Daewoo Nubira. Manual - part 87

9B – 22

I

LIGHTING SYSTEMS

DAEWOO V–121 BL4

Stoplamps Do Not Work

Step

Action

Value(s)

Yes

No

1

Check fuse EF24.
Is fuse EF24 blown?

Go to Step 2

Go to Step 3

2

1.  Check for a short circuit and repair if neces-

sary.

2.  Replace the fuse.

Is the repair complete?

System OK

3

1.  Depress the brake pedal.
2.  With the brake pedal depressed, check the

positive terminals of the bulb sockets with a
test lamp.

Does the test lamp illuminate?

Go to Step 4

Go to Step 6

4

Connect an ohmmeter between ground and the sto-
plamp ground terminal.
Is the resistance equal to the specified value?

0 

W

Go to Step 6

Go to Step 5

5

Repair the ground circuit.
Is the repair complete?

System OK

6

1.  Disconnect the wiring connector from the bra-

kelamp switch.

2.  Press the brake pedal.
3.  Use an ohmmeter to check the continuity be-

tween terminals 2 and 1 of the stoplamp
switch.

Is the resistance equal to the specified value?

0 

W

Go to Step 8

Go to Step 7

7

Replace the brakelamp switch.
Is the repair complete?

System OK

8

1.  Disconnect the stoplamp switch electrical con-

nector.

2.  Check the voltage at terminal 2.

Does the voltmeter show the specified value?

11–14 v

Go to Step 10

Go to Step 9

9

Repair the open circuit between the fuse EF24 and
the stoplamp switch.
Is the repair complete?

System OK

10

Repair the open circuit between the stoplamp switch
and the stoplamps.
Is the repair complete?

System OK

 

LIGHTING SYSTEMS  9B – 23

DAEWOO V–121 BL4

Center High–Mounted Stoplamp (CHMSL) Does Not Work

Step

Action

Value(s)

Yes

No

1

Check the stoplamps.
Do the stoplamps work?

Go to Step 3

Go to Step 2

2

Repair the stoplamps.
Does the center high–mounted stoplamp (CHMSL)
work after the stoplamps have been repaired?

System OK

Go to Step 3

3

1.  Remove the CHMSL bulb.
2.  Visually and physically check the CHMSL bulb.

Is the lamp bulb defective?

Go to Step 4

Go to Step 5

4

Replace the CHMSL bulb.
Is the repair complete?

System OK

5

1.  Disconnect the CHMSL connector.
2.  Use an ohmmeter to measure the resistance

between ground and the BLK wire in the
CHMSL connector.

Is the resistance equal to the specified value?

0 

W

Go to Step 7

Go to Step 6

6

Repair the open circuit between ground and the BLK
wire in the CHMSL connector.
Is the repair complete?

System OK

7

Repair the open circuit between the stoplamp switch
and the CHMSL.
Is the repair complete?

System OK

 

9B – 24

I

LIGHTING SYSTEMS

DAEWOO V–121 BL4

Backup Lamps Inoperative

Step

Action

Value(s)

Yes

No

1

1.  Block the wheels.
2.  Apply the parking brake.
3.  Turn the ignition ON.
4.  Put the transaxle in REVERSE.
5.  Remove one of the backup lamps from its

socket.

6.  Test the lamp socket positive terminal with a

voltmeter.

Is the voltage equal to the specified value?

11–14 v

Go to Step 3

Go to Step 2

2

Repair the open circuit between fuse F7 and the
backup lamps.
Is the repair complete?

System OK

3

Connect an ohmmeter between ground and the neg-
ative terminal at the bulb socket.
Is the resistance equal to the specified value?

0 

W

Go to Step 4

Go to Step 5

4

Replace the faulty backup lamps.
Is the repair complete?

System OK

5

1.  Install the backup lamps.
2.  Disconnect the electrical connector at the re-

verse switch. (On automatic transaxle vehicles,
disconnect the neutral safety/backup switch).

3.  Turn the ignition ON.
4.  Put the transaxle in REVERSE.
5.  Use a voltmeter to check the reverse switch

terminal 1. (On automatic transaxle vehicles,
test terminal B of the neutral safety/backup
switch).

Is the voltage equal to the specified value?

11–14 v

Go to Step 7

Go to Step 6

6

Repair the open circuit between the backup lamps
and the reverse switch (or the neutral safety/backup
switch, if equipped with A/T).
Is the repair complete?

System OK

7

1.  Put the transaxle in REVERSE.
2.  Use an ohmmeter to check the continuity be-

tween reverse switch terminal 1 and terminal 2
terminals B and F on the neutral safety/backup
switch in automatic transaxle vehicles).

Does the continuity between terminals 1 and 2 (ter-
minals D and F with A/T) equal the specified value?

0 

W

Go to Step 9

Go to Step 8

8

Replace the REVERSE switch (neutral safety/back-
up switch in automatic transaxle vehicles).
Is the repair complete?

System OK

9

Repair the ground circuit between the REVERSE
switch (neutral safety/backup switch if equipped
with A/T) and the backup lamps.
Is the repair complete?

System OK

 

LIGHTING SYSTEMS  9B – 25

DAEWOO V–121 BL4

Turn Signal Lamps and Hazard Lamps Do Not Work

Step

Action

Value(s)

Yes

No

1

Check fuses F3 and EF12.
Is either fuse blown?

Go to Step 2

Go to Step 3

2

1.  Check for a short circuit and repair if neces-

sary.

2.  Replace the fuse.

Is the repair complete?

System OK

3

1.  Turn the ignition ON.
2.  Check the voltage at fuse EF12 and F3.

Is the voltage equal to the specified value?

11–14 v

Go to Step 4

Go to Step 7

4

1.  Turn the hazard switch ON.
2.  Remove each of the inoperative lamps from its

socket.

3.  Test each lamp socket positive terminal with a

voltmeter.

Is the voltage equal to the specified value?

11–14 v

Go to Step 5

Go to Step 9

5

At each bulb socket, use an ohmmeter to check the
ground circuit.
Is the resistance equal to the specified value?

[

 0 

W

Go to Step 6

Go to Step 8

6

Replace any faulty turn signal/hazard bulbs.
Is the repair complete?

System OK

7

Repair the power supply circuit to fuses.
Is the repair complete?

System OK

8

Repair the open ground wires.
Is the repair complete?

System OK

9

1.  Turn the hazard lamps ON.
2.  Test blinker unit connector terminal 49a with a

voltmeter.

Is the voltage equal to the specified value?

11–14 v

Go to Step 15

Go to Step 10

10

1.  Turn the hazard lamps ON.
2.  Test blinker unit connector terminal 49 with a

voltmeter.

Is the voltage equal to the specified value?

11–14 v

Go to Step 11

Go to Step 14

11

1.  Disconnect the blinker unit from the connector.
2.  Use an ohmmeter to check between ground

and the connector for terminal 31 of the blinker
connector.

Is the resistance equal to the specified value?

[

 0 

W

Go to Step 13

Go to Step 12

12

Repair the blinker unit ground circuit.
Is the repair complete?

System OK

13

Replace faulty blinker unit.
Is the repair complete?

System OK

14

1.  Disconnect the hazard switch connector.
2.  Check for voltage at terminal 8.
3.  Turn the ignition ON.
4.  Check for voltage at terminal 10.

Does the voltage available at both terminals equal
the specified value?

11–14 v

Go to Step 16

Go to Step 15