ISUZU KB P190 2007 Workshop Repair Manual

TRANSFER CONTROL SYSTEM 7D1-17
Item 4WD
lamp 4L lamp Neutral
lamp Check
4WD
lamp 4WD
switch Actu ato r
detection (limit)
switches LS1,
LS2,
LS3. and LS4
1 = on
2 = off Transfer
4WD
switch Transfer
neutral switch SOF
actuator switch Or
Axl e
dummy Remarks
2H start
of
operation On On Off Off 2H
position for 0.1
second 1,1,0,1 Closed Open Closed
Switch
operation sensor
During
operation Blinking
(2HZ) Blinking
(2HZ) Off Off No
operation 1,1,0,1 Closed Open Closed 4L to 4H
while
driving
During
operation (Passing through N) On
Blinking
(2HZ) Off Off No
operation 1,1,0,0 Closed Closed Closed 4L to 4H
through neutral
During
operation (Passing through N) Off
Blinking
(2HZ) Off Off No
operation 0,1,0,0 Closed Closed Closed 4L to 4H
through neutral
During
operation (4H
waiting) Off
Blinking
(2HZ) Off Off No
operation 0,0,1,1 Closed Closed Closed 4L to 4H
while
waiting
During
operation (Axle) Off while
waiting for start of H shift Blinking
(2HZ) while
waiting for start of H shift Off Off
No
operation 0,1,1,1
0,1,1,0
0,0,1,0
1,1,1,0 Closed Open Closed
2H to 4H
while
driving
During
operation (Axle) Blinking
(2HZ) at
end of H shift Off at end
of H shift Off Off No
operation 0,1,1,1
0,1,1,0
0,0,1,0
1,1,1,0 Closed Open Closed
Axle
driving
Axle
waiting
Blinking
(2HZ) Off Off Off No
operation1,0,1,0 Open Open Closed -----
2H Off Off Off Off No
operation1,0,1,0 Open Open Open -----

• Completion of transfer case H-L area and axle shift timing may cause some variation in the 2Hz blinking pattern.


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ISUZU KB P190 2007

7D1-18 TRANSFER CONTROL SYSTEM
Skip operation limitations (4L

TRANSFER CONTROL SYSTEM 7D1-19
Transfer-related indicator lamp and switch function
2H→Neutral →2H
Item 4WD
lamp 4L lamp Neutral
lamp Check
4WD
warning light 4WD
switch Actu ato r
detection (limit)
switches LS1,
LS2,
LS3. and LS4
1 = on
2 = off Transfer
4WD
switch Transfer
neutral switch SOF
actuator switch Or
Axl e
dummy Remarks
2H Off Off Off Off No
operation1,0,1,0 Open Open Open -----
Neutral
start of
operation Off Off Off Off Neutral
position for 10
seconds 1,0,1,0 Open Open Open
Switch
operation sensor
Start of
operation Off Off Blinking
(2HZ) 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) Off Off
Blinking
(2HZ) 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 (Passing through 4H) Off Off
Blinking
(2HZ) Off No
operation 0,0,1,1 Closed Open Closed -----
During
operation (Passing through 4H) Off Off
Blinking
(2HZ) Off No
operation 0,0,0,1
0,1,0,1 Closed Open Closed 4H to 4L
while
driving
During
operation
(N)
Off Off Blinking
(2HZ) Off No
operation
0,0,0,1
0,1,0,1 Closed Closed Closed
4H to 4L
through
neutral
During
operation (N) Off Off
Blinking
(2HZ) Off No
operation 0,1,0,0 Closed Closed Closed Switch
operation sensor
Neutral Off Off On Off No
operation0,1,0,0 Closed Closed Open -----
2H start of
operation Off Off On Off 2H
position for 10
seconds 0,1,0,0 Closed Open Closed
Switch
operation sensor
During
operation (Passing through N) Off
Blinking
(2HZ) Off Off No
operation 0,1,0,0 Closed Closed Closed 4L to 4H
through neutral
During
operation Off Blinking
(2HZ) Off Off No
operation 0,1,0,1
0,0,0,1 Closed Closed Closed 4L to 4H
while
driving

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ISUZU KB P190 2007

7D1-20 TRANSFER CONTROL SYSTEM
Item 4WD
lamp 4L lamp Neutral
lamp Check
4WD
warning light 4WD
switch Actu ato r
detection (limit)
switches LS1,
LS2,
LS3. and LS4
1 = on
2 = off Transfer
4WD
switch Transfer
neutral switch SOF
actuator switch Or
Axl e
dummy Remarks
During
operation (4H
waiting) Off
Blinking
(2HZ) Off Off No
operation 0,0,1,1 Closed Closed Closed 4L to 4H
while
waiting
During
operation (Axle) Blinking
(2HZ) Off Off Off No
operation 0,1,1,1
0,1,1,0
0,0,1,0
1,1,1,0 Closed Open Closed
2H to 4H
while
driving
During
operation (Axle) Blinking
(2HZ) Off Off Off No
operation 0,1,1,1
0,1,1,0
0,0,1,0
1,1,1,0 Open Open Closed
Axle
driving
Axle
waiting
Blinking
(2HZ) Off Off Off No
operation1,0,1,0 Open Open Closed -----
2H Off Off Off Off No
operation1,0,1,0 Open Open Open -----

• Operational restrictions (vehicle speed, engine speed, and transmission position) are applicable to transfer shifts
in both directions (H ←→Neutral ←→L).

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TRANSFER CONTROL SYSTEM 7D1-21
4H

7D1-22 TRANSFER CONTROL SYSTEM
• Operational restrictions (vehicle speed, engine speed, and transmission position) are applicable to transfer shifts
in both directions (H ←→Neutral ←→L).

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TRANSFER CONTROL SYSTEM 7D1-23
4L

7D1-24 TRANSFER CONTROL SYSTEM
Parts Location
RHD
















RTW 78AXF040501


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TRANSFER CONTROL SYSTEM 7D1-25

LHD
















RTW 78AXF040601


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7D1-26 TRANSFER CONTROL SYSTEM

RHD

RTW 78AXF046701


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