ECU DAEWOO NUBIRA 2004 Service Repair Manual

6E – 12ISTEERING WHEEL AND COLUMN
DAEWOO V–121 BL4
Important : In order to install the steering wheel correctly,
match–mark the steering column shaft to the steering
wheel.
6. Remove the steering wheel using the steering
wheel puller KM–210–A.
7. Unclip the contact ring from the steering wheel, if
necessary.
Installation Procedure
1. Clip the contact ring on the steering wheel, if nec-
essary.
2. Align the match marks on the steering wheel and
the steering column shaft.
3. Install the retaining clip and a new steering wheel
nut.
Tighten
Tighten the steering wheel nut to 38 NSm (28 lb–ft).
4. Bend the tabs to secure the retaining clip.
5. Connect the horn leads and install the steering
wheel horn cap.
6. Rotate the steering wheel to allow access to the
steering wheel horn cap screw. Install the horn cap
screw.
7. Rotate the steering wheel to allow access to the
other steering wheel horn cap screw. Install the
horn cap screw.
Tighten
Tighten both steering wheel horn cap screws to 4.5
NSm (40 lb–in).
8. Connect the negative battery cable.

STEERING WHEEL AND COLUMN 6E – 13
DAEWOO V–121 BL4
STEERING WHEEL WITH SIR
Tools Required
KM–210–A Steering Wheel Puller
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the SIR module. Refer to Section 8B, Sup-
plemental Inflatable Restraints.
3. Remove the steering wheel nut and the retaining
clip.
Important : In order to install the steering wheel correctly,
match–mark the steering column shaft to the steering
wheel.
4. Remove the steering wheel using the steering
wheel puller KM–210–A.
5. Unclip the contact ring from the steering wheel, if
necessary.
Installation Procedure
1. Clip the contact ring on the steering wheel, if nec-
essary.
Important : In order to correctly install the steering wheel,
match–mark the steering column shaft to the steering
wheel.
2. Align the match marks on the steering wheel and
the steering column shaft. Turn the signal canceling
cam on the wheel to the left.
3. Install the retaining clip and the steering wheel nut.
Tighten
Tighten the steering wheel nut to 38 NSm (28 lb–ft).
4. Bend the tabs to secure the retaining clip.
5. Install the SIR Module. Refer to Section 8B, Sup-
plemental Inflatable Restraints.
6. Connect the negative battery cable.
IGNITION LOCK CYLINDER AND
SWITCH
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the upper and the lower steering column
cover panel by removing the screws.
3. Disconnect the electrical connector for the immobi-
lizer detection coil.

6E – 20ISTEERING WHEEL AND COLUMN
DAEWOO V–121 BL4
GENERAL DESCRIPTION
AND SYSTEM OPERATION
STEERING WHEEL AND COLUMN
CAUTION : To ensure the energy–absorbing action of
the steering column, it is important to use only the
specified screws, bolts, and nuts, tightened to the
specified torque.
In addition to the steering function, the steering column
provides safety and security.
The energy–absorbing column is designed to compress in
a front–end collision to lessen the chance of driver injury.
The ignition switch and the lock are mounted on the col-
umn, allowing the ignition and steering operations to be
locked to inhibit theft of the car.
The column levers trigger the turn signals, the headlight
beams, and the windshield washer and wipers.The tilt steering column uses telescopic function to allow
the steering wheel to tilt up and down in and out. This en-
ables the driver to adjust the steering wheel to a comfort-
able position.
Notice : Apply a thin coat of lithium grease to all friction
points when reassembling.
The column may be disassembled and reassembled easi-
ly.IGNITION KEY REMINDER
The ignition key reminder alerts the driver that the key is
still in the ignition when the driver attempts to exit the ve-
hicle.
An internal switch in the ignition lock cylinder supplies bat-
tery voltage to the reminder chime module when all of the
following conditions are true:
S The key is in the ignition switch.
S The ignition is OFF.
S The driver’s door is open.
For information on removal and installation of the reminder
chime module, refer to Section 9E, Instrumentation/Driver
Information.

7A – 22IHEATING AND VENTILATION SYSTEM
DAEWOO V–121 BL4
6. Remove the screws that secure the heater/air dis-
tributor case assembly to the firewall on the side of
the heater core pipes.
7. Remove the high–pressure and Low–pressure pipe
from the A/C expansion valve.
8. Remove the evaporator drain hose.
9. Have an assistant support the heater/air distributor
case from inside the vehicle.
10. Remove the screws that secure the heater/air dis-
tributor case assembly to the firewall on the side of
the evaporator.
11. Disconnect the rear duct connector.
Notice : Handle the case carefully to avoid damage to the
mechanical door operating linkage.
12. Remove the heater/air distributor case assembly
from the vehicle.
Installation Procedure
1. Position the heater/air distributor case assembly in
the vehicle.
Notice : Avoid damaging the heater core pipes by making
sure they do not contact the firewall opening.
2. Slowly raise the heater/air distributor case assem-
bly into position against the firewall and hold it in
position while the screws are installed and tight-
ened from the engine side of the firewall.
3. Install the high–pressure and low–pressure pipe.
4. Install the heater/air distributor case assembly
screws at the side of evaporator through the firewall
from the engine compartment side.

HEATING AND VENTILATION SYSTEM 7A – 23
DAEWOO V–121 BL4
Tighten
Tighten the heater/air distributor case assembly
screws to 4 NSm (35 lb–in).
5. Install the heater/air distributor case assembly
screws at the side of the heater core pipes through
the firewall from the engine compartment side.
Tighten
Tighten the heater/air distributor case assembly
screw to 4 NSm (35 lb–in).
6. Install the two heater hoses.
7. Slide the heater hose clamps into position.
8. Connect the rear duct connector.
9. Install the instrument panel and tie–bar. Refer to
Section 9E, Instrumentation/Driver Information.
10. Fill the cooling system. Refer to Section 1D, Engine
Cooling.
11. Connect the negative battery cable.
12. Operate the controls to verify the proper function of
the heating and ventilation systems.
BLOWER MOTOR
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the glove box. Refer to Section 9E, Instru-
mentation/Driver Information.
3. Put the floor carpet aside for preventing stain.
4. Disconnect the blower motor electrical connector
and resistor connector.
5. Remove the screws that secure the motor to the
heater/air distributor case.

7A – 24IHEATING AND VENTILATION SYSTEM
DAEWOO V–121 BL4
6. Remove the motor, the seal, and the shock mount
pads from the heater/air distributor case by gently
pulling the motor straight down and out.
Installation Procedure
1. Install the blower motor and the seal with the shock
mount pads in the heater/air distributor case. Hold
the blower motor in position.
2. Install the screws to secure the blower motor to the
heater/air distributor case.
Tighten
Tighten the blower motor retaining screws to 1.2 NSm
(11 lb–in).
3. Connect the blower motor electrical connector and
resistor connector.
4. Connect the negative battery cable.
5. Confirm that the blower motor operates properly.
6. Replace the glove box. Refer to Section 9E, Instru-
mentation/Driver Information.
HIGH–BLOWER RELAY
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the glove box housing. Refer to Section
9E, Instrumentation/Driver Information.
3. Separate the connector from the bracket.
4. Disconnect the relay from the connector.
Installation Procedure
1. Connect the relay to the connector.
2. Insert the connector to the bracket.
3. Install the glove box. Refer to Section 9E, Instru-
mentation/Driver Information.

MANUAL CONTROL HEATING, VENTILATION AND AIR CONDITIONING SYSTEM 7B – 27
DAEWOO V–121 BL4
7. Remove the air cleaner housing bolts and the air
filter housing assembly.
8. Disconnect the electrical connector at the pressure
transducer.
9. Remove the liquid pipe block–to–expansion valve
retaining nut at the fire wall.
10. Remove the handlamp housing at the left–hand
side. Refer to Section 9B, Lighting Systems.
11. Remove the liquid pipe block–to–receiver dryer re-
taining nut.
12. Remove the bolts which secure the support clamps
that hold the liquid pipe to the vehicle.
13. Remove the liquid pipe from the vehicle.
14. Cap the opening at the receiver–dryer to prevent
contamination.
Installation Procedure
1. Position the liquid pipe into the vehicle.
2. Install the liquid pipe support clamp bolts.
Tighten
Tighten the liquid pipe support clamp bolts to 4 NSm
(35 lb–in).

MANUAL CONTROL HEATING, VENTILATION AND AIR CONDITIONING SYSTEM 7B – 33
DAEWOO V–121 BL4
RECEIVER–DRYER
Removal Procedure
1. Disconnect the negative battery cable.
2. Discharge and recover the refrigerant. Refer to
”Discharging, Adding Oil, Evacuating, and Charging
Procedures for A/C System” in this section.
3. Remove the condenser. Refer to ”Condenser” in
this section.
4. Remove the receiver–dryer–to–condenser pipe
block bolt.
5. Loosen the bolt that secures the receiver–dryer
band clamp.
Notice : Hold the receiver–dryer–to–condenser pipe to
support it so that the pipe is not damaged while being re-
moved from the receiver–dryer.
6. Remove the receiver–dryer by sliding it up and out
of the band clamp.
7. Cap all open connections to prevent contamination.
8. Drain the oil from the receiver–dryer into a graduat-
ed container. Record the amount of oil drained.
9. Discard the used oil.
Installation Procedure
Important : Do not uncap the new receiver–dryer until just
prior to installation.
1. Add the new oil to the new receiver–dryer. Use the
exact amount of oil that you drained from the old
receiver–dryer.
2. Install new O–rings onto the two pipes that connect
to the receiver–dryer.
3. Install the receiver–dryer into the band clamp. Sup-
port the receiver–dryer–to–condenser pipe while
pushing the receiver–dryer downward until the pipe
is fully installed.
4. Tighten the bolt on the band clamp.
Tighten
Tighten the band clamp bolt to 5 NSm (44 lb–in).
5. Install the receiver dryer–to–condenser pipe block
bolt.
Tighten
Tighten the receiver–dryer–to–condenser pipe block
bolt to 5 NSm (44 lb–in).
6. Install the condenser. Refer to ”Condenser” in this
section.
7. Evacuate and recharge the A/C system. Refer to
”Discharging, Adding Oil, Evacuating, and Charging
Procedures for A/C System” in this section.

7B – 44IMANUAL CONTROL HEATING, VENTILATION AND AIR CONDITIONING SYSTEM
DAEWOO V–121 BL4
SHAFT SEAL REPLACEMENT
Tools Required
J–5403 Snap Ring Pliers
J–9553–1 O–Ring Remover
J–23128–A Seal Seat Remover/Installer
J–33011 O–Ring Installer
J–34614 Shaft Seal Protector
Important : A shaft seal should not be replaced because
a small amount of oil is found on the adjacent surface. The
seal is designed to leak some oil for lubrication purposes.
A shaft seal should be changed only when a large amount
of sprayed oil is found and then only after actual refrigerant
leakage is found by using an approved leak detection pro-
cedure. Refer to ”Leak Testing the Refrigerant System” in
this section.
Should a compressor shaft seal ever have to be replaced,
the receiver–dryer in this system must also be removed
from the vehicle. The oil in the receiver–dryer must then
be drained, measured and replaced. Refer to ”Discharg-
ing, Adding Oil, Evacuating, and Charging Procedures for
A/C System” in this section.
Removal Procedure
1. Disconnect the negative battery cable.
2. Recover the refrigerant. Refer to ”Discharging, Add-
ing Oil, Evacuating, and Charging Procedures for
A/C System” in this section.
3. Loosen and reposition the compressor in the
mounting brackets.
4. Remove the clutch drive plate and hub assembly
from the compressor. Refer to ”Clutch Plate and
Hub Assembly” in this section.
5. Use the snap ring pliers J–5403 to remove the shaft
seal retaining ring.
Notice : Any dirt or foreign material that enters the com-
pressor may cause damage.
6. Thoroughly clean the inside of the compressor
housing area surrounding the shaft, the exposed
portion of the seal, the shaft itself, and the O–ring
groove.
7. Fully engage the knurled tangs of the seal seat re-
mover/installer J–23128–A into the recessed por-
tion of the seal by turning the handle clockwise.
Remove and discard the seal from the compressor
with a rotating–pulling motion. The handle should
be hand–tightened securely. Do not use a wrench
or pliers to tighten the handle.

AUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM 7D – 27
DAEWOO V–121 BL4
CODE 5 – SUN SENSOR ERROR
This code will set if the output of the sun sensor indicates a probable short circuit or an open in the sensor or the associated
wiring harness, or a malfunction of the ATC controller.
Code 5 – Sun Sensor Error
StepActionValue(s)YesNo
11. Lift the sun sensor from the top of the dash-
board.
2. Secure the ATC harness below the sun sensor
connector so it cannot fall through the opening
in the top of the dashboard.
3. Disconnect the sun sensor connector from the
ATC harness.
4. Examine the wiring from the sensor to the con-
nector, and examine the connector for any
signs of damage.
5. Measure the resistance between the sun sen-
sor connector terminals.
Is there any sign of damage in the wiring or connec-
tor or does the resistance equal the value specified?
0 WGo to Step 2Go to Step 3
2Repair the damaged wiring or the connector, or re-
place the sun sensor as required.
Is the repair complete?–System OK–
31. Turn the ignition to ON.
2. Measure the voltage between the two sun sen-
sor connector terminals on the ATC harness.
Is the voltage equal to the specified value?< 4 vGo to Step 7Go to Step 4
4Check the terminals on the sun sensor connector.
Is any problem found with the connector?–Go to Step 5Go to Step 6
5Repair the connector terminals or replace the sun
sensor or ATC controller as required.
Is the repair complete?–System OK–