SsangYong Musso. Manual - part 519

TRANSFER CASE (TOD)  5D2-23

Error of signal in engine throttle position ; fault
code 1715, 1716

!

Phenomenon

1. Upon diagnosis by SCAN-100, it display on 1715,

1716 codes.

!

Cause

1. Bad communication line between E/G ECU and CAN.

2. Defect of TOD control unit.

3. Defect of E/G ECU.

Check connection status of connector through CAN
communication line.

1. Check connection of connector.

-

Does connector connect correctly between TOD

control unit and E/G ECU?

2. In case of bad connection, connect correctly then

perform the follows ;
a. Delete the memorized fault code using SCANNER.
b. Ignition  “OFF”.
c. Ignition  “ON”.
d. Diagnose by SCANNER.

- Does it display fault codes “1715” or “1716”.

Yes

No

B1

Yes

No

Check connection status of CAN communication line towards
E/G ECU.

1. Ignition  “OFF”.
2. Disconnect 30 pin connector towards TOD control unit.
3. Measure resistance between pin No.22 and 23 in wiring

connector using multi-tester.
- Specified value
- Measured value is within specified range?

B2

115-125

Ω

Yes

No

Check connection status of CAN communication line towards
TOD control unit.

1. Ignition  “OFF”.
2. Disconnect coupling of E/G ECU (gray, 1-60 pin).
3. Measure resistance between pin No.37 and 38 in

coupling using multi-tester.
- Specified value
- Measured value is within specified range?

B3

115-125

Ω

Yes

No

Test Stage / Contents

Result

Stage

Test Contents and Procedure

Specified Value

/Yes/No

Countermeasure

Perform B2 stage
Perform B1-2 stage

Perform B2 stage
Normal system

Perform B3 STAGE
Perform B4 stage,
check and replace E/
G ECU

Perform B5 STAGE
Replace TOD control
unit

5D2-24  TRANSFER CASE (TOD)

Yes

No

B4

B5

Yes

No

B6

4.75-5.25Vdc

Yes

No

B7

0.3-0.9Vdc
4.6-4.9Vdc

Yes

No

4.6-4.9Vdc
0.3-0.9Vdc

Yes

No

Test Stage / Contents

Result

Stage

Test Contents and Procedure

Specified Value

/Yes/No

Countermeasure

Check CAN communication line by diagnosis of E/G ECU.

1. Diagnose E/G ECU with SCANNER.
2. Does it display on fault code “27” ?

Check power supply and signal output on throttle valve
position sensor (potentiometer) 1,2.

1. Diagnose E/G ECU with SCANNER.

- Fault codes : 104, 105, 108, 109, 119, 185
Does it display on above code ?

Check power supply (5V) of throttle valve position sensor.

1. Ignition  “ON”
2. Measure voltage between pin 112(+) and 84(-) keeping

coupling connection status using multi - tester.
- Specified value
- Measured value is within specified range ?

Check output signal from throttle position sensor 1 and 2.

1. Keep E/G idle status.
2. Measure output voltage between pin 87 (+) and 84 (-)

keeping E/G ECU coupling connection status using multi-
tester. (potentiometer 1)
- Specified value

min. acc. Pedal
max. acc. Pedal

- Measured value is within specified range ?

3. Measure output voltage between pin 85 (+) and 84 (-)

keeping E/G ECU coupling connection status using multi-
tester. (potentiometer 2)
- Specified value

min. acc. Pedal
max. acc. Pedal

- Measured value is within specified range ?

Replace TOD control
unit
Replace throttle body
actuator or check
cable

Perform B1, B2, B3
stages
Perform B5 stage

Perform B6 stage
Replace TOD control
unit or perform A1-
A5 stages

Perform B7 stage
Replace E/G ECU or
perform B1-2 stage
after checking cable.

Perform B7-3 stage
Replace throttle body
actuator or check
cable.

TRANSFER CASE (TOD)  5D2-25

Error in electro - magnetic clutch : fault code
“1721”, “1722”

!

Phenomenon

1. Upon diagnosis by SCAN-100, it displays on fault

codes  “1721,1722”.

!

Cause

1. Defect in electro - magnetic clutch

2. Defect in connector or wiring

- Open or short from EMC to the supply : 1721

- Short EMC to ground : 1722

Yes

No

C1

Yes

No

Yes

No

11-15Vdc

Yes

No

C2

Yes

No

Test Stage / Contents

Result

Stage

Test Contents and Procedure

Specified Value

/Yes/No

Countermeasure

Check relevant connector connection status.

1. Check relevant connector connection status with TOD

control unit.
- Does it connect correctly ?

2. Check connection status of speed sensor and clutch

coil connector (7 pin) in transfer case.
- Does it connect correctly ?

3. In case of bad connection, connect it correctly then

perform the follows :
a. Delete the memorized fault code in control unit with

Scan - 100.

b. Ignition  “OFF”.
c. Ignition  “ON”.
d. Diagnose by SCAN-100

-  Does it display on fault codes “1721,1722” ?

Check supply voltage into electro-magnetic clutch.

1. Ignition  “ON”
2. Measure voltage between pin 4/19(+) and 17/18(-) in

TOD control unit connector.
- Specified value
- Measured value is within specified range ?

3. If the specified value would not be measured, perform

the follows :
a. Check battery voltage (charging condition)
b. Check open circuit on No.13 fuse (20A)
c. Check relevant wires.

-  Is the above 3a, 3b, 3c normal ?

Perform C1-2 stage
Perform C1-3 stage

Perform C2 stage
Normal system

Perform C2 stage
Perform C1-3 stage

Perform C3 stage
Perform C2-3 stage

Perform C3 stage

!

Charging/
Replace battery

!

Replace fuse

!

Repair wires

5D2-26  TRANSFER CASE (TOD)

0Vdc

11 - 15Vdc

Yes

No

2.5

Ω

Yes

No

C3

Test Stage / Contents

Result

Stage

Test Contents and Procedure

Specified Value

/Yes/No

Countermeasure

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

!

0

Ω

 : short

!

∞Ω

 : open

C4

Check 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