Daewoo Nubira User Manual page 334

9B – 24ILIGHTING SYSTEMS
Step
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?
2 Repair the open circuit between fuse F7 and the
backup lamps.
Is the repair complete?
3 Connect an ohmmeter between ground and the neg-
ative terminal at the bulb socket.
Is the resistance equal to the specified value?
4 Replace the faulty backup lamps.
Is the repair complete?
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?
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?
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?
8 Replace the REVERSE switch (neutral safety/back-
up switch in automatic transaxle vehicles).
Is the repair complete?
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?
Backup Lamps Inoperative
Action Value(s) Yes
11–14 v Go to Step 3
System OK
0 W
Go to Step 4
System OK
11–14 v Go to Step 7
System OK
0 W
Go to Step 9
System OK
System OK
No
Go to Step 2
Go to Step 5
Go to Step 6
Go to Step 8
DAEWOO V–121 BL4