Daewoo Nubira. Manual - part 86

 

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Daewoo Nubira. Manual - part 86

 

 

9B – 18

I

LIGHTING SYSTEMS

DAEWOO V–121 BL4

FOG LAMPS

Diagnostic Aids
The front fog lamp switch is powered by the headlamp switch, so the fog lamps may not operate if the headlamps or tail-
lamps will not turn ON.

Fog Lamps Do NotWork on Either Side

Step

Action

Value(s)

Yes

No

1

Check the headlamps and the exterior lamps.
Are the headlamps and the exterior lamps working?

Go to Step 3

Go to Step 2

2

Repair the headlamps and exterior lamp systems.
Is the repair complete?

Go to Step 3

3

Check fuse EF20.
Is fuse EF20 blown?

Go to Step 5

Go to Step 4

4

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

sary.

2.  Replace fuse EF20.

Is the repair complete?

System OK

5

Use a voltmeter to check if battery voltage is avail-
able at fuse EF20.
Is the voltage equal to the specified value?

11–14 v

Go to Step 7

Go to Step 6

6

Repair the power supply to fuse EF20.
Is the repair complete?

System OK

7

1.  Disconnect the connectors at the front fog

lamps.

2.  Use an ohmmeter to check the resistance be-

tween ground and the BLK wire at the fog
lamps.

Does the ohmmeter indicate the specified value?

[

 0 

W

Go to Step 9

Go to Step 8

8

Repair the open ground circuit for the front fog
lamps.
Is the repair complete?

System OK

9

1.  With the fog lamps disconnected, turn the front

fog lamps to the ON position.

2.  Turn the headlamps ON.
3.  Check the voltage at the PPL wire at the front

fog lamp connectors.

Is the voltage equal to the specified value?

11–14 v

Go to Step 10

Go to Step 11

10

Replace the fog lamp bulbs.
Is the repair complete?

System OK

11

1.  Temporarily substitute the exterior illumination

relay (taillamp relay) in place of the front fog
lamp relay.

2.  Turn the headlamps ON.
3.  Turn the fog lamps.

Do the front fog lamps work with the substituted
relay?

Go to Step 12

Go to Step 13

12

1.  Return the substituted relay to its original posi-

tion.

2.  Replace the front fog lamp relay.

Is the repair complete?

System OK

LIGHTING SYSTEMS  9B – 19

DAEWOO V–121 BL4

Step

No

Yes

Value(s)

Action

13

1.  Return the substituted relay to its original posi-

tion, but do not reinstall the fog lamp relay.

2.  Use a voltmeter to probe each of the four ter-

minals in the front fog lamp relay socket.

Does one of the four terminals in the relay socket in-
dicate the specified value?

11–14 v

Go to Step 15

Go to Step 14

14

Replace the engine fuse block.
Is the repair complete?

System OK

15

1.  Turn the headlamps ON.
2.  Turn the fog lamps ON.
3.  Probe the front fog lamp relay socket with the

voltmeter.

Besides the terminal which indicated battery voltage
in Step 13, does another terminal in the relay socket
(relay coil positive terminal) now indicate the speci-
fied value?

11–14 v

Go to Step 21

Go to Step 16

16

1.  Turn the headlamps ON.
2.  Check the voltage at the BRN wire at the front

fog lamp switch.

Does the voltmeter indicate the specified value?

11–14 v

Go to Step 18

Go to Step 17

17

Repair the open circuit between the headlamp
switch and the front fog lamp switch.
Is the repair complete?

System OK

18

1.  With the front fog lamp switch disconnected,

connect an ohmmeter between the two termi-
nals of the front fog lamp switch.

2.  Turn the front fog lamp switch to the ON posi-

tion.

Does the ohmmeter indicate the specified value?

0 

W

Go to Step 20

Go to Step 19

19

Replace the front fog lamp switch.
Is the repair complete?

System OK

20

Repair the open circuit between the front fog lamp
switch and the front fog lamp relay.
Is the repair complete?

System OK

21

Check the resistance between ground and the
ground terminal at the fog lamp relay socket.
Does the ohmmeter indicate the specified value?

[

 0 

W

Go to Step 23

Go to Step 22

22

Repair the ground circuit for the front fog lamp relay.
Is the repair complete?

System OK

23

Repair the open circuit between the front fog lamp
relay and the front fog lamps.
Is the repair complete?

System OK

 

REAR COMBINATION LAMPS

Exterior Illumination Lamps Do Not Work

9B – 20

I

LIGHTING SYSTEMS

DAEWOO V–121 BL4

Step

Action

Value(s)

Yes

No

1

Check the headlamps.
Do the headlamps work?

Go to Step 3

Go to Step 2

2

Repair the headlamps.
After the headlamps have been repaired, are the
rear combination lamps still inoperative?

Go to Step 3

System OK

3

1.  Turn the illumination lamps ON.
2.  Use a voltmeter to check voltage at the bulb

socket positive terminal.

Is the voltage equal to the specified value?

11–14 v

Go to Step 4

Go to Step 7

4

Connect an ohmmeter between ground and the
lamp socket negative terminal.
Is the resistance equal to the specified value?

0 

W

Go to Step 6

Go to Step 5

5

Repair the ground circuit for the lamps.
Is the repair complete?

System OK

6

Replace the faulty bulbs.
Is the repair complete?

System OK

7

Check fuses EF20 and EF21.
Is either of the fuses blown?

Go to Step 8

Go to Step 9

8

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

sary.

2.  Replace the fuse.

Is the repair complete?

System OK

9

1.  Temporarily substitute the headlamp relay in

place of the illumination relay.

2.  Turn the illumination lamps ON.

Do the taillamps illuminate?

Go to Step 10

Go to Step 11

10

1.  Return the headlamp relay to its original posi-

tion.

2.  Replace the illumination relay.

Is the repair complete?

System OK

11

1.  Remove the illumination relay.
2.  Use a voltmeter to check the illumination relay

socket at connector terminal 87.

Is the voltage equal to the specified value?

11–14 v

Go to Step 13

Go to Step 12

12

Replace the engine fuse block.
Is the repair complete?

System OK

13

With the illumination relay removed, use a voltmeter
to check the illumination relay socket at connector
terminal 86.
Is the voltage equal to the specified value?

11–14 v

Go to Step 14

Go to Step 12

14

With the illumination relay removed, connect an
ohmmeter between ground and connector terminal
85.
the resistance equal to the specified value?

[

 0 

W

Go to Step 15

Go to Step 17

15

1.  Reinstall the illumination relay.
2.  Turn the illumination lamps ON.
3.  Check the voltage at EF20 and EF21.

Is the voltage equal to the specified value?

11–14 v

Go to Step 16

Go to Step 12

LIGHTING SYSTEMS  9B – 21

DAEWOO V–121 BL4

Step

No

Yes

Value(s)

Action

16

Repair the open circuit between the fuses EF 21 and
EF20 and the illumination lamps.
Is the repair complete?

System OK

17

1.  Disconnect the headlamp switch connector C2.
2.  Connect a fused jumper wire between ground

and terminal 6 of connector C2 (instrument
harness side).

Do the illumination lamps turn ON with the jumper in
place?

Go to Step 19

Go to Step 18

18

Repair the open circuit between terminal 85 of the il-
lumination relay and terminal 6 of headlamp switch
connector C2.
Is the repair complete?

System OK

19

1.  Disconnect headlamp switch connector C2.
2.  On the disconnected switch, select the illumi-

nation lamp ON position.

3.  At the switch side of the connector C2, use an

ohmmeter to check resistance between termi-
nal 3 and terminal 6.

Is the resistance equal to the specified value?

[

 0 

W

Go to Step 20

Go to Step 21

20

Repair the open circuit between headlamp switch
connector C2 terminal 3 and ground.
Is the repair complete?

System OK

21

Replace the headlamp switch.
Is the repair complete?

System OK

 

 

 

 

 

 

 

 

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