Isuzu Trooper (2000 year). Manual — part 108
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–52
Check flow
Trouble code
Phenomenon
Standard
13
33
The ADC line is short-circuited to
GND.
—
NOTE:
D
The on/off signal line of the shift on the fly system is
short–circuited to GND.
D
The system enters into the fail-safe mode because of
fusing or system protection.
(If a short–circuit is observed on GND, the output to
the on/off signal line becomes 0V.)
D04RY00008
4B2–53
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–48)1 and (B–48)24
meet the standard, R = 21
±
4 ohms?
The phenomenon
is not
reproduced.
Refer to
“Troubles
intermittently
observed”.
Go to Step 4
Go to Step 2
2
Is the resistance between terminals (B–48)1 and (B–48)24 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–48)1 and (B–48)24 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)
4B2–54
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.
C07RY00019
D
If the status is as tabulated above, there is no
problem. If not as tabulated above, inspect the
harness.
4B2–55
DRIVE LINE CONTROL SYSTEM (TOD)
Chart A
Indicator drive circuit
Function of circuit
The circuit informs the indicator of the working condition of the ECU.
Fail condition
All the TOD indicator lamps and CHECK lamp are lit, and go off momentarily at an inter-
val of about two seconds.
Indicator lamp status
—
Transfer position
2H, TOD, 4L
—
D04RY00015
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