Daewoo KORANDO Service Manual page 1223

Defect in speed sensor : fault code 1731, 1732,
1733, 1734, 1735,1736
Phenomenon
1. Upon diagnosis by SCANNER, it displays on fault code
1731, 1732, 1733, 1734, 1735 and 1736.
2. "4WD CHECK" lamp illuminates continuously when
ignition "ON".
Cause
1. Defect of speed sensor (front, rear).
2. Defect of power supply.
Stage
Check power supply of speed sensor.
1. Ignition "ON" or driving mode
2. Measure supply voltage between pin 16 (+) and 13 (-) in
D1
TOD control unit connector using digital multi-tester.
- Specified value
- Measured value is within specified range ?
Check connection status of connector.
1. Check connection status of speed sensor/clutch coil
connector and TOD control unit connector.
- Does it connect correctly ?
2. In case of bad connection, connect it correctly then
perform the follows:
D2
a. Delete the memorized fault code in control unit by
SCANNER.
b. Ignition "OFF".
c. Ignition "ON".
d. Diagnose by SCANNER.
- It does not display fault code.
- It displays one or more fault code among 1731 to
1736.
Check output wave of front and rear speed sensor.
1. Upon driving mode.
2. Check output wave of each speed sensor by SCANNER.
D3
3. Is it normal on output wave?
Test Stage / Contents
Test Contents and Procedure
TRANSFER CASE (TOD) 5D2-25
Result
Countermeasure
Specified Value
/Yes/No
4.75-5.25Vdc
Yes Perform D3 stage
No Perform D2 stage
Yes Perform D3 stage
No Perform D2-2 stage
Yes Normal system
Yes Perform D3 stage
Yes Perform D4 stage
No Replace speed
sensor then
perform D2-2 stage