2004 ISUZU TF SERIES Workshop Manual

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Page 3633 of 4264

ISUZU TF SERIES 2004 Workshop Manual TRANSFER CONTROL SYSTEM 7D1-7
7B4-PDF3
7B4-PDF4
Neutral indicator (in operation switch panel)
This LED indicates following items.
LED check
Driving status (Neutral)
Operating status (2Hz: Ac

Page 3634 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7D1-8 TRANSFER CONTROL SYSTEM
Transfer controller
Located below the right seat.
RTW37DLF000401

Legend

1. Transfer controller
2. Protector

3. Bolt

Page 3635 of 4264

ISUZU TF SERIES 2004 Workshop Manual TRANSFER CONTROL SYSTEM 7D1-9
Transfer Acutuator
Method of confirming the actuator position detection
(limit) switch
The actuator indicates the continuity condition of combinations
as show

Page 3636 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7D1-10 TRANSFER CONTROL SYSTEM

Method of checking the position detection switch harness
Disconnect the vehicle harness connector on the transfer
controller side and the vehicle harness connecto

Page 3637 of 4264

ISUZU TF SERIES 2004 Workshop Manual TRANSFER CONTROL SYSTEM 7D1-11
Function of Switch and indicator Lamp
Transfer-related indicator lamp and switch function

Item 4WD
lamp 4L lampNeutral
lamp Check
4WD
warning
light 4WD
switc

TRANSFER CONTROL SYSTEM 7D1-11
Function of Switch and indicator Lamp
Transfer-related indicator lamp and switch function

Item 4WD
lamp 4L lampNeutral
lamp Check
4WD
warning
light 4WD
switch Actuator
detection
(limit)
switches
LS1, LS2,
LS3. and
LS4
1 = on
2 = off Transfer
4WD
switch Transfer
neutral
switch SOF
actuator
switch
Or
Axle
dummyRemarks
2H Off Off Off Off No
operation 1,0,1,0 Open Open Open -----
4H start
of
operation Off Off Off Off 4H position
for 0.1
second 1,0,1,0 Open Open Open Switch
operation
sensor
Start of
operation Blinking
(2HZ) Off Off Off No
operation 1,1,1,0
0,0,1,0
0,1,1,0
0,1,1,1 Open Open Open 2H to 4H
while
driving
During
operation
(Synchro) Blinking
(2HZ) Off Off Off No
operation 1,1,1,0
0,0,1,0
0,1,1,0
0,1,1,1 Open Open Open 2H to 4H
using
synchro
and
retrial
During
operation
(Axle
drive) Blinking
(2HZ) Off Off Off No
operation 0,0,1,1 Closed Open Open Axle drive
Axle
waiting Blinking
(2HZ) Off Off Off No
operation 0,0,1,1 Closed Open Open Axle drive
4H On Off Off Off No
operation 0,0,1,1 Closed Open Closed -----
4L start
of
operation On Off Off Off 4L position
for 0.1
second 0,0,1,1 Closed Open Closed Switch
operation
sensor
Start of
operation On Blinking
(2HZ) Off Off No
operation 0,0,0,1
0,1,0,1 Closed Open Closed 4H to 4L
while
driving
During
operation
(N) Off Blinking
(2HZ) Off Off No
operation 0,0,0,1
0,1,0,1 Closed Closed Closed 4H to 4L
through
neutral
During
operation
(N) Off Blinking
(2HZ) Off Off No
operation 0,1,0,0 Closed Closed Closed 4H to 4L
through
neutral
During
operation
(N) Off Blinking
(2HZ) Off Off No
operation 1,1,0,0 Closed Closed Closed 4H to 4L
through
neutral
4L
waiting On Blinking
(2HZ) Off Off No
operation 1,1,0,1 Closed Closed Closed 4H to 4L
while
waiting
4L On On Off Off No
operation 1,1,0,1 Closed Open Closed -----
4H start
of
operation On Off Off Off 4H position
for 0.1
second 1,1,0,1 Closed Open Closed Switch
operation
sensor

Page 3638 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7D1-12 TRANSFER CONTROL SYSTEM
Item 4WD
lamp 4L lampNeutral
lamp Check
4WD
warning
light 4WD
switch Actuator
detection
(limit)
switches
LS1, LS2,
LS3. and
LS4
1 = on
2 = off Transfer

Page 3639 of 4264

ISUZU TF SERIES 2004 Workshop Manual TRANSFER CONTROL SYSTEM 7D1-13
2H to 4H retrial

Item 4WD
lamp 4L lampNeutral
lamp Check
4WD
warning
light 4WD
switch Actuator
detection
(limit)
switches
LS1, LS2,
LS3. and
LS4
1 = on

Page 3640 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7D1-14 TRANSFER CONTROL SYSTEM
Operational limits (4H
4L) (Vehicle speed, engine speed, and transmission position not specified)

Item 4WD
lamp 4L lampNeutral
lamp Check
4WD
warning
lig

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