Isuzu 2008MY N Series Workshop Manual page 178

Step
1. Reconnect
harness connector(s).
2. Clear the DTCs with a scan tool.
Notice: A history DTC will not clear. (Euro 4
specification)
3. Turn OFF the ignition for 30 seconds.
8
4. Start the engine.
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?
Important: Replacement
programmed and learned.
9
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.
Notice: A history DTC will not clear. (Euro 4
specification)
3. Turn OFF the ignition for 30 seconds.
10
4. Start the engine.
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.
11
Are there any DTCs that you have not
diagnosed?
Action
all previously disconnected
the conditions that
ECM must
all previously disconnected
the conditions that
Engine Control System (4HK1)
Value(s)
—
you
be
—
—
you
—
Yes
Go to Step 9 Go to Step 11
Go to Step 10
Go to Step 2 Go to Step 11
Go to DTC List
1A-175
No
System OK