Isuzu N 2008 Series Workshop Manual page 150

Step
1. Inspect for an intermittent and for poor
connections at the harness connector of the
CMP sensor (pins 1, 2 and 3 of E18).
14
2. Repair the connection(s) as necessary.
Did you find and correct the condition?
1. Turn OFF the ignition.
2. Disconnect the ECM harness connector.
3. Inspect for an intermittent and for poor
connections at the harness connector of the
15
ECM (pins 87, 98, 100 and 101 of E12).
4. Repair the connection(s) as necessary.
Did you find and correct the condition?
1. Inspect the CMP sensor and chain sprocket
for the following conditions:
• Physical damage of sensor
• Loose or improper installation of sensor
• Excessive air gap
• Foreign material passing between sensor
16
and chain sprocket
• Physical damage of chain sprocket
• Loose or improper installation of chain
sprocket
2. Repair or replace as necessary.
Did you find and correct the condition?
Replace the CMP sensor. Refer to CMP Sensor in
Section 1B Engine Mechanical.
17
Did you complete the replacement?
Important: Replacement
programmed and learned.
18
Replace the ECM. Refer to ECM Replacement.
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.
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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.
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Are there any DTCs that you have not diagnosed?
Action
ECM must
all previously disconnected
the conditions that
Engine Control System (4JJ1)
Value(s)
—
—
—
—
be
—
—
you
—
Yes
Go to Step 19 Go to Step 16
Go to Step 19 Go to Step 18
Go to Step 19 Go to Step 17
Go to Step 19
Go to Step 19
Go to Step 3 Go to Step 20
Go to DTC List
1A-147
No
—
—
System OK