Isuzu Trooper (2000 year). Manual — part 101
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–24
Reference
D
Transfer connector pin assignment (connector on the
transfer case)
for inspection of transfer pins.
810RW310
No.
NAME
CONTENTS
1
Ref. (Rer. )
Rear speed sensor reference output
2
Ref. (Frt. )
Front speed sensor reference output
3
SW GND
SW GND
4
4H SW (+)
4H SW plus terminal
5
Rer. (+)
Rear speed sensor plus
6
Frt. (+)
Front speed sensor plus
7
POWER GND
Power GND
8
SOL (+)
Electromagnetic solenoid
9
COM (–) (Rer. )
Rear speed sensor GND
10
COM (–) (Frt. )
Front speed sensor GND
11
NC
Not used
12
4L SW (+)
4L SW plus terminal
4B2–25
DRIVE LINE CONTROL SYSTEM (TOD)
Checking Failed TOD Control Unit Pin
NOTE:
1. Unplug the ECU connector and the pins, unless
otherwise specified.
2. Before removing the ECU, turn off the ignition switch.
3. If the standard values are not observed, check the
pins with other testers.
Che
ck
Pin
No.
Circuit to be
tested
Ignition
Switch
Position
Engine
State
Multime-
ter
Scale/
Range
Measure be-
tween Pin
Number
Standard Valve
Note
4
D-G MAP
OFF
STOP
m
4, 46
Continuity : OK
22
P-GND
OFF
STOP
m
22, 46
Continuity : OK
46
GND
OFF
STOP
m
46, GND
Continuity : OK
31
4H SW
OFF
STOP
m
31, 46
No continuity (high,
4L) and continuity
(N) : OK
44
4L SW
OFF
STOP
m
44, 46
No continuity (high)
and continuity (4L,
N) : OK
42
AXLE SW
ON
RUN
m
42, 46
Continuity : OK
Remove ECU and start the engine. Move
the vehicle forth and back to connect axle
surely.
29
DIAG
OFF
STOP
m
29 (TOD), 8
(DLC Con-
nector)
Continuity : OK
DLC connector terminal 8
17
IND.a
ON
STOP
DCV
17 (+), 46 (–)
8.0
∼
14.5 V
6
IND.b
ON
STOP
DCV
6 (+), 46 (–)
8.0
∼
14.5 V
18
IND.c
ON
STOP
DCV
18 (+), 46 (–)
8.0
∼
14.5 V
20
CHECK
LAMP
ON
STOP
DCV
20 (+), 46 (–)
8.0
∼
14.5 V
33
ABS IN
ON
STOP
DCV
33 (+), 46 (–)
11.5
∼
14.5 V
12
Ref.
ON
STOP
DCV
12 (+), 46 (–)
5
∼
9 V
Connect ECU
32
Ft.(+)
ON
STOP
DCV
32 (+), 46 (–)
0.7
∼
6 V
Connect ECU and move the vehicle (off one
tooth of speed sensor ring) making sure of
voltage change.
45
Rr.(+)
ON
STOP
DCV
45 (+), 46 (–)
0.7
∼
6 V
Connect ECU and move the vehicle (off one
tooth of speed sensor ring) making sure of
voltage change.
13
COM(-)
ON
STOP
DCV
13 (+), 46 (–)
0V
Connect ECU
14
Vig
ON
STOP
DCV
14 (+), 46 (–)
8
∼
14.5 V
37
BRAKE
OFF
STOP
DCV
37 (+), 46 (–)
8
∼
14.5 V
Press brake pedal
15
TPS
ON
STOP
DCV
15 (+), 46 (–)
PWM duty cycle
10% – 90%
Step on the accelerator pedal and make
sure that duty cycle changes.
36
4WD OUT
OFF
STOP
m
36, 46
7
∼
12 k
m
Disconnect battery GND terminal
23
ADC(+)
OFF
STOP
m
23, 46
10
∼
30
m
Disconnect battery GND terminal
11
SOL(+)
OFF
STOP
m
11, 46
1.0
∼
5.0
m
Disconnect battery GND terminal
30
TOD SW
ON
STOP
DCV
30 (+), 46 (–)
SW OFF : 8.0
∼
14.5
V
SW ON : 0 V
SW OFF : Contact point open
SW ON : Contact point close
40
LIGHTING
ON
STOP
DCV
40 (+), 46 (–)
SW OFF : 8.0
∼
14.5
V
SW ON : 0 V
19
AUTO INDI
ON
STOP
DCV
19 (+), 46 (–)
TOD : 0 V
2H : 8.0
∼
14.5 V
8
RR INDI
ON
STOP
DCV
8 (+), 46 (–)
0 V
34
VIG
ON
STOP
DCV
34 (+), 46 (–)
8
∼
14.5 V
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–26
Tech 2 Scan Tool
From 98 MY, Isuzu dealer service departments are
recommended to use Tech 2. Please refer to Tech 2 scan
tool user guide.
901RW257
Legend
(1) PCMCIA Card
(2) SAE 16/19 Adaptor
(3) DLC Cable
(4) Tech 2
4B2–27
DRIVE LINE CONTROL SYSTEM (TOD)
Getting Started
D
Before operating the Isuzu PCMCIA card with the
Tech 2, the following steps must be performed:
1. The Isuzu 98 System PCMCIA card (1) inserts into
the Tech 2 (4).
2. Connect the SAE 16/19 adapter (2) to the DLC cable
(4).
3. Connect the DLC cable to the Tech 2 (4)
4. Mark sure the vehicle ignition is off.
5. Connect the Tech 2 SAE 16/19 adapter to the vehicle
DLC connector.
821RW021
6. The vehicle ignition turns on.
7. Power up the Tech 2.
8. Verify the Tech 2 power up display.
060RW009
Operating Procedure
The power up screen is displayed when you power up the
tester with the Isuzu systems PCMCIA card. Follow the
operating procedure below.
060RY027
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