2003 DAEWOO MATIZ Ignition

7B–8 MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO M-150 BL2
AIR CONDITIONING SYSTEM DIAGNOSIS
INSUFFICIENT COOLING DIAGNOSIS
Step Action Value(s) Yes No
1Can you verify the customer complaint?–Go to Step 2System OK
2
1. Check the fuses Ef14, Ef19, and Ef12.
2. Check the blower fan operation.
3. Check the engine cooling fan operation.
4. Check the A/C compressor belt.
5. Check the A/C condenser for restricted air flow.
6. Check the slippage of the compressor clutch.
7. Repair or replace any components as needed.
8. Check the A/C system operation.
Is the A/C system operation normal?
–
System OKGo to Step 3
3
1. Turn the ignition switch OFF.
2. Connect the high and the low pressure gauges.
Are both pressures within the value specified?
Low SideGo to Step 8Go to Step 6
4Are both pressures above the specified value?Pressure:Go to Step 5–
5Are both pressures within the specified value?200 kPa
(29 Psi)Go to Step 8–
6Are both pressure below the specified value?
(29 Psi)
Go to Step 7Go to Step 4
7
1. Add the refrigerant R–134a.
2. Check the A/C system for leaks.
3. Repair any refrigerant leaks as needed.
4. Recover, evacuate, and recharge the A/C system.
Are both pressure within the specified value?High Side
Pressure:
1,500 kPa
(217.5 Psi)
Go to Step 8
–
8
1. Start the engine and allow it to run at idle.
2. Set the A/C controls to following positions.
The A/C switch to the ON position.
The fresh air control switch to fresh air.
The blower motor to 4.
The temperature to full cold.
Does the A/C compressor clutch engage?
–
Go to Step 9Go to Step 11
9
1. Check for a knocking noise from the A/C
compressor.
2. Cycle the A/C compressor ON and OFF in order
to verify the source of the noise.
Do you hear a loud knocking noise?
–
Go to Step 10Go to Step 14
10
1. Recover the A/C system refrigerant.
2. Replace the A/C compressor.
3. Evacuate and recharge the A/C system.
4. Check the A/C system for leaks.
Is the repair complete?
–
Go to Step 14
–
11
1. Turn the ignition switch OFF.
2. Disconnect the A/C compressor clutch coil
connector.
3. Connect a jumper wire from ground to one A/C
compressor clutch coil terminal.
4. Connect a fused jumper wire from the positive
battery terminal to the other A/C compressor
clutch coil terminal.
Does the A/C clutch engage?
–
Go to Step 12Go to Step 13

7B–10 MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO M-150 BL2
Insufficient Cooling Diagnosis (Cont’d)
Step Action Value(s) Yes No
20
1. Turn the ignition switch OFF.
2. Turn the A/C switch to the OFF position.
3. Attempt to turn the clutch driver (not the pulley).
Can you turn the clutch driver freely by hand?
–
Go to Step 23Go to Step 21
21
1. Recover the A/C system refrigerant.
2. Replace the A/C compressor.
3. Evacuate and recharge the A/C system.
Is the repair complete?
–
System OK
–
221. Add the refrigerant R–134a.
Does the cooling performance improve?–System OKGo to Step 23
23
1. Recover the A/C system refrigerant.
2. Replace the compressor.
3. Evacuate and recharge the A/C system.
4. Check the A/C system for leaks.
Is the repair complete?
–
System OK
–

DAEWOO M-150 BL2
SECTION 8A
SEAT BELTS
CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in B unless otherwise
noted.
TABLE OF CONTENTS
Description and Operation 8A-2. . . . . . . . . . . . . . . . . .
Driver Seat Belt Warning 8A-2. . . . . . . . . . . . . . . . . . .
Three-Point Pretensioner Front Seat Belt
(W/EUROPE Only) 8A-2. . . . . . . . . . . . . . . . . . . . . .
Three-Point WLR Front Seat Belt 8A-2. . . . . . . . . . . .
Three-Point ELR Front Seat Belt 8A-2. . . . . . . . . . . .
Three-Point ELR Rear Outboard Seat Belt 8A-2. . . .
Two-Point Lap Rear Center Seat Belt 8A-2. . . . . . . .
Operational and Functional Checks 8A-2. . . . . . . . . .
Component Locator 8A-3. . . . . . . . . . . . . . . . . . . . . . . .
Front and Rear Seat Belt 8A-3. . . . . . . . . . . . . . . . . . .
Diagnostic Information and Procedures 8A-4. . . . .
Seat Belt Warning Lamp is Inoperative 8A-4. . . . . . . Repair Instructions 8A-5. . . . . . . . . . . . . . . . . . . . . . . . .
On-Vehicle Service 8A-5. . . . . . . . . . . . . . . . . . . . . . . . . .
Three-Point WLR/ELR Front Seat Belt 8A-5. . . . . . .
Three-Point Pretensioner Front Seat Belt
(W/EUROPE Only) 8A-6. . . . . . . . . . . . . . . . . . . . . .
Front Seat Belt Buckle 8A-8. . . . . . . . . . . . . . . . . . . . .
Three–Point ELR Rear Outboard Seat Belt 8A-8. . .
Two-Point Lap Rear Center Seat Belt 8A-10. . . . . . .
Specifications 8A-11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 8A-11. . . . . . . . . .
Schematic and Routing Diagrams 8A-12. . . . . . . . . .
Driver Seat Belt Warning 8A-12. . . . . . . . . . . . . . . . . .

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.

DAEWOO M-150 BL2
SECTION 8B
SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in B unless otherwise
noted.
TABLE OF CONTENTS
Description and Operation 8B-3. . . . . . . . . . . . . . . . . .
Airbag Module 8B-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensing and Diagnostic Module (SDM) 8B-3. . . . . . .
SIR Warning Lamp 8B-3. . . . . . . . . . . . . . . . . . . . . . . .
Clock Spring 8B-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Harness/Connectors 8B-4. . . . . . . . . . . . . . . . .
SIR System 8B-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Precautions 8B-5. . . . . . . . . . . . . . . . . . . . . . .
Airbag Deployment Condition 8B-5. . . . . . . . . . . . . . .
Airbag Deployment Procedure 8B-6. . . . . . . . . . . . . .
Component Locator 8B-7. . . . . . . . . . . . . . . . . . . . . . . .
SIR Component 8B-7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Information and Procedures 8B-8. . . . .
Bulb Check 8B-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault Indication 8B-8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearing Fault Codes 8B-8. . . . . . . . . . . . . . . . . . . . . .
Microprocessor – Independent Lamp
Activation 8B-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Check 8B-10. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault Codes 8B-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 01 Driver Firing Circuit,
Resistance Too High 8B-14. . . . . . . . . . . . . . . . . . . .
DTC 02 Driver Firing Circuit,
Resistance Too Low 8B-16. . . . . . . . . . . . . . . . . . . .
DTC 03 Driver Firing Circuit,
Short To Ground 8B-18. . . . . . . . . . . . . . . . . . . . . . .
DTC 04 Driver Firing Circuit,
Short To Battery Voltage 8B-20. . . . . . . . . . . . . . . .
DTC 05 Passenger Firing Circuit,
Resistance Too High 8B-22. . . . . . . . . . . . . . . . . . . .
DTC 06 Passenger Firing Circuit,
Resistance Too Low 8B-24. . . . . . . . . . . . . . . . . . . .
DTC 07 Passenger Firing Circuit,
Short To Ground 8B-26. . . . . . . . . . . . . . . . . . . . . . .
DTC 08 Passenger Firing Circuit,
Short To Battery Voltage 8B-28. . . . . . . . . . . . . . . .
DTC 09 Driver Pretensioner Circuit,
Resistance Too High 8B-30. . . . . . . . . . . . . . . . . . . . DTC 10 Driver Pretensioner Circuit,
Resistance Too Low 8B-32. . . . . . . . . . . . . . . . . . . .
DTC 11 Driver Pretensioner Circuit,
Short to Ground 8B-34. . . . . . . . . . . . . . . . . . . . . . . .
DTC 12 Driver Pretensioner Circuit,
Short to Battery Voltage 8B-36. . . . . . . . . . . . . . . . .
DTC 13 Passenger Pretensioner Circuit,
Resistance Too High 8B-38. . . . . . . . . . . . . . . . . . . .
DTC 14 Passenger Pretensioner Circuit,
Resistance Too Low 8B-40. . . . . . . . . . . . . . . . . . . .
DTC 15 Passenger Pretensioner Circuit,
Short to Ground 8B-42. . . . . . . . . . . . . . . . . . . . . . . .
DTC 16 Passenger Pretensioner Circuit,
Short to Battery Voltage 8B-44. . . . . . . . . . . . . . . . .
DTC 18 Connection Between Driver Firing
Circuit and Driver Pretensioner Circuit 8B-46. . . . .
DTC 19 Connection Between Driver Firing
Circuit and Passenger Pretensioner Circuit 8B-48
DTC 20 Connection Between Passenger Firing
Circuit and Driver Pretensioner Circuit 8B-50. . . . .
DTC 21 Connection Between Passenger Firing
Circuit and Passenger Pretensioner Circuit 8B-52
DTC 22 Connection Between Driver Pretensioner
Circuit and Passenger Pretensioner Circuit 8B-54
DTC 23 Ignition Input Circuit, Voltage
Too High 8B-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 24 Ignition Input Circuit, Voltage
Too Low 8B-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 25 Warning Lamp Failure 8B-60. . . . . . . . . . . . .
DTC 31 SDM Internal Fault 8B-63. . . . . . . . . . . . . . . .
DTC 32 SDM Crash Recorded 8B-63. . . . . . . . . . . . .
Diagnostic Illustration 1 8B-63. . . . . . . . . . . . . . . . . . .
Diagnostic Illustration 2 8B-64. . . . . . . . . . . . . . . . . . .
Diagnostic Illustration 3 8B-64. . . . . . . . . . . . . . . . . . .
Diagnostic Illustration 4 8B-64. . . . . . . . . . . . . . . . . . .
Diagnostic Illustration 5 8B-64. . . . . . . . . . . . . . . . . . .
Diagnostic Illustration 6 8B-65. . . . . . . . . . . . . . . . . . .
Diagnostic Illustration 7 8B-65. . . . . . . . . . . . . . . . . . .

8B–4 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
If there is a failure of the sensing and diagnostic module
or the external circuits, the SIR warning lamp in the in-
strument cluster turns ON.
As a system check, the SIR warning lamp also turns ON
when the ignition is first switched to the ON position.
Correct Functioning
The system is working properly if:

The SIR warning lamp turns OFF after approximately
four seconds.
Faulty Functioning
The system is not working properly, meaning one of the
SIR components or the wiring connector is faulty, if:

The SIR warning lamp fails to turn ON when the
ignition is first switched ON.

The SIR warning lamp remains ON.
D110B009A
CLOCK SPRING
The clock spring:

Is on the steering column.

Contains a coil that is the electrical contact between
the steering column wiring harness and the driver
side airbag module.

Is part of the circuit for the horn.
Notice: Turning the steering wheel more than three and
one-quarter turns may damage the clock spring.
Turning the steering wheel:

In one direction tightens the coil.

In the opposite direction loosens the coil.

More than three and one-quarter turns may damage
the clock spring.
Caution: Disassembling the clock spring can cause
injury and vehicle damage.The clock spring should never be disassembled.
The clock spring must be replaced if the airbags have
been deployed.
D110B008A
WIRING HARNESS/CONNECTORS
The connector for the sensing and diagnostic module
(SDM) has a built-in shorting bar that will turn ON the
warning lamp if there is a poor connection at the SDM.
As an anti-deployment mechanism, additional shorting
bars are in the

Connector for the clock spring at the lower steering
column.

Passenger airbag module connector.

SDM connector.
When these connectors are separated, the shorting
bars will short circuit any current which is applied, pre-
venting the current from reaching the airbag modules.
SIR SYSTEM
The supplemental inflatable restraints (SIR) system is a
safety device used in conjunction with the seat belts.
The airbag does not replace the function of the seat belt.
The driver and the passengers must always fasten their
seat belts and adjust them for a proper fit.
The SIR is designed to protect the driver and the front
seat passenger in the event of a significant frontal im-
pact to the vehicle. The airbags deploy if the force is ap-
plied from a direction within 30 degrees of the vehicle’s
centerline and above 25 km/h (15 mph) speed.
The SIR consists of a

Driver airbag module.

Passenger airbag module.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B–5
DAEWOO M-150 BL2

Sensing and diagnostic module.

Steering column clock spring.

Wiring harness.

SIR malfunction warning lamp.
D110B001
GENERAL PRECAUTIONS
The supplemental inflatable restraints (SIR) warning
lamp must illuminate when the ignition is switched ON,
and then turn OFF after approximately 4 seconds.
There is a fault in the airbag system if

The warning lamp does not turn OFF.

The warning lamp illuminates while the vehicle is in
operation.If the warning lamp indicates there is a fault in the airbag
system, assume that the SIR system may not be
functional.
Caution: Failure to follow all service procedures in
the correct sequence can cause the airbag system to
deploy unexpectedly and possibly cause a serious
injury.
Only trained personnel at franchised Daewoo dealers
and authorized Daewoo service dealerships may service
the airbag system.
Never attempt to disassemble, repair, or reuse the

Airbag modules.

Clock spring.

Sensing and diagnostic module.

Wiring harness.
When making SIR repairs,

Inspect any SIR part before it is installed.

Use only new parts.

Do not install used SIR parts from other vehicles.

Do not install any part that has been dropped or that
has dents, cracks, or other defects.
AIRBAG DEPLOYMENT CONDITION
Airbag is designed to deploy under 30 left/right angle
barrier and above 25 km/h (15 mph) speed.
Concrete Barrier Deployment Condition
In case of the 0 frontal concrete battier, airbag may
deploy above 25 km/h (15 mph) speed.

8B–8 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO M-150 BL2
DIAGNOSTIC INFORMATION AND PROCEDURES
D110B009A
BULB CHECK
As soon as the operating voltage is applied to the sens-
ing and diagnostic module (SDM) ignition input, the
SDM activates the warning lamp for a bulb check.
The SDM turns the lamp ON for 4 seconds, and then the
SDM turns the lamp OFF.
During the bulb check, the SDM is not ready to detect a
crash or deploy the supplemental inflatable restraints.
FAULT INDICATION
The sensing and diagnostic module records the sys-
tem’s faults in two categories:

Current faults and the fault code appears “Axx” on the
scan tool display.

Historic faults, which are those that were detected in
the past, but are no longer active. And the fault code
appears “Sxx” on the scan tool display.
The warning lamp:

Indicates a fault as soon as it occurs.

Stays ON, even if a fault is no longer active.A scan tool connected to the data link connector (DLC):

Reveals the fault codes.

Receives serial data transmission through the termi-
nal J (13) of the DLC.

Receives ground through the terminal A (4) of the
DLC.
CLEARING FAULT CODES
When the sensing and diagnostic module (SDM) re-
ceives the CODE ERASE command from the scan tool,
the SDM:

Clears the entire fault memory.

Turns OFF the warning lamp.

Resets for fault detection.
External Fault
Service personnel can reset the SDM and turn OFF the
warning lamp if the fault is an external fault.
Internal Fault
An internal fault of the SDM or a CRASH RECORDED
fault code cannot be reset.
In the case of an internal fault of the SDM or a CRASH
RECORDED fault code, the SDM must be replaced.
Voltage-Low Fault
The SDM will turn OFF the VOLTAGE LOW fault as
soon as the voltage recovers.
MICROPROCESSOR –
INDEPENDENT LAMP ACTIVATION
If the sensing and diagnostic module (SDM) electrical
connector is not properly attached, the SDM cannot
function and cannot control the warning lamp.
If this fault is present, the warning lamp will operate in-
dependently from the SDM through the use of shorting
bars that are built into the SDM connector.