Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. 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