Daewoo Nubira Owner's Manual page 493

9B – 14ILIGHTING SYSTEMS
Step
1 Check fuses EF34, EF30, EF25, EF31, EF26, and
EF24.
Is any fuse blown?
2
1. Check for a short circuit and repair if neces-
sary.
2. Replace the fuse.
Is the repair complete?
3
1. Turn the low–beam headlamps ON.
2. Check the voltage at fuses EF24 and EF25.
3. Check the voltage at fuses EF21 and EF22
with high beams selected.
Is the voltage equal to the specified value?
4
1. Turn the low–beam headlamps ON.
2. Check the voltage at the headlamp connector
terminal 5.
3. Turn the high–beam headlamps ON.
4. Check the voltage at headlamp connector ter-
minal 4.
Does the battery voltage available at the headlamps
equal the value specified?
5 Repair the open circuit between fuses EF30, EF25,
EF31, and EF26 and the headlamps.
Is the repair complete?
6 Use an ohmmeter to check between ground and the
headlamp connector terminal 6.
Is the resistance equal to the specified value?
7 Repair the ground circuit.
Is the repair complete?
8
1. Replace the faulty headlamps.
2. Check the charging system to make sure that
charging voltage is not excessively high. Re-
pair if necessary.
Is the repair complete?
9 Use a voltmeter to check for power to fuses EF34
and EF29.
Is the voltage equal to the specified value?
10 Repair the power supply circuit to fuses EF34 and
EF29.
Is the repair complete?
11 Temporarily substitute the illumination relay in place
of the headlamp relay.
Do the headlamps operate with the substituted
relay?
12 Install the illumination relay in its original position,
and install a new headlamp relay.
Is the repair complete?
13
1. Return the illumination relay to its original posi-
tion, but do not install the headlamp relay.
2. Use a voltmeter to check the headlamp relay
connector for terminal 30.
Does the voltmeter indicate the value specified?
Action Value(s) Yes
Go to Step 2
System OK
11–14 v Go to Step 4
11–14 v Go to Step 6
System OK
0 W
Go to Step 8
System OK
System OK
11–14 v Go to Step 11
System OK
Go to Step 12
System OK
11–14 v Go to Step 15
No
Go to Step 3
Go to Step 9
Go to Step 5
Go to Step 7
Go to Step 10
Go to Step 13
Go to Step 14
DAEWOO V–121 BL4