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
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