1998 SSANGYONG MUSSO Workshop Repair Manual

5D2-26 TRANSFER CASE (TOD)
0Vdc
11 - 15Vdc
Ye s
No
2.5W
Ye s
No C3Test Stage / Contents
Result
Stage Test Contents and ProcedureSpecified Value
/Yes/NoCountermeasure
Check resistance of electro-magnetic clutch.
1. Disconnect 30 pin connector from TOD control unit.
2. Measure resistance between pin 3 and 7 in wiring
connector using multi-tester.
- Specified value
- Measured value is within specified range?Perform C4 stage
l0W : short
l¥W : open
C4Check operational voltage of elector-magnetic clutch.
1. Ignition "ON"
2. Measure voltge between pin 3(+) and 17(-)in TOD
control unit connector.
- Specified value 4WD high
4WD low
- Measure value is within specified range ?Replace TOD
control unit
Replace wire

TRANSFER CASE (TOD) 5D2-27
Defect in speed sensor : fault code 1731, 1732,
1733, 1734, 1735,1736
lPhenomenon
1. Upon diagnosis by SCANNER, it displays on fault code
1731, 1732, 1733, 1734, 1735 and 1736.
2. “4WD CHECK” lamp illuminates continuously when
ignition “ON”.
lCause
1. Defect of speed sensor (front, rear).
2. Defect of power supply.
4.75-5.25Vdc
Ye s
No D1
Ye s
No
D2
Ye s
Ye s
Ye s
No D3Test Stage / Contents
Result
Stage Test Contents and ProcedureSpecified Value
/Yes/NoCountermeasure
Check power supply of speed sensor.
1. Ignition “ON” or driving mode
2. Measure supply voltage between pin 16 (+) and 13 (-) in
TOD control unit connector using digital multi-tester.
- Specified value
- Measured value is within specified range ?
Check connection status of connector.
1. Check connection status of speed sensor/clutch coil
connector and TOD control unit connector.
- Does it connect correctly ?
2. In case of bad connection, connect it correctly then
perform the follows:
a. Delete the memorized fault code in control unit by
SCANNER.
b. Ignition “OFF”.
c. Ignition “ON”.
d. Diagnose by SCANNER.
- It does not display fault code.
- It displays one or more fault code among 1731 to
1736.
Check output wave of front and rear speed sensor.
1. Upon driving mode.
2. Check output wave of each speed sensor by SCANNER.
3. Is it normal on output wave ?Perform D3 stage
Perform D2 stage
Perform D3 stage
Perform D2-2 stage
Normal system
Perform D3 stage
Perform D4 stage
Replace speed
sensor then
perform D2-2 stage

5D2-28 TRANSFER CASE (TOD)
Ye s
No D4Test Stage / Contents
Result
Stage Test Contents and ProcedureSpecified Value
/Yes/NoCountermeasure
Check output voltage of front and rear speed sensor.
1. Upon driving mode
2. Measure output voltage of front and rear speed sensor
by multi-tester. Check voltage whether it varies within
specified range.
- Specified value
• Front speed sensor
: Pin 11(+), 13(-) in TOD control unit connector
• Rear speed sensor
: Pin 29(+), 13(-) in TOD control unit connector
- Measure value is within specified range ?Check function of
control unit.
It necessary,
replace then delete
fault codes and re-
diagnose .
Perform D5 stage
Ye s
No
D5
Check short/open in cable.
1. Ignition"OFF"
2. Disconnect TOD control unit connector
3. Make a test for open circuit between pin 11 and 13, 16
and 13, 29 and 13 in wiring connector by multi-tester.
- Is there a resistance of " ¥ " ?
4. Make a test for short between pin 11 and ground 13
and ground, 29 and ground by multi-tester.
- Is there a resistance of " ¥ W " ?Repair wire Perform
D5-4 stge
Ye s
NoWiring short, repair
Perform D3 stage,
then delete fault
codes with
rediagnosis

TRANSFER CASE (TOD) 5D2-29
Shift motor malfunction : Fault code ® 1741,
1742, 1743
lPhenomenon
1. When change the 4H/4L switch from 4H to 4L, ‘4L’
indicator lamp turn off after blinking for a time and then
‘4WD CHECK’ indicator lamp turn on.
2. Fault codes display by diagnosis of SCAN-100 : 1741,
1742, 1743
3. The shifting operation is not occurred when 4H / 4L switch,
is operating.
lCause
Defect in shift motor, improper voltage provided, incorrect
connection in connector, short of wiring.
11-14 V
(Battery voltage)
Ye s
No E1
11-14 V
(Battery voltage)
Ye s
No
Ye s
No
E2
Ye s
No Test Stage / Contents
Result
Stage Test Contents and ProcedureSpecified Value
/Yes/NoCountermeasure
Check the input voltage of shift motor.
1. Turn the ignition switch to “ON” position.
2. Measure the Hi/Low voltage of motor which is located
between No.1/No.14 and No.2/No.15 connector of TOD
control unit with digital Multi-tester or which is located
between No.G connector and body after detaching T/C
motor connector.
- The specified value (When operates 4H/4L switch)
- Measured value is within specified range ?
3. Measure the Hi/Low voltage of motor which is located
between No.2/No.5 and No.1/No.14 connector or which
is located No.B connector and body after detaching T/C
motor connector
- The specified value (When operates 4H/4L switch)
- Measured value is within specified range ?
Check the fault condition of the relevant connector.
1. Check the installation condition of TOD control unit 30pin
connector and T/C shift motor connector.
- Is it installed properly ?
2. If the connector installation is improper, install properly
and then perform follows :
a. Delete the fault code of control unit by scan scope
b. Turn off the ignition switch
c. Turn on the ignition switch
d. Re-diagnosis of system
It displays one or more fault code among 1741 to 1743.Perform E1-3 stage
Perform E2 stage
Perform E4 stage
Perform E2 stage
Perform E3 stage
Perform E2-2 stage
Perform E3 stage
Normal system

5D2-30 TRANSFER CASE (TOD)
Ye s
No
Ye s
No
Ye s
No E3
Ye s
No E4
Ye s
No E5Test Stage / Contents
Result
Stage Test Contents and ProcedureSpecified Value
/Yes/NoCountermeasure
Check the wiring of shift motor whether it is shorted or not.
1. Turn off the ignition switch.
2. Detach the 30pin connector from TOD control unit
3. Perform short test between the wiring connector No.1/
No.14 and No.2/No.5.
- Is there resistance of 0W ?
4. Perform the short test between No.1/No.14 Connector
and body, No2/No.15 connector and body.
- Is there resistance of 0W ?
5. Execute E1 stage to check whether wiring is shorted
between Hi-Low motor and LOW-HI motor.
- Is the provided voltage proper ?
Check the resistance of shift motor
1. Turn off the ignition switch.
2. Measure the resistance between No.1/No.14 and No.2/
No.15 connector after detaching 30pin connector of TOD
control unit Or, check the resistance between No.G and
No.B after detaching motor connector of T/C side.
- Specified value
- Measured value is within specified range ?
Execute the test after detaching shift motor, when the fault
is not solved after executing E1~E4 stage.
1. Detach the motor connector from T/C.
2. Remove the shift motor.
3. Connect motor connector with the removed shift motor.
4. Operate the 4H/4L switch.
- Does motor rotate ?Hi-Low motor and
Lo-Hi wiring are
shorted each other.
Repair or replace.
Perform E3-4 stage.
Related wiring is
shorted with ground.
Repair or replace.
Perform E3-5 stage.
Perform E4 stage.
Wiring is shorted.
Repair or replace.
The defective T/C or
perform E5 stage.
Replace the shift
motor.
Check and fix due to
the defective T/C
ass’y.
Replace the motor
or delete fault code
and rediagnosis
system.

TRANSFER CASE (TOD) 5D2-31
Position incoder and position 1,2,3,4 malfunction
:Fault code®1750,1751,1752,1753, 1754
lPhenomenon
The ‘4WD check’ lamp can not go out when the ignition
switch positioned to ‘ON’.
The fault code display 1750, 1751, 1752, 1753, 1754 by
diagnosis of SCAN-100.
lCause
The portion of position incoder malfunction, each wiring is
shorted with ground.
Ye s
No
F1
Ye s
No
Ye s
No F2Test Stage / Contents
Result
Stage Test Contents and ProcedureSpecified Value
/Yes/NoCountermeasure
Check the installation condition of connector.
1. Check the installation condition between 30 pin connector
of TOD control unit and motor connector of T/C portion.
- Is it installed properly ?
2. If the connector installation is improper, install properly
and then execute follow procedure.
a. Delete the all fault code from memory by scan scope.
b. Turn off ignition switch.
c.Turn on ignition switch.
d. Rediagnosis the system.
- Does the fault codes display one or more among
1750 ~ 1754.
Check the each wiring whether it is shorted or not.
1. Turn off the ignition switch
2. Detach the 30 pin connector of TOD control unit.
3. Perform short test each connector, No.27 (Position 1),
No.10 (Position 2), No.28 (Position 3),No.30 (Position
4), No.6 with body.
- Is there resistance of 0W?Perform F2 stage
Perform F1-2 stage
Perform F2 stage
Normal system
Repair or replace
due to wiring short
1. Replace the
motor Ass’y due
the defective
position incoder
portion.
2. And then, perform
F1-2 stage.

5D2-32 TRANSFER CASE (TOD)
lPhenomenon
“4L” lamp on cluster continuous blinking and can not go off,
when operated 4H/4L switch as 4L« 4H.
lCause
Shifting failure.
1. Stop the vehicle
2. Return the 4H/4L switch to first position (before
operating).
- The blinking of 4L indicator lamp is stopped.
Note
If the first position before switch operating is ‘4L’,
lamp goes on after stopping blink, otherwise it
is ‘4H’ lamp goes off.
3. Reoperate 4H/4L switch to 4H«4L on the below
condition.
• Positioned Auto T/M to neutral.
• At this time, keep the neutral position for 2 second.
• Stop the vehicle (The R.P.M of front & Rear propeller
shaft is below 80).
4. ‘4L’ lamp blinks based on 0.3 second.
5. When the shifting is engaged, the blinking of ‘4L’ lamp
is stopped.
-4H®4L : goes on ‘4L’ lamp
-4L®4H : goes on ‘4L’ lamp
6. When the ‘4L’ indicator lamp continuous blinking,
repositioned to first position and diagnose the system
and then fix it.Ye s
No
G1
Ye s
No Test Stage / Contents
Result
Stage Test Contents and ProcedureSpecified Value
/Yes/NoCountermeasure
Perform 2 stage
Diagnose TOD
control unit
Normal system
Perform system test
Auto T/N positioned
to neutral
Check/Replace the
relay

TRANSFER CASE (TOD) 5D2-33
9 - 16 Vdc
6 - 16 Vdc
2 mA
1 A
7 A
20 A
Removal & Installation Procedure
1. Turn the ignition switch to "OFF" position.
2. Remove 30 pin connector from TOD control unit.
3. Unscrew 2 bolts (1).
Installation Notice
1 Bolt (M6 x 16, 2pieces)................ 9-11 Nm
2 TOD control unit
MAINTENANCE AND REPAIR
ON-VEHICLE SERVICE
TOD CONTROL UNIT
TOD Electric Characteristics
Voltage
Parasitic Current
(Under max. operation Voltage)
Max. Operation Current
(Under max. operation Voltage)Normal Operation Range
CAN communication Operation Range
Ignition “OFF”
Ignition “ON”
Motor “OFF”
Motor “ON”
4. Installation should follow the removal procedure in the
reverse order.
Notice
When replace TOD control unit, it is required to make a
coding correspondent with vehicle specification.
Tightening Torque 9 - 11 Nm