ECU DAEWOO MATIZ 2003 Service Repair Manual

STEERING WHEEL AND COLUMN 6E–7
DAEWOO M-150 BL2
REPAIR INSTRUCTIONS
ON–VEHICLE SERVICE
D105A501
D15A502A
DW310–010
STEERING WHEEL
(Left–Hand Drive Shown, Right–Hand
Drive Similar)
Tools Required
DW310–010, Steering Wheel Puller
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the SIR module. Refer to Section 8B, Sup-
plemental Inflatable Restraints. (For vehicle with SIR)
3. Remove the steering wheel.
4. Remove the steering wheel horn cover (For vehicle
without SIR) (1).

Straighten the bending locking plate (2).

Remove the nut (3).

Remove the locking plate (4).

In order to install the steering wheel correctly,
match–mark the steering column shaft to the
steering wheel (5).

Remove the steering wheel using the steering
wheel puller DW310–010 (6).
Important: Be careful not to hit the top of steering col-
umn shaft with hammer during repair work.
D15A503A
Installation Procedure
1. Install the SIR module. Refer to Section 8B, Supple-
mental Inflatable Restraints (For vehicle with SIR).
Important: Align the match marks on the steering wheel
and the steering column shaft.
2. Install the steering wheel with the nut and the locking
plate.
Tighten
Tighten the steering wheel nut to 23–33 Nm (17–24
lb-ft).
3. Bend the tabs to secure the locking plate.
4. Install the steering wheel horn cover (For vehicle
without SIR).
5. Connect the negative battery cable.

STEERING WHEEL AND COLUMN 6E–13
DAEWOO M-150 BL2
UNIT REPAIR
D105A701
D15A702A
D15A703A
STANDARD STEERING COLUMN
Disassembly Procedure
1. Remove the steering column from the vehicle. Refer
to “Steering Column” in this section.
Caution: Be careful not to impact on the steering
column shaft. Plastic sleeve may be broken that is
installed to secure the driver at the accident.
2. Remove the steering column shaft from the steering
column.

Remove the retaining ring (1).

Remove the washer (2).

Remove the spring (3).

Remove the washer (4).

Remove the locking of the alignment spacer (5).

Push strongly the steering column shaft downward
(6).

7B–20 MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO M-150 BL2
D108B507
RECEIVER DRYER BRACKET
Removal Procedure
1. Remove the front bumper fascia. Refer to Section
9O, Bumpers and Fascias.
2. Remove the receiver dryer bracket.
Remove the receiver dryer bracket bolt (1).
Remove the receiver dryer bracket–to–body bolts
(2).
D18B508B
Installation Procedure
1. Install the receiver dry bracket with the bolts.
Tighten
Tighten the receiver dryer bracket–to–body bolts
to 5 Nm (44 lb-in) (1).
Tighten the receiver dryer bracket bolt to 5 Nm
(44 lb-in) (2).
2. Install the front bumper fascia. Refer to Section 9O,
Bumpers and Fascias.
D108B509
D18B510A
COMPRESSOR
Removal Procedure
1. Remove the receiver dryer. Refer to “Receiver Dryer
and Dual Cut Switch” in this section.
2. Remove the A/C belt. Refer to Section 6B, Power
Steering Pump.
3. Remove the compressor.
Discharge and recover the refrigerant. Refer to
“Discharging, Adding Oil, Evacuating, and Charg-
ing Provedures for A/C System” in this section.
Remove the bolt securing the low pressure pipe
line to the compressor (1).
Remove the bolt securing the high pressure pipe
line to the compressor (2).
Disconnect the electrical connector (3).
Remove the upper bolt mounting the compressor–
to–bracket (4).
Remove the lower bolts mounting the compres-
sor–to–bracket (5).

7B -- 22 MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO M-150 BL2
D18B514A
DRemove the condenser mounting nuts (3).
DPush the top of the condenser (4).
DTake off the condenser from the lower bracket by
lifting the condenser (5).
DRemove the condenser (6).
D18B515B
Installation Procedure
Important:Discard the removed O--rings.
1. Install the condenser with the nuts.
Tighten
Tighten the condenser mounting nuts to 4 NSm(36lb-
in).
D18B516B
2. Tighten the fittings and the bolt.
Tighten
DTighten the condenser pipe--to--compressor pipe
fitting to 23 NSm (17 lb-ft) (1).
DTighten the condenser pipe--to--receiver dryer pipe
fitting to 14 NSm (10.5 lb-ft) (2).
3. Evacuate and recharge the system. Refer to “Dis-
charging, Adding Oil, Evacuating, and Charging Pro-
cedures for A/C System” in this section.
4. Install the front bumper fascia. Refer toSection 9O,
Bumpers and Fascias.
5. Connect the negative battery cable.
D108B517
A/C HIGH PRESSURE PIPE LINE
(Left -- Hand Drive Shown, Right -- Hand
Drive Similar)
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the front bumper fascia. Refer toSection
9O, Bumpers and Fascias.
3. Discharge and recover the refrigerant. Refer to “Dis-
charging, Adding Oil, Evacuating, and Charging Pro-
cedures for A/C System” in this section.
4. Remove the A/C high pressure pipe line between the
compressor and the condenser.
DRemove the bolt securing the high pressure pipe
line to the compressor (1).

MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM 7B -- 23
DAEWOO M-150 BL2
D18B518A
DLoosen the fitting securing the high pressure pipe
line to the condenser pipe line (2).
DRemove the clamp nut (3).
D18B519A
5. Remove the A/C high pressure pipe line between the
condenser and the receiver dryer.
DLoosen the fitting securing the receiver dryer to the
condenser (1).
D108B520
DRemove the receiver dryer flange nuts (2).
D18B521A
6. Remove the A/C high pressure pipe line between the
receiver dryer and the evaporator.
DRemove the purge control valve. Refer toSection
1F, Engine Controls.
DRemove the bracket nut (1).
DLoosen the fitting (2).

7B -- 24 MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO M-150 BL2
D18B522A
D18B523B
D18B524A
Installation Procedure
Important:Discard the removed O--rings.
1. Install the high pressure pipe lines with the bolts, the
nuts, and the fittings.
Tighten
DTighten the bolt securing the high pressure pipe
line to the compressor to 23 NSm (17 lb-ft) (1).
DTighten the fitting securing the high pressure pipe
line to the condenser pipe line to 23 NSm (17 lb-ft)
(2).
DTighten the fitting securing the high pressure pipe
line to the receiver dryer to 14 NSm (10.5 lb-ft) (3).
DTighten the bracket nut to 5 NSm (44 lb-in) (4).
DTighten the receiver dryer flange nuts to 14 NSm
(10.5 lb-ft) (5).
DTighten the nut securing the high pressure pipe line
to the evaporator to 14 NSm (10.5 lb-ft) (6).
DTighten the bracket nut to 5 NSm (44 lb-in) (7).
2. Install the purge control valve. Refer toSection 1F,
Engine controls.
3. Evacuate and recharge the system. Refer to “Dis-
charging, Adding Oil, Evaculating, and Charging Pro-
cedures for A/C System” in this section.
4. Install the front bumper fascia. Refer toSection 9O,
Bumpers and Fascias.
5. Connect the negative battery cable.
D18B525B

MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM 7B -- 25
DAEWOO M-150 BL2
D108B526
A/C LOW PRESSURE PIPE LINE
(Left -- Hand Drive Shown, Right -- Hand
Drive Similar)
Removal Procedure
1. Disconnect the negative battery cable.
2. Discharge and recover the refrigerant. Refer to “Dis-
charging, Adding Oil, Evacuating, and Charging Pro-
cedures for A/C System” in this section.
3. Remove the A/C low pressure pipe line.
DRemove the bolt securing the A/C low pressure
pipe line at the compressor (1).
D18B527A
DRemove the bracket nut from shut bar (2).
D18B528A
DRemove the purge control valve. Refer toSection
1F, Engine Controls.
DLoosen the nut securing the A/C low pressure pipe
line at the evaporator (3).
D18B529B
Installation Procedure
Important:Discard the removed O--rings.
1. Install the A/C low pressure pipe line.
Tighten
DTighten the nut securing the A/C low pressure pipe
line at the evaporator to 14 NSm (10.5 lb-ft) (1).

7B -- 26 MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO M-150 BL2
D18B530B
D18B531A
DTighten the bracket nut to 5 NSm (44 lb-in) (2).
DTighten the bolt securing the A/C low pressure pipe
line at the compressor to 23 NSm (17 lb-ft) (3).
2. Evacuate and recharge the system. Refer to “Dis-
charging, Adding Oil, Evacuating, and Charging Pro-
cedure for A/C System” in this section.
3. Connect the negative battery cable.
D108B532
D108B533
EVAPORATOR UNIT AND DRAIN
HOSE
(Left -- Hand Drive Shown, Right -- Hand
Drive Similar)
Removal Procedure
1. Disconnect the negative battery cable.
2. Discharge and recover the refrigerant. Refer to “Dis-
charging, Adding Oil, Evacuating, and Charging Pro-
cedures for A/C System” in this section.
3. Loosen the high pressure pipe line (receiver dry-
er→evaporator) nut and the low pressure pipe line
(evaporator→compressor) nut.
4. Remove the glove box. Refer toSection 9E, Instru-
mentation/Driver information.
5. Remove the evaporator unit.
DRemove the drain hose (1).
DDisconnect the thermistor connector (2).
DRemove the screws (3).
DRemove the evaporator backward slowly (4).

7B -- 28 MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO M-150 BL2
UNIT REPAIR
D18B701A
EVAPORATOR CORE AND
EXPANSION VALVE
Disassembly Procedure
1. Remove the evaporator unit. Refer to “Evaporator
Unit and Drain Hose” in this section.
2. Remove the evaporator core and expansion valve.
DRemove the screw (1).
DRemove the clamp (2).
DRemove the screws securing the evaporator case
cover (3).
DRemove the upper evaporator case cover (4).
DRemove the lower evaporator case cover (5).
DRemove the thermistor (6).
DLoosen the fitting and remove the high pressure
pipe line (7).
DRemove the tape (8).
DRemove the evaporator plate seal (9).
DLoosen the fitting and remove the expansion valve
(10).
D18B702A
Assembly Procedure
1. Install the exponsion valve with the fitting.
Tighten
Tighten the high pressure pipe line coupling to 17 NSm
(13 lb-ft) (1).
2. Install the evaporator plate seal.
3. Install the tape.
4. Install the high pressure pipe line with the fitting.
Tighten
Tighten the expansion valve coupling to 22 NSm(16
lb-ft) (2).
5. Install the thermistor.
6. Install the screws securing the evaporator case cov-
er.
7. Install the clamp and the screw.
8. Install the evaporator unit. Refer to “Evaporator Unit
and Drain Hose” in this section.

8A –2 SEAT BELTS
DAEWOO M-150 BL2
DESCRIPTION AND OPERATION
DRIVER SEAT BELT WARNING
The driver’s safety belt incorporates a safety belt re-
minder light in the instrument cluster to remind the driver
if the safety belt is not fastened when the ignition is
turned ON.
THREE-POINT PRETENSIONER
FRONT SEAT BELT (W/EUROPE
ONLY)
The pretensioner front seat belt is optional. It contains a
electrically-controlled pyrotechnical retractor, which re-
duces seat belt slack when it is activated in a head-on or
angled front collision. The pretensioner front seat belt
must be replaced after an accident that causes its ac-
tivation.
THREE-POINT WLR FRONT SEAT
BELT
The three-point web locking retractor (WLR) seat belt
will limit the movement of the driver and offer better
protection in an accident.
THREE-POINT ELR FRONT SEAT
BELT
The three-point emergency locking retractor (ELR) front
seat belt is always unlocked, allowing the passenger
freedom of movement, except in emergencies (rapid de-
celeration, rapid acceleration, or hard cornering maneu-
vers).
THREE-POINT ELR REAR
OUTBOARD SEAT BELT
The rear outboard seating positions use the three-point
emergency locking retractor (ELR) seat belts. The
three-point emergency locking retractor (ELR) seat beltis always unlocked, allowing the passenger freedom of
movement, except in emergencies (rapid deceleration,
rapid acceleration, or hard cornering maneuvers).
TWO-POINT LAP REAR CENTER
SEAT BELT
The two-point lap rear center seat belt is a single contin-
uous length of webbing. The webbing is routed from the
anchor through a latch plate and into a single retractor.
OPERATIONAL AND FUNCTIONAL
CHECKS
Caution:

Keep sharp objects and potentially damaging ob-
jects away from the seat belts.

Avoid bending or damaging any portion of the
buckle or the latch plate.

Do not bleach or dye the belt webbing. Use only
mild soap and water in order to clean the belts.

When installing the seat belt anchor bolts and
the screws, start the bolts and the screws by
hand in order to prevent crossthreading.

Do not attempt any repairs on the retractor mech-
anisms or the covers. Replace any defective as-
semblies with new assemblies.

Replace any belts that are cut or damaged in any
way.
1. Inspect all seat belt anchor bolts and the screws in or-
der to verify that they are secure.
2. Inspect the seat belt buckle. The buckle must lock
and unlock easily.
3. After inserting the latch into the buckle, tug sharply on
the belt. The buckle must remain locked.
4. Fully extend the shoulder belt portion to make sure
that there is no twisting or tears in the belt.
5. Let the shoulder belt retract fully. The belt should re-
tract easily.