Isuzu Trooper (2000 year). Service manual — part 107
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–48
Check flow
Trouble code
Phenomenon
Standard
11
28
The shift on the fly system (front
hub) works incorrectly.
—
NOTE: The shift on the fly system is not changed
between 2WD and 4WD modes normally.
CAUTION: If code 32 or 33 is also observed, remove
the trouble associated with code 32 or 33 first.
D04RY00008
4B2–49
DRIVE LINE CONTROL SYSTEM (TOD)
Step
Action
Yes
No
1
1. Turn on the starter switch.
2. Set the transfer to the 2H mode.
Is the battery voltage observed between terminals 23 and 46?
Go to Step 2
Go to Step 5
2
Is the battery voltage observed between terminals 42 and 46?
Go to Step 3
Go to Step 6
3
1. Set the transfer to the high (TOD) mode.
Does the voltage between terminals 23 and 46 indicate 0V?
Go to Step 4
The ECU has
failed. Replace
the ECU.
Go to Step 7
4
Does the voltage between terminals 42 and 46 indicate 0V?
The phenomenon
is not
reproduced.
Refer to
“Troubles
intermittently
observed”.
Go to Step 7
The shift on the
fly system is
failed (refer to
Section 4C “Front
Axle”).
Go to Step 7
5
Does the TOD indicator show the 2H mode?
The ECU has
failed. Replace
the ECU.
Go to Step 7
See “Trouble
Diagnosis
Depending on
The Status of
TOD Indicator”.
Go to Step 7
6
Set the transfer to the high (TOD) mode.
Does the voltage between terminals 23 and 46 indicate 0V?
The shift on the
fly system has
failed (refer to
Section 4B1
“Driveline Control
System”).
Go to Step 7
The ECU has
failed. Replace
the ECU.
Go to Step 7
7
1. Check that all the parts are mounted.
2. Clear the trouble code.
Is this step complete?
Repeat the
“Diagnosis Flow”.
Return to Step 7
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–50
Check flow
Trouble code
Phenomenon
Standard
12
32
The on/off signal (ADC) line of the
shift on the fly system (front hub) is
broken, or the line is short-circuited
to the battery.
—
NOTE: The on/off signal line of the shift on the fly system
is broken, or the line is short–circuited to the battery.
D04RY00008
4B2–51
DRIVE LINE CONTROL SYSTEM (TOD)
Step
Action
Yes
No
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?
Go to Step 2
The harness is
broken. Repair
the circuit.
Go to Step 3
2
Does the voltage between terminals (B–48)1 and (B–48)24
indicate 0V?
Go to Step 3
The battery is
short-circuited.
Repair the circuit.
Go to Step 4
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?
The phenomenon
is not reproduced
Refer to
“Troubles
intermittently
observed”.
Go to Step 4
The ECU has
failed. Replace
the ECU.
Go to Step 4
4
1. Check that all the parts are mounted.
2. Clear the trouble code.
Is this step complete?
Repeat the
“Diagnosis Flow”.
Return to Step 4
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