Isuzu 2000 Trooper Workshop Manual page 429

Step
1 1. Turn off the starter switch.
2. Disconnect the ECU connector from ECU.
Is the continuity established between terminals (B–48)1 and
(B–48)24?
2 Does the voltage between terminals (B–48)1 and (B–48)24
indicate 0V?
3 1. Turn off the starter switch.
2. Connect ECU connector.
3. Turn on the starter switch.
4. Set the transfer to the 2H mode.
Is the battery voltage observed between terminals 23 and 46?
4 1. Check that all the parts are mounted.
2. Clear the trouble code.
Is this step complete?
DRIVE LINE CONTROL SYSTEM (TOD)
Action Yes
The harness is
broken. Repair
the circuit.
Go to Step 2 Go to Step 3
The battery is
short-circuited.
Repair the circuit.
Go to Step 3 Go to Step 4
The phenomenon
is not reproduced
Refer to
The ECU has
"Troubles
intermittently failed. Replace
observed".
Go to Step 4
Go to Step 4
Repeat the
"Diagnosis Flow". Return to Step 4
4B2–51
No
the ECU.