Daewoo Nubira Owner's Manual page 429

7A – 8IHEATING AND VENTILATION SYSTEM
Step
7
1. Turn the ignition ON.
2. Turn the blower motor switch to 4.
3. Check the blower motor ground.
Is ground OK?
8 Repair the blower motor ground.
Is the repair complete?
9 Check the motor connector with a 12–volt test light.
Does the test light come on?
10 Repair the open in the feed wire from the resistor
block to the blower motor.
Is the repair complete?
11 Use the 12–volt test light to check the power feed
terminal on the blower speed switch.
Does the light come on?
12 Replace the blower speed switch.
Is the repair complete?
13 Repair the open in the power wire from the blower
speed switch to the fuse panel.
Is the repair complete?
14 Does the blower fail to operate at speed 4?
15 Check fuse EF2 in the engine fuse block.
Is the fuse blown?
16
1. Turn the ignition ON.
2. Turn the blower motor switch to 4.
3. Use a short detector to locate the following
possible shorts:
S From the engine fuse panel to the blower
HI relay.
S From the blower HI relay to the blower mo-
tor.
4. Repair any short.
5. Replace the EF2.
Is the repair complete?
17
1. Turn the ignition ON.
2. Turn the blower motor switch to 4.
3. Check for 12 volts on the blower HI relay coil
terminal from the blower speed switch terminal
A2.
Is this voltage present?
18 Replace the blower speed switch.
Is the repair complete?
19
1. Turn the ignition OFF.
2. Check for opens in the following locations:
S Fuse EF2 to the blower HI relay.
S Blower speed switch to the blower HI relay.
S Blower HI relay to ground.
S Blower HI relay to the blower motor.
3. Repair any opens.
Is the repair complete?
Action Value(s) Yes
Go to Step 9
System OK
Go to Step 10
System OK
Go to Step 12
System OK
System OK
Go to Step 15
Go to Step 16
System OK
Go to Step 18
System OK
System OK
No
Go to Step 8
Go to Step 11
Go to Step 13
Go to Step 21
Go to Step 17
Go to Step 19
Go to Step 20
DAEWOO V–121 BL4