Isuzu N 2008 Series Workshop Manual page 63

1A-60 Engine Control System (4JJ1)
Step
1. Inspect the crankshaft position (CKP) sensor
and the camshaft position (CMP) sensor the
following conditions:
• Physical damage of sensor
• Loose or improper installation of sensor
• Excessive air gap
• Foreign material passing between sensor
and sensor rotor or chain sprocket
• Physical damage of sensor rotor or chain
sprocket
3
• Loose or improper installation of sensor
rotor or chain sprocket
2. Inspect the engine mechanical timing for the
following conditions:
• Incorrectly installed timing gear or chain
• Faulty timing chain tensioner
• Excessive play in the timing chain
• Timing chain that jumped teeth
3. Repair or replace as necessary.
Did you complete the repair?
1. Reconnect
harness connector(s) if disconnected.
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Start the engine. If the engine does not start,
crank over the engine for 10 seconds.
4
5. Operate the vehicle within the Conditions for
Running the DTC. You may also operate the
vehicle
observed from the Freeze Frame/ Failure
Records.
Did the DTC fail this ignition?
Observe the DTC Information with the a scan tool.
5
Are there any DTCs that you have not diagnosed?
Action
all previously disconnected
within the conditions
Value(s)
—
—
that you
—
Yes
Go to Step 4
Go to Step 2 Go to Step 5
Go to DTC List
No
—
System OK