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
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