Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 626
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–24
No.
CONTENTS
NAME
26
N.C
Not used
27
N.C
Not used
28
N.C
Not used
29
DIAG
Diagnostic Input
30
TOD SW
TOD Switch
31
4H SW
4H Switch Input
32
Frt. Sig
Front Speed Signal
33
ABS IN
ABS In
34
VIG
Ignition
35
N.C
Not used
36
4WD OUT
4WD Signal Output
37
BRAKE
Brake Switch Input
38
N.C
Not used
39
N.C
Not used
40
LIGHTING SW
Lighting Switch Input
41
N.C
Not used
42
AXLE SW
Axle Switch Input
43
N.C
Not used
44
4L SW
4L Switch Input
45
Rr. Sig
Rear Speed Signal
46
GND
ECU Ground 1
47
GND. 2
ECU Ground 2
48
N.C
Not used
4B2–25
DRIVE LINE CONTROL SYSTEM (TOD)
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
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–26
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
Multi-
meter
Scale/
Range
Measure
between
Pin
Number
Standard Valve
Note
4
D-G MAP
OFF
STOP
W
4, 46
Continuity : OK
22
P-GND
OFF
STOP
W
22, 46
Continuity : OK
46
GND
OFF
STOP
W
46, GND
Continuity : OK
31
4H SW
OFF
STOP
W
31, 46
No continuity
(high, 4L) and
continuity (N) :
OK
44
4L SW
OFF
STOP
W
44, 46
No continuity
(high) and conti-
nuity (4L, N) :
OK
42
AXLE SW
ON
RUN
W
42, 46
Continuity : OK
Remove ECU and start the
engine. Move the vehicle forth
and back to connect axle surely.
29
DIAG
OFF
STOP
W
29 (TOD),
8 (DLC
Connec-
tor)
Continuity : OK
DLC connector terminal 8
17
IND.a
ON
STOP
DCV
17 (+), 46
(–)
8.0
∼
14.5 V
When the indicator lamp is turned
off.
6
IND.b
ON
STOP
DCV
6 (+), 46
(–)
8.0
∼
14.5 V
When the indicator lamp is turned
off.
18
IND.c
ON
STOP
DCV
18 (+), 46
(–)
8.0
∼
14.5 V
When the indicator lamp is turned
off.
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
4B2–27
DRIVE LINE CONTROL SYSTEM (TOD)
Che
ck
Pin
No.
Note
Standard Valve
Measure
between
Pin
Number
Multi-
meter
Scale/
Range
Engine
State
Ignition
Switch
Position
Circuit to
be tested
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
W
36, 46
7
∼
12 k
W
Disconnect battery GND terminal
23
ADC(+)
OFF
STOP
W
23, 46
10
∼
30
W
Disconnect battery GND terminal
11
SOL(+)
OFF
STOP
W
11, 46
1.0
∼
5.0
W
Disconnect battery GND terminal
30
4WD SW
ON
STOP
DCV
30 (+), 46
(–)
SW OFF : 0 V
SW ON : 8.0
∼
14.5 V
SW OFF : Contact point open
SW ON : Contact point close
40
LIGHT-
ING
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&4L : 8.0
∼
14.5 V
Connect ECU.
8
RR INDI
ON
STOP
DCV
8 (+), 46
(–)
0 V
Connect ECU. When the indicator
lamp is turned on.
34
VIG
ON
STOP
DCV
34 (+), 46
(–)
8
∼
14.5 V
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