Isuzu Trooper (1998-2002 year). Service manual — part 146
4B2–71
DRIVE LINE CONTROL SYSTEM (TOD)
Step
Action
Yes
No
1
1. Turn off the starter switch.
2. Disconnect the ECU connector from ECU.
Does the resistance between terminals (B–67) 5 and (B–67) 11
meet the standard, 17<R<25 ohms?
The phenomenon
is not
reproduced.
Refer to
“Troubles
intermittently
observed”.
Go to Step 2
2
Is the resistance between terminals (B–67) 5 and (B–67) 11 R<2
ohms?
The signal line
circuit of the shift
on the fly system
is short-circuited
to GND. Repair
the circuit.
Go to Step 4
Go to Step 3
3
Is the resistance between terminals (B–67) 5 and (B–67) 11 R=
9
±
7ohms?
The signal line
circuit of the shift
on the fly system
is layer
short-circuited*.
Replace the valve
(VSV).
Go to Step 4
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
*Layer short-circuit : The coil is damaged by overcurrent.
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–72
Check flow
Trouble code
Phenomenon
Standard
14
25
The CHECK lamp indicator line is
short–circuited to the battery.
—
35
The line is broken or short–circuited
to GND.
—
D04RY00063
4B2–73
DRIVE LINE CONTROL SYSTEM (TOD)
Step
Action
Yes
No
1
1. Turn on the starter switch.
Is the CHECK lamp always turned on?
Go to Step 2
Go to Step 3
2
1. Turn off the starter switch.
2. Disconnect the ECU connector.
3. Turn on the starter switch.
Is the CHECK lamp always turned on?
The CHECK
circuit is
short-circuited to
GND. Repair the
circuit.
Go to Step 7
The ECU has
failed. Replace
the ECU.
Go to Step 7
3
Turn on the starter switch.
Is the CHECK lamp always turned off?
Go to Step 4
Go to Step 6
4
Turn on the starter switch.
Is the battery voltage observed between terminals 30 and 19?
Go to Step 5
The CHECK
circuit wires are
broken or the
CHECK lamp is
failed. Repair the
circuit.
Go to Step 7
5
Turn off the starter switch.
Is the battery voltage observed between terminals 30 and 19?
The battery is
short–circuited.
Repair the
CHECK lamp
circuit.
Go to Step 7
The ECU has
failed. Replace
the ECU.
Go to Step 7
6
Turn on the starter switch.
Does the CHECK lamp go off two seconds after?
The phenomenon
is not
reproduced.Refer
to “Troubles
intermittently
observed”.
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)
4B2–74
Trouble Diagnosis Depending on The
Status of TOD Indicator
Functional check with TOD indicator light is conducted
prior to check on Charts A–H.
D
After the starter is switched on, check and see if the
status has become as tabulated below.
C07RW012–1
D
If the status is as tabulated above, there is no
problem. If not as tabulated above, inspect the
harness.
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