Isuzu 4JA1 Workshop Manual page 477

Step
16 Important: Replacement
programmed.
Replace the ECM. Refer to Engine Control Module
(ECM) Replacement in this section.
Did you complete the replacement?
17 1. Reconnect all previously disconnected fuse or
harness connector(s).
2. Clear the DTCs with the scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Start the engine.
5. Monitor the DTC Information with the scan tool.
Did the DTC fail this ignition?
18 Observe the DTC Information with the scan tool.
Are there any DTCs that you have not diagnosed?
Action
ECM must
Engine Control System (4JH1) 6E-223
Value(s)
be



Trouble Code (DTC)
Yes
Go to Step 17
Go to Step 2 Go to Step 18
Go to Diagnostic
List
No

System OK