ISUZU AXIOM 2002 Service Repair Manual

DRIVE LINE CONTROL SYSTEM (TOD) 4B2±22
D04R200020

4B2±23
DRIVE LINE CONTROL SYSTEM (TOD)
D04R200004

DRIVE LINE CONTROL SYSTEM (TOD) 4B2±24
Connector List
No.Connector face
A-1
A-2
C-6
C-10
C-26
C-29
C-37
C-38
C-39
No.Connector face
C-41
E-23
E-34
E-41
H-5
6VD1
H-3
H-7
H-10
H-11

4B2±25
DRIVE LINE CONTROL SYSTEM (TOD)
No.Connector face
H-13
I-23
I-24
I-25
I-31

DRIVE LINE CONTROL SYSTEM (TOD) 4B2±26
Checking Failed Pin
Connector Pin Assignment

TOD control unit pin assignment
D04RY00011
No.NAMECONTENTS
1N.C Not used
2ENG REVEngine Speed
3N.CNot used
4N.CNot used
5N.C Not used
6N.CNot used
7IND.ADisplay Front
8IND. CDisplay Rear
9N.C Not used
10N.C Not used
11EMCClutch Solenoid
12REFSpeed Reference
13COM (±)Speed GND
14VIGIgnition
15TPSTPS (PWM)
16TECH 2TECH±2
17N. CNot used
18N. CNot used
19IND. BDisplay Auto
20CHK TODCheck TOD
21N.CNot used
22PWR GNDPower Ground
23ADC (+)Axle Disconnect Output
24COM GNDShift Motor Position GND
25MTR POS3Shift Motot Position 3

4B2±27
DRIVE LINE CONTROL SYSTEM (TOD)
No. CONTENTSNAME
26MTR POS1Shift Motor Position 1
27POSCAT Position C
28POSAAT Position A
29DIAGDiagnostic Input
30TOD SW ATOD Switch A (2H)
314H SW4H Switch Input
32FT. SIGFront Speed Signal
33ABS INABS In
34VBPower Bat
35MTR H-LPower Shift Motor H-L
364WD OUT4WD Signal Output
37BRAKE SWBrake Switch Input
38MTR POS4Shift Motor Position 4
39MTR POS2Shift Motor Position 2
40LIGHTING SWLighting Switch Input
41POSBAT Position B
42AXLE SWAxle Switch Input
43TOD SWBTOD Switch B (4L)
444L SW4L Switch Input
45RR. SIGRear Speed Signal
46GND. 1ECU Ground 1
47GND. 2ECU Ground 2
48MTR L-HPower Shift Motor L-H

DRIVE LINE CONTROL SYSTEM (TOD) 4B2±28
Reference

Transfer connector pin assignment (connector on the
transfer case)
for inspection of transfer pins.
810RW310
No.NAMECONTENTS
1Ref. (Rer. )Rear speed sensor reference output
2Ref. (Frt. )Front speed sensor reference output
3SW GNDSW GND
44H SW (+)4H SW plus terminal
5RR. SIGRear Speed Sensor Signal
6FT. SIGFront Speed Sensor Signal
7POWER GNDPower GND
8SOL (+)Electromagnetic solenoid
9COM (±) (Rer. )Rear speed sensor GND
10COM (±) (Frt. )Front speed sensor GND
11NCNot used
124L SW (+)4L SW Plus Terminal

4B2±29
DRIVE LINE CONTROL SYSTEM (TOD)
8±6
No.NAMECONTENTS
1MTR POS2Shift Motor Position 2
2MTR POS3Shift Motor Position 3
3MTR POS4Shift Motor Position 4
4MTR L-HPower Shift Motor L-H
5POS RETURNShift Motor Position GND
6MTR POS1Shift Motor Position 1
7MTR H-LPower Shift Motor H-L
8NCNot Used

DRIVE LINE CONTROL SYSTEM (TOD) 4B2±30
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.
Check
Pin
No.Circuit to be
testedIgnition
Switch
PositionEngine
StateUnit
Scale/
RangeMeasure
between
Pin No.Standard ValueNote
22P-GNDOFFSTOP
22, 47Continuity : OK
46GNDIOFFSTOP
46, 47Continuity : OK
47GND 2OFFSTOP
47, GNDContinuity : OK
314H SWOFFSTOP
31, 47No continuity
(high, 4L) : OK
444L SWOFFSTOP
44, 47No continuity
(high) and
continuity (4L) :
OK
42AXLE SWONRUN
42, 47Continuity(TOD,
4L) : OKRemove ECU connector and start
the engine. Move the vehicle forth
and back to connect axle surely.
29DIAGOFFSTOP
29 (TOD),
8 (DLC
Connec-
tor)Continuity : OKDLC connector terminal 8
7IND.AONSTOPDCV7 (+), 47
(±)8.0 ~14.5 Vwhen the indicator lamp is turned
off.
20CHECK
TODONSTOPDCV20 (+), 47
(±)8.0 ~14.5 VWhen the indicator lamp is turned
off.
33ABS INONSTOPDCV33 (+), 47
(±)6.0 ~11.0 V
12REFONSTOPDCV12 (+), 47
(±)5 ~9 VConnect ECU
32FRT.(+)ONSTOPDCV32 (+), 47
(±)0.7 ~6 VConnect ECU and move the
vehicle (off one tooth of speed
sensor ring) making sure of
voltage change.
45RR.(+)ONSTOPDCV45 (+), 47
(±)0.7 ~6 VConnect ECU and move the
vehicle (off one tooth of speed
sensor ring) making sure of
voltage change.
13COM(-)ONSTOPDCV13 (+), 47
(±)0VConnect ECU
14VIGONSTOPDCV14 (+), 47
(±)8 ~14.5 V
34VBOFFSTOPDCV34 (+), 47
(±)8.0 ~14.5 V
37BRAKE
SWOFFSTOPDCV37 (+), 47
(±)8 ~14.5 VPress brake pedal
15TPSONSTOPDCV15 (+), 47
(±)PWM duty cycle
10%(MAX) ± 90
%(MIN)Step on the accelerator pedal and
make sure that duty cycle
changes.

4B2±31
DRIVE LINE CONTROL SYSTEM (TOD)
Check
Pin
No.Note Standard Value Measure
between
Pin No. Unit
Scale/
Range Engine
State Ignition
Switch
Position Circuit to be
tested
364WD
OUTOFFSTOP
36, 477 ~12 k
Disconnect battery GND terminal
11EMC(+)OFFSTOP
11, 221.0 ~5.0
Disconnect battery GND terminal
30TOD SW
AONSTOPDCV30 (+), 47
(±)SW: TOD, 4L: 0
V
SW:2H:8.0 ~
14.5 V
43TOD
SWBONSTOPDCV43 (+), 47
(±)SW: 2H,
TOD:0V
SW: 4L: 8.0 ~
14.5V
40LIGHTONSTOPDCV40 (+), 47
(±)SW OFF : 0 V
SW ON : 8.0 ~
14.5 V
19IND BONSTOPDCV19 (+), 47
(±)8.0 ~14.5 VWhen the indicator lamp is turned
off
8IND CONSTOPDCV8 (+), 47
(±)8.0 ~ 14.5 VWhen the indicator lamp is turned
off
27AT POSCONSTOPDCV27 (+), 47
(±)ON:D, 3, 2, 1
OFF:PRNON:8.0 ~ 14.5 V
OFF:0V
41AT POSBONSTOPDCV41 (+), 47
(±)ON:R, N, D, 3
OFF:P, 2, 1ON:8.0 ~ 14.5 V
OFF:0V
28AT POSAONSTOPDCV28 (+), 47
(±)ON:P, R, 3, 2
OFF:N, D, 1ON:8.0 ~ 14.5 V
OFF:0V
2ENG REVONRUNms2, 47Waveform
(PWM)50 ms (1000 rpm)