Isuzu 4HL1 Workshop Manual page 55

Engine control system
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Step
1.
Replace the ECM.
Important:
If necessary (for the vehicle equipped with
22
idle stop function), input the number of
startups to replacing the ECM.
Is the action complete?
Re-observe the CHECK ENGINE lamp for
operation.
1.
Certainly install necessary components
such as connectors, fuses, and relays.
23
2.
Starter switch "ON", and observe the
CHECK ENGINE lamp.
Is the CHECK ENGINE lamp "ON"?
Action
Engine Control System 1A-53
Value(s)
Yes
Verify repair and
go to Step 2
Repair is
complete
No
Go to Step 1

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