
9L – 6IGLASS AND MIRRORS
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
81. Turn the ignition OFF.
2. Disconnect the outside rearview mirror electri-
cal connector.
3. Use an ohmmeter to measure the resistance
between terminal 8 (BLK) of the outside rear-
view mirror connector and ground.
Does the ohmmeter indicate the specified value? 0 ΩGo to Step 10 Go to Step 9
9Repair the open ground circuit for the outside rear-
view mirror.
Is the repair complete?–System OK–
10Replace the defective outside rearview mirror.
Is the repair complete?–System OK–
ELECTRIC CONTROL OUTSIDE REARVIEW MIRRORS
Electric Control Outside Rearview Mirrors Do Not Adjust
StepActionValue(s)YesNo
1Check fuse F8.
Is fuse F8 blown?–Go to Step 2 Go to Step 3
21. Check for a short circuit and repair it, if neces-
sary.
2. Replace fuse F8.
Is the repair complete?–System OK–
31. Turn the ignition ON.
2. Check the voltage at fuse F8.
Is the voltage at F8 equal to the specified value?11–14 vGo to Step 5 Go to Step 4
4Repair the open power supply circuit for fuse F8.
Is the repair complete?–System OK–
5Check the electric control outside rearview mirrors.
Are both electric control outside rearview mirrors in-
operative?–Go to Step 6 Go to Step 13
61. Remove the retaining screw for the electric
control outside rearview mirror and power win-
dow switch assembly.
2. Lift the switch assembly so that the connectors
on the underside are visible.
Is the connector secured to the electric control out-
side rearview mirror switch?–Go to Step 8 Go to Step 7
7Connect the connector to the electric control outside
rearview mirror switch.
Is the repair complete?–System OK–
8Use an ohmmeter to check the continuity between
terminal 6 (BLK) of the electric control outside rear-
view mirror switch connector and ground.
Does the ohmmeter indicate the specified value? 0 ΩGo to Step 10 Go to Step 9
9Repair the open ground circuit for the electric control
outside rearview mirror switch.
Is the repair complete?–System OK–

9L – 8IGLASS AND MIRRORS
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
151. Remove the retaining screw for the electric
control outside rearview mirror and power win-
dow switch assembly.
2. Lift the switch assembly so that the connectors
on the underside are visible.
3. Leave the electric control outside rearview mir-
ror disconnected, but do not disconnect the
mirror switch connector.
4. Turn the ignition ON.
5. At the electric control outside rearview mirror
switch connector, backprobe to measure the
voltage between terminal 4 (GRY) and terminal
6 (LT GRN if testing the left side or GRN/BLK if
testing the right side).
6. Operate the in/out adjustment on the switch,
and record the voltage indicated in each switch
position.
7. Connect a voltmeter between terminal 4 (GRY)
and terminal 7 (WHT if testing the left side or
RED/WHT if testing the right side.
8. Operate the up/down adjustment on the switch,
and record the voltage indicated in each switch
position.
Does the voltmeter indicate the specified voltage for
each test, with the polarity reversing when the switch
was changed from in to out or up to down?11–14 vGo to Step 16 Go to Step 12
16Repair the open circuit between the electric control
outside rearview mirror switch and the electric con-
trol outside rearview mirror connector.
Is the repair complete?–System OK–
FOLDING MIRROR UNIT
StepActionValue(s)YesNo
1Check the folding mirror unit.
Does the folding mirror unit work?–Go to Step 3Go to Step 2
2Check fuse F8.
Is fuse F8 blown?–Go to Step 5 Go to Step 6
31. Check for a short circuit and repair it, if neces-
sary.
2. Replace the fuse.
Is the repair complete?–System OK–
41. On the side of the vehicle which has the mal-
functioning folding mirror unit, remove the black
plastic escutcheon from the trim panel side of
the door.
2. Disconnect the folding mirror unit electrical
connector.
3. Turn the ignition ON.
4. Turn on the folding mirror switch.
5. Use a voltmeter to backprobe terminal 7 (LT
GRN/BLK), 8 (BRN/WHT) at the folding mirror
unit electrical connector.
Does the voltmeter indicate the specified value?11–14 v Go to Step 8 Go to Step 7

GLASS AND MIRRORS 9L – 9
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
5Repair the open circuit between fuse F8 and the fold-
ing mirror unit connector.
Is the repair complete?–System OK–
61. Turn the ignition OFF.
2. Disconnect the folding mirror unit electrical
connector.
3. Use an ohmmeter to measure the resistance
between terminal 6 (BLK) of the folding mirror
unit connector and ground.
Does the ohmmeter indicate the specified value? 0 ΩGo to Step 10 Go to Step 9
7Repair the open ground circuit for the folding mirror
unit.
Is the repair complete?–System OK–
8Replace the defective folding mirror unit.
Is the repair complete?–System OK–

9P – 6IDOORS
DAEWOO V–121 BL4
DIAGNOSIS
POWER WINDOWS
System With Only Front Power Windows, One or Both Windows
are Inoperative
CAUTION : When powering the window motors directly from a battery with jumper wires, make sure one of the
jumper wires contains a fuse. If the jumpers are accidentally touched together, the fuse will prevent sparking
and burns from sudden terminal heating.
Step
ActionValue(s)YesNo
11. Turn the ignition ON.
2. Attempt to operate both power windows.
Is either window working?–Go to
Step 18Go to
Step 2
2Visually inspect the connection at the dual
power window switch.
Is the electrical connector correctly attached
to the switch?–Go to
Step 4Go to
Step 3
3Correctly attach the electrical connector to
the dual power window switch.
Is the repair complete?–System
OK–
41. Disconnect the electrical connector from the
dual power window switch.
2. Turn the ignition ON.
3. Check the voltage at terminal 4 and 5 of the
power window main switch connector.
Is the voltage equal to the specified value?11–14 vGo to
Step 16Go to
Step 5
5Check fuses EF14 and EF9.
Is either fuse blown?–Go to
Step 6Go to
Step 7
61. Check for a short circuit and repair if neces-
sary.
2. Replace the blown fuse(s).
Is the repair complete?–System
OK–
71. Turn the ignition ON.
2. Check the voltages at fuses EF9 and EF14.
Are both voltages equal to the specified val-
ue?11–14 vGo to
Step 9Go to
Step 8
8Repair the power supply to the fuse which did
not indicate battery voltage with the ignition
on.
Is the repair complete?–System
OK–
91. Remove the power window relay.
2. Turn the ignition ON.
3. Check the voltage at terminal 30 and terminal
85 of the power window relay socket. (Termi-
nals of the relay socket can be identified by
the markings on the bottom of the relay.)
Does the voltmeter indicate the specified val-
ue at terminals 30 and 85?11–14 vGo to
Step 11Go to
Step 10
10Repair the open circuit between the fuses and
the power window relay.
Is the repair complete?–System
OK–

9P – 8IDOORS
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
181. Remove the trim panel from a door which
has an inoperative power window.
2. Move a vehicle battery close enough to the
door so that the window motor can be pow-
ered directly from the battery with jumper
wires.
3. Disconnect the the two–pin window motor
connector in the door.
Important : To prevent the fuse in the jumper wire
from blowing, do not touch the jumper wires togeth-
er.
1. Attach a jumper wire between the battery
negative terminal and one of the terminals in
the two–pin window motor connector.
2. Attach a fused jumper wire between the bat-
tery positive terminal and the remaining ter-
minal in the two–pin window motor connec-
tor. Unless the motor is at the end of its trav-
el, the window should move with the jumpers
attached.
3. To move the window in the opposite direc-
tion, reverse the jumper wire connections at
the window motor connector.
Does the power window operate in both direc-
tions when the motor is operated directly from
a battery?–Go to
Step 20Go to
Step 19
19Replace the window motor.
Is the repair complete?–System
OK–
201. Before reconnecting the two–pin window mo-
tor connector, connect an ohmmeter between
the terminals to check the resistance of the
motor.
2. Record the ohmmeter reading for motor re-
sistance.
3. Reconnect the motor connector and reinstall
the door trim panel.
4. Disconnect the electrical connector from the
dual power window switch.
5. At the dual power window switch connector,
use an ohmmeter to check the resistance
between the terminals which lead to the mo-
tor that was tested in Step 15
Is the resistance at the switch connector
approximately equal to the resistance that
was previously measured at the motor con-
nector?–Go to
Step 22Go to
Step 21
21Repair the open circuit between the window
motor and the window switch.
Is the repair complete?–System
OK–
22Replace the power window switch.
Is the repair complete?–System
OK–

DOORS 9P – 9
DAEWOO V–121 BL4
System With Front and Rear Power Windows, One or Both Front
Windows are Inoperative
CAUTION : When powering the window motors directly from a battery with jumper wires, make sure one of the
jumper wires contains a fuse. If the jumpers are accidentally touched together, the fuse will prevent sparking
and burns from sudden terminal heating.
Step
ActionValue(s)YesNo
11. Turn the ignition ON.
2. Attempt to operate each front power window.
Is either window working?–Go to
Step 18Go to
Step 2
2Visually inspect the connection at the power
window main switch.
Is the electrical connector correctly attached
to the main switch?–Go to
Step 4Go to
Step 3
3Correctly attach the electrical connector to
the power window main switch.
Is the repair complete?–System
OK–
41. Disconnect the electrical connector from the
power window main switch.
2. Turn the ignition ON.
3. Check the voltage at terminal 3 and 10 of the
power window main switch connector.
Is the voltage equal to the specified value?11–14 vGo to
Step 16Go to
Step 5
5Check fuses EF14 and EF9.
Is either fuse blown?–Go to
Step 6Go to
Step 7
61. Check for a short circuit and repair, if neces-
sary.
2. Replace the blown fuse(s).
Is the repair complete?–System
OK–
71. Turn the ignition ON.
2. Check the voltages at fuses Ef9 and EF14.
Are both voltages equal to the specified val-
ue?11–14 vGo to
Step 9Go to
Step 8
8Repair the power supply to the fuse which did
not indicate battery voltage with the ignition
on.
Is the repair complete?–System
OK–
91. Remove the power window relay.
2. Turn the ignition ON.
3. Check the voltage at terminal 30 and terminal
86 of the power window relay socket. (Termi-
nals of the relay socket can be identified by
the markings on the bottom of the relay.)
Does the voltmeter indicate the specified val-
ue?11–14 vGo to
Step 11Go to
Step 10
10Repair the open circuit between the fuses and
the power window relay.
Is the repair complete?–System
OK–

DOORS 9P – 11
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
181. Remove the trim panel from the front door
which has an inoperative power window.
2. Move a vehicle battery close enough to the
door so that the window motor can be pow-
ered directly from the battery with jumper
wires.
3. Disconnect the the two–pin window motor
connector in the door.
Important : To prevent the fuse in the jumper wire
from blowing, do not touch the jumper wires togeth-
er.
1. Attach a jumper wire between the battery
negative terminal and one of the terminals in
the two–pin window motor connector.
2. Attach a fused jumper wire between the bat-
tery positive terminal and the remaining ter-
minal in the two–pin window motor connec-
tor. Unless the motor is at the end of its trav-
el, the window should move with the jumpers
attached.
3. To move the window in the opposite direc-
tion, reverse the jumper wire connections at
the window motor connector.
Does the power window operate in both direc-
tions when the motor is operated directly from
a battery?–Go to
Step 20Go to
Step 19
19Replace the window motor.
Is the repair complete?–System
OK–
201. Before reconnecting the two–pin window mo-
tor connector, connect an ohmmeter between
the terminals to check the resistance of the
motor.
2. Record the ohmmeter reading for motor re-
sistance.
3. Reconnect the motor connector and reinstall
the door trim panel.
4. Disconnect the electrical connector from the
power window switch.
5. At the power window main switch connector,
use an ohmmeter to check the resistance
between the terminals which lead to the mo-
tor that was tested in Step 15.
Is the resistance at the main switch connector
approximately equal to the resistance that
was previously measured at the motor con-
nector?–Go to
Step 22Go to
Step 21
21Repair the open circuit between the window
motor and the window switch.
Is the repair complete?–System
OK–
22Replace the power window switch.
Is the repair complete?–System
OK–

9P – 12IDOORS
DAEWOO V–121 BL4
System With Front and Rear Power Windows, One or Both Rear
Windows are Inoperative
CAUTION : When powering the window motors directly from a battery with jumper wires, make sure one of the
jumper wires contains a fuse. If the jumpers are accidentally touched together, the fuse will prevent sparking
and burns from sudden terminal heating.
Step
ActionValue(s)YesNo
11. Turn the ignition ON.
2. Make sure that the window lock position has
not been selected on the power window main
switch.
Is either rear power window working?–Go to
Step 18Go to
Step 2
2Visually inspect the connection at the power
window main switch.
Is the electrical connector correctly attached
to the main switch?–Go to
Step 4Go to
Step 3
3Correctly attach the electrical connector to
the power window main switch.
Is the repair complete?–System
OK–
41. Disconnect the electrical connector from the
power window main switch.
2. Turn the ignition ON.
3. Check the voltage at terminal 3 and 10 of the
power window main switch connector.
Is the voltage equal to the specified value?11–14 vGo to
Step 16Go to
Step 5
5Check fuses EF9 and EF14.
Is either fuse blown?–Go to
Step 6Go to
Step 7
61. Check for a short circuit and repair, if neces-
sary.
2. Replace the blown fuse(s).
Is the repair complete?–System
OK–
71. Turn the ignition ON.
2. Check the voltages at fuses Ef9 and EF14.
Are both voltages equal to the specified val-
ue?11–14 vGo to
Step 9Go to
Step 8
8Repair the power supply to the fuse which did
not indicate battery voltage with the ignition
on.
Is the repair complete?–System
OK–
91. Turn the ignition ON.
2. Remove the power window relay.
3. Check the voltage at terminal 30 and terminal
86 of the power window relay socket. (Termi-
nals of the relay socket can be identified by
the markings on the bottom of the relay.)
Does the voltmeter indicate the specified val-
ue?11–14 vGo to
Step 11Go to
Step 10
10Repair the open circuit between the fuses and
the power window relay.
Is the repair complete?–System
OK–