necessary.
Did you find and correct the condition?
1. Inspect the CKP sensor and sensor rotor for
the following conditions:
• Physical damage of sensor
• Loose or improper installation of sensor
• Excessive air gap
• Foreign material passing between sensor
5
and sensor rotor
• Physical damage of sensor rotor
• Loose or improper installation of sensor
rotor
2. Repair or replace as necessary.
Did you find and correct the condition?
Replace the CKP sensor. Refer to CKP Sensor in
Section 1B Engine Mechanical.
6
Did you complete the replacement?
1. Reconnect
harness connector(s).
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Start the engine.
7
5. Operate the vehicle within the Conditions for
Running the DTC. You may also operate the
vehicle within
observed from the Freeze Frame/ Failure
Records.
Did the DTC fail this ignition?
Observe the DTC Information with a scan tool.
8
Are there any DTCs that you have not
diagnosed?
Action
an intermittent, for
the CKP sensor harness
an intermittent, for
all previously disconnected
the conditions that
Engine Control System (4HK1)
Value(s)
poor
—
poor
—
—
—
you
—
Yes
Go to Step 7 Go to Step 5
Go to Step 7 Go to Step 6
Go to Step 7
Go to Step 2 Go to Step 8
Go to DTC List
1A-157
No
—
System OK