Daewoo Musso. Manual - part 305

5D2-22  TRANSFER CASE (TOD)

Check function of TOD control unit.

1. Even A1, A2, A3 and A4 test, if you could not find defect,

it is required to replace TOD control unit on basis of
below phenomena.
a. ”4WD CHECK” lamp illuminates continuously when

ignition “ON”.

b. Shift is not possible even 4H/4L switch operation.
c. Upon diagnosis by Scan-100, it displays on

“impossible communication with TOD control unit”
or fault code “1714, 1715, 1716”.

-  Do occur the above defects?

Yes

No

Replace TOD control
unit
Normal system

A5

Test Stage / Contents

Result

Stage

Test Contents and Procedure

Specified Value

/Yes/No

Countermeasure

TRANSFER CASE (TOD)  5D2-23

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

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Phenomenon

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

1716 codes.

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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

W

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

W

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”

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Phenomenon

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

codes “1721,1722”.

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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

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Charging/
Replace battery

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Replace fuse

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Repair wires