Daewoo MUSSO Service Manual page 1230

DIAGNOSIS
Malfunction interior TOD control unit ; fault code
1714
Phenomenon
1. When ignition "ON", "4WD CHECK" lamp illuminates
continuously.
2. On diagnosis by SCAN-100, it displays fault code "1714".
Cause ; Error of EEPROM checksum in TOD control unit
Stage
Check power supply for TOD control unit.
1. Disconnect 30 pin connector from TOD control unit.
2. Ignition "ON".
A1
3. Using multi-tester, measure voltage between pin 5(+)
and 17/18 (-).
- Specified value
- Measured value is within specified range ?
Check connection status in TOD control unit connector.
1. Check connection status.
- Is it connected exactly?
2. In case of mal-connection, connect tightly then perform
the follows.
A2
a. Delete fault code using Scan-100.
b. Ignition "OFF".
c. Ignition "ON".
d. Diagnose by Scan-100.
- Does it display fault code "1714"?
Check short of 10A fuse (fuse No.20).
1. Detach No.20 fuse from engine room fuse box.
2. Check the existence of short.
A3
- Is fuse normal?
Check ground of TOD control unit.
1. Ignition "ON".
2. Check voltage between 4/19 (+) pin and 17/18 (-)
using multi-tester (keep connection status).
- Specified value (battery is good)
A4
- Measured value
3. Check short between 17/18 pin and body after
disconnect 30 pin connector.
- Is resistance "¥"?
Test Stage / Contents
Test Contents and Procedure
TRANSFER CASE (TOD) 5D2-21
Result
Countermeasure
Specified Value
/Yes/No
11-14 Vdc
Yes Perform A2 stage
No Perform A3 stage
Yes Perform A3 stage
No Perform A2 stage
Yes Perform A3 stage
No Normal system
Yes Perform A4 stage
No Replace fuse, then
perform A1 stage
12Vdc (battery
voltage)
Yes Perform A4-3 stage
No Replace TOD control
unit
Repair ground wiring
Yes
Ground is O.K.,
No
perform A5 stage