SsangYong Rexton. Service manual - part 595

SSANGYONG Y200

5D2-28 TRANSFER CASE - TOD

Circuit Description

The diagnostic system check is an organized approach
to identifying a problem created by a transfer case
control unit (TOD) malfunction. It must be starting point
for any derivability complaint diagnosis because it
directs the technician to the next logical step in
diagnosing the complaint. Understanding the table and
using it correctly will reduce diagnostic time and prevent
the unnecessary replacement of parts.

Step

Action

Verify the customer’s complaint.
Does it verify the customer’s complaint?

Turn the ignition ON.

Does “4WD CHECK” lamp turns on continuously?
Jump between the terminal A2 of the TOD and
ground.

Does “4WD CHECK” lamp turns on?
1. Turn the ignition OFF.

2. Connect the data diagnosis connector to scan tool

and follow the manual instruction.

3. Turn the ignition ON.
Does the scan tool communicate with TOD?

Check whether the scan tool communicates with other
control units.

Does the scan tool communicate with other control
units?
Repair the diagnostic line between the TOD terminal
A12 and DLC connector 13.

Is the repair complete?
Change the scan tool.

Does the scan tool communicate with other control
units?

1. Replace the TOD.
2. Connect the data diagnosis connector to scan tool.

3. Request the DTC.
Does any DTC display?

Request the DTC with the scan tool.

Does any DTC display?
1. Perform the road test.

2. Recheck any DTC.
Does any DTC display?

Refer to applicable DTC table. Start the lowest DTC
and move another DTC.

Does the DTC identify as a valid DTC?

Yes

Go To Step 2

Go To Step 4

Go To Step 9

Go To Step 6

Go To Step 4

Go To Step 11

Go To the

applicable

DTC table

Go To Step 3

Repair the

bulb and

circuit

Go To Step 5

Go To Step 7

Go To Step 8

Go To Step 10

System OK

Value

TOD CONTROL UNIT DIAGNOSTIC SYSTEM CHECK

TRANSFER CASE - TOD 5D2-29

SSANGYONG Y200

Diagnostic Trouble Code Retention

The first time a fault is detected a DTC is stored in the
TOD’s Non-Volatile memory. This DTC will remain in
memory until the TOD is instructed to erase DTC’s by
SCAN-100. DTC’s will not be erased by disconnecting
power to the TOD.

Diagnostic Trouble Code Assignments

Classification

TOD

EMC

Speed Sensor

Shift Motor

Position Encoder

Fault Code

1714

1715

1716

1721

1722

1731

1732

1733

1734

1735

1736

1741

1742

1743

1750

1751

1752

1753

1754

Description

EEPROM Checksum Fault

TPS Loss of Signal

TPS Out of Range

EMC Open / Short to Battery

EMC Short to ground

Front Speed Sensor Voltage Low

Front Speed Sensor Voltage High

Rear Speed Sensor Voltage Low

Rear Speed Sensor Voltage High

Speed Sensor Reference Voltage Low

Speed Sensor Reference Voltage High

Motor Open / Shorted to Battery

Motor Output Shorted to Ground

Shift System Timeout

General Position Encoder Fault (Invalid Code)

Position 1 Shorted to Ground

Position 2 Shorted to Ground

Position 3 Shorted to Ground

Position 4 Shorted to Ground

DIAGNOSTIC TROUBLE CODES (DTC’s)

SSANGYONG Y200

5D2-30 TRANSFER CASE - TOD

Circuit Description

When the ignition switch turns to ON the transfer case
control unit (TOD) illuminates 4WD CHECK and 4WD
LOW indicator to check bulb operation and turns off
after 0.6 seconds. Then TOD starts self-diagnosis and
illuminate 4WD CHECK indicator when TOD detects
any fault.

Diagnostic Aids

•

If the 4WD CHECK indicator illuminates steadily the
TOD may detect some fault. TOD should be
checked by scan tool to solve the problem.

•

The 4WD CHECK indicator also illuminates steadily
if the terminal B2 of TOD connector is shorted to
ground. The shorted wire or terminals should be
repaired.

Step

Action

1. Turn the ignition switch to OFF.

2. Connect the scan tool to the data link connector

(DLC).

3. Turn the ignition switch to ON and request the DTC.

Does the scan tool display any DTC?

1. Turn the ignition switch to OFF.
2. Disconnect the 18-pin connector from transfer case

control unit (TOD).

3. Turn the ignition switch to ON and check the 4WD

CHECK bulb operation.

Does the 4WD CHECK indicator come on steadily?
Repair any short to ground circuit between terminal A2 of
TOD connector and terminal 31 of cluster.

Is the repair complete?
1. Turn the ignition OFF.

2. Check the pin or terminals for damage or improper

connection.

3. Reconnect all the connectors.
4. Turn the ignition ON.

Does the 4WD CHECK indicator come on steadily?
Replace the TOD.

Is the repair complete?

Yes

Go to the

specific DTC

diagnostic

table

Go to Step 3

System OK

Go to Step 5

System OK

Go to Step 2

Go to Step 4

System OK

Value

4WD CHECK INDICATOR STAYS ON WITH IGNITION SWITCH ON

Test Description

The number(s) below refer to step(s) on the diagnostic
table.

2. This step, along with step 4, checks the short to

ground condition of the wire or terminals.

TRANSFER CASE - TOD 5D2-31

SSANGYONG Y200

Circuit Description

Diagnostic Aids

•

If the 4WD LOW indicator illuminates steadily the
transfer case in 4WD low range and 4H/4L switch
set to 4L. It is normal condition.

•

The 4WD LOW indicator also illuminates steadily if
the terminal B9 of TOD connector is shorted to
ground. The shorted wire or terminals should be
repaired.

4WD LOW INDICATOR STAYS ON WITH IGNITION SWITCH ON

Test Description

The number(s) below refer to step(s) on the diagnostic
table.

2. This step checks for the normal bulb operation.

Value

Step

Action

Check the position of 4H/4L switch.

Does the 4H/4L switch set on 4L?
1. Turn the ignition switch to ON.

2. Set the shift lever to N (neutral).

3. Turn the 4H/4L switch to 4H.
Does the 4WD LOW indicator go off?

1. Turn the ignition switch to ON.

2. Set the shift lever to N (neutral).
3. Turn the 4H/4L switch to 4L.

Does the 4WD LOW indicator go off?
The wiring of 4H/4L switch is reversed. Repair the wiring.

Is the repair complete?

1. Turn the ignition OFF.
2. Check the pin or terminals for damage or improper

connection.

3. Reconnect all the connectors.
4. Turn the ignition ON.

Does the 4WD LOW indicator come on steadily?

Repair any short to ground circuit between terminal B9 of
TOD connector and terminal A13 of cluster.
Is the repair complete?

Replace the TOD.
Is the repair complete?

Yes

Go to Step 2

System OK

Go to Step 4

System OK

Go to Step 6

System OK

Go to Step 3

Go to Step 5

System OK

Go to Step 7

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