Isuzu N 2008 Series Workshop Manual page 238

Step
Repair or replace the IP cluster. Refer to Instrument
Panel (IP) Cluster in Section 9E Instrumentation/
15
Driver Info.
Did you complete the repair or replacement?
Important: Replacement
programmed and learned.
16
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement?
1. Reconnect all previously disconnected fuse or
harness connector(s).
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
17
4. Turn ON the ignition for 10 seconds.
5. Start the engine.
6. Monitor the DTC Information with a scan tool.
Did the DTC fail this ignition?
Observe the DTC Information with a scan tool.
18
Are there any DTCs that you have not diagnosed?
Action
ECM must
Engine Control System (4JJ1)
Value(s)
—
be
—
—
—
Yes
Go to Step 17
Go to Step 17
Go to Step 3 Go to Step 18
Go to DTC List
1A-235
No
—
—
System OK