Isuzu 2000 Trooper Workshop Manual page 466

4B2–88 DRIVE LINE CONTROL SYSTEM (TOD)
Step
1 Is the trouble code 31 or 26 recorded?
2 Is any of the trouble codes 28, 32 and 33 recorded?
3 When the transfer lever is in the specified position, do the TOD
indicator lamps show the correct status?
4 Shift the transfer lever to the 4L position, fully turn the steering to
the left (or right) end, and start the creep run. Does the tight
corner braking occur?
5 1. Shift the transfer lever to the high (TOD) position.
2. Turn on the starter switch.
Does the voltage between terminals 11 and 22 indicate at least
0.1V while the throttle is completely open?
6 Does the voltage between terminals 11 and 22 indicate at least 3V
while the throttle is completely closed?
7 Check that all the parts are mounted.
Is this step complete?
Action Yes
Examine the
trouble based on
"Diagnosis from
Trouble Codes".
Go to Step 7 Go to Step 2
Examine the
trouble based on
"Diagnosis from
Trouble Codes".
Go to Step 7 Go to Step 3
Examine the
trouble based on
Diagnosis
Depending on
The Status of
TOD Indicator".
Go to Step 4 Go to Step 7
Repair the
assembly.
Go to Step 5 Go to Step 7
The ECU has
failed. Replace
the ECU.
Go to Step 6 Go to Step 7
The TOD clutch
is worn. Repair
The ECU has
the transfer
failed. Replace
assembly.
the ECU.
Go to Step 7
Go to Step 7
Repeat the
"Diagnosis Flow". Return to Step 7
No
"Trouble
transfer