Isuzu 2000 Trooper Workshop Manual page 434

4B2–56 DRIVE LINE CONTROL SYSTEM (TOD)
Step Action Yes No
1 Turn on the starter switch. The ECU has
failed. Replace Check the battery
Is the battery voltage observed between terminals 14 and 46 or 34
circuit.
the ECU.
and 46?
Go to Step 2
Go to Step 2
2 Check that all the parts are mounted.
Repeat the
Is this step complete? "Diagnosis Flow". Return to Step 2