Daewoo KORANDO Service Manual page 1198

Inspection and Repair
1. 4H and 4L indicator light inspection
When turn the ignition switch to "ON" position, 4H and
4L indicator light will turn on for 0.6 second and will turn
off immediately.
Notice
If indicator light does not turn on, check bulb, wiring harness
and TCCU.
2. TCCU inspection
Pin No.
J1 - 7
J1 - 8
J1 - 13
J1 - 14
J1 - 15
J1 - 16
J1 - 17
J1 - 23
Notice
DC 12V for the TCCU operation should be maintained.
In case of J1-8 and J1-15, indicator light will turn on for 0.6
second when turn the ignition switch ON.
If 4H and 4L indicator lights remain turned on when turn the
ignition switch on or during driving, perform the TCCU
diagnosis.
TRANSFER CASE (PART TIME 4408) 5D1-37
Operation Condition
4H or 4L
2H
4H indicator light ON
4H indicator light OFF
2H or 4H
4L
Clutch pedal applied
Clutch pedal released
4L indicator light ON
4L indicator light OFF
Motor OFF
Motor ON
Motor OFF
Motor ON
Auto locking hub ON
Auto locking hub OFF
Voltage(V)
4.75 - 5.35
0 - 0.50
< 1.00
> 11.00
4.75 - 5.35
0 - 0.50
< 0.50
> 11.00
< 1.00
> 11.00
< 1.00
> 11.00
< 1.00
> 11.00
> 11.00
< 1.00