Isuzu Trooper (2000 year). Manual — part 104
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–36
Step
Action
Yes
No
1
1. Connect TECH 2.
While running in TOD mode, does TECH–2’s front speed sensor
indication change with vehicle speed?
Go to Step 2
Repair and
inspection front
speed sensor
tone wheel.
Go to Step 4
2
Is the continuity between harness of terminal 45 and ground
(vehicle side terminal of the rear speed sensor)?
Replace speed
sensor.
Go to Step 3
Repair the circuit.
Go to Step 3
3
1. Clear the trouble code.
While running at 30 mph in TOD mode for 30 consecutive sec, is
trouble code reissued?
Replace EUC.
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”.
The trouble is not
reproduced.
Refer to
“Troubles
intermittently
observed”.
Return to Step 4
4B2–37
DRIVE LINE CONTROL SYSTEM (TOD)
Check flow
Trouble code
Phenomenon
Standard
5
24
Rear speed sensor signal open or
GND short, speed sensor COM
open.
0.3 V < sensor voltage
NOTE: The following procedure shows the case that the
front or rear sensor common grounding line is broken.
D04RY00004
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–38
Step
Action
Yes
No
1
1. Start the engine.
2. Select 4H (TOD) mode.
Is the memory except DTC 24?
Go to Step 3
Go to Step 2
2
Is the continuity between harness of terminal 45 and ground
(vehicle side terminal of the rear speed sensor)?
Replace speed
sensor.
Go to Step 6
Repair the circuit.
Go to Step 6
3
Is the memory DTC 14?
Go to Step 4
Refer to other
trouble cheek
flow.
Go to Step 2
4
Is the continuity between harness of terminal 32 and 45 (vehicle
side terminal of the front and rear speed sensor)?
Go to Step 5
Repair the circuit
Go to Step 6
5
Is the continuity between harness of terminal 12 and 13 (vehicle
side terminal of the speed sensor COM and ref)?
Replace front and
rear speed
sensor.
Go to Step 6
Repair the circuit.
Go to Step 6
6
1. Check that all the parts are mounted.
2. Clear the trouble code.
Is the step complete?
Repeat the
“Diagnosis Flow”.
The trouble is not
reproduced.
Refer to
“Troubles
intermittently
observed”.
Return to Step 6
4B2–39
DRIVE LINE CONTROL SYSTEM (TOD)
Check flow
Trouble code
Phenomenon
Standard
6
13
The reference is short-circuited to
GND.
Reference
]
5 V
15
The reference Vb is short-circuited.
If the reference wire (15) is short-circuited to GND, the
speed signal is not generated. If the wire is short-circuited
to the battery voltage, the signal level becomes faulty.
D04RY00004
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