sensor DAEWOO LACETTI 2004 Service Repair Manual

AUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM 7D – 23
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
61. Reconnect the coolant temperature sensor to
the ATC harness.
2. Turn the ignition switch to ON.
3. Observe the temperature display area.
Does this display indicate the continuing presence of
a code 3 condition?–Go to Step 9System OK
71. Pull the ATC controller from the instrument
panel, leaving the wiring harness connected.
2. Measure the voltage between terminals A13
and B9 by backprobing the connectors.
Is the voltage equal to the value specified?< 4 vGo to Step 9Go to Step 8
81. Trace the wiring from controller terminals A13
and B9 to the coolant temperature sensor con-
nector terminals on the ATC harness connec-
tors.
2. Repair any open or high resistance found in the
wiring or connector terminals.
Is the repair complete?–System OK–
9Replace the ATC controller.
Is the repair complete?–System OK–

7D – 24IAUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO V–121 BL4
CODE 4 – AIR MIX DOOR ERROR
This code will set if the output of the mix door indicator indicates that the door opening angle is out of range or does not
change value when the door should be moving. This would indicate a short circuit or an open in the sensor or the associated
wiring harness, a door motor that is not operating, or a malfunction of the ATC controller.
Code 4 – Air Mix Door Error
StepActionValue(s)YesNo
11. Disconnect the I/P wiring harness connector
from the air mix door (AMD) motor.
2. Use an ohmmeter to measure the resistance
between terminals 5 and 7 on the AMD motor.
Does the measured resistance indicate an open or
a shorted condition?Open = ,
Short =
0 ΩGo to Step 4Go to Step 2
2Measure the resistance between terminals 2 and 3
on the AMD motor.
Is the resistance equal to the value specified?
3000 ΩGo to Step 3Go to Step 4
3Measure the resistance between terminals 6 and 2
and between terminals 6 and 3 on the AMD motor.
Do these resistances add to approximately the value
measured between terminals 2 and 3?
3000 ΩGo to Step 5Go to Step 4
4Replace the AMD motor.
Is the repair complete?–System OK–
5Check the connector terminals at the AMD motor
and the wiring in the ATC harness.
Is there a problem with any terminal on either the
harness connector or the motor connector or the wir-
ing?–Go to Step 6Go to Step 7
6Repair the problem found with a connector terminal
or the wiring, or replace the motor as required.
Is the repair complete?–System OK–

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–

7D – 28IAUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
61. Reconnect the sun sensor to the ATC harness.
2. Turn the ignition switch to ON.
3. Observe the temperature display area.
Does this display indicate the continuing presence of
a code 5 condition?–Go to Step 9System OK
71. Pull the ATC controller from the instrument
panel, leaving the wiring harness connected.
2. Measure the voltage between terminals A13
and B10 by backprobing the connectors.
Is the voltage equal to the value specified?< 4 vGo to Step 9Go to Step 8
81. Trace the wiring from controller terminals A13
and B10 to the sun sensor connector terminals
on the ATC harness connectors.
2. Repair any open or high resistance found in the
wiring or connector terminals.
Is the repair complete?–System OK–
9Replace the ATC controller.
Is the repair complete?–System OK–

7D – 36IAUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO V–121 BL4
WATER SENSOR
(Left–Hand Drive Shown, Right–Hand Drive
Similar)
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the instrument panel under cover. Refer to
Section 9G, Interior Trim.
3. Disconnect the electrical connector.
4. Remove the sensor retaining screw.
5. Remove the sensor.
Installation Procedure
1. Install the sensor with the retaining screw.
2. Connect the electrical connector.
3. Install the instrument panel under cover. Refer
toSection 9G, Interior Trim.
4. Connect the negative battery cable.
AMBIENT AIR TEMPERATURE
SENSOR
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the ambient air temperature sensor
electrical connector.
3. Remove the ambient air temperature sensor from
the bracket.
Installation Procedure
1. Install the ambient air temperature sensor into its
bracket.
2. Connect the electrical connector.
3. Connect the negative battery cable.

IAUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM 7D – 37
DAEWOO V–121 BL4
IN–CAR TEMPERATURE SENSOR
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the instrument panel under cover. Refer to
Section 9G, Interior Trim.
3. Disconnect the electrical connector.
4. Remove the tube by turning it clockwise.
5. Remove the screws.
6. Remove the in–car sensor with the tube.
Installation Procedure
1. Install the in–car sensor.
2. Install the in–car sensor retaining screws and tight-
en.
3. Install the air inlet tube and connect the electrical
connector.
4. Install the instrument panel under cover. Refer to
Section 9G, Interior Trim.
5. Connect the battery negative cable.
SUN SENSOR
Removal Procedure
1. Disconnect the negative battery cable.
2. Gently pry up on the sun sensor to remove it.
3. Secure the electrical connector to prevent it from
falling beneath the dash.
4. Disconnect the electrical connector and remove the
sun sensor.

7D – 38IAUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO V–121 BL4
Installation Procedure
1. Connect the electrical connector.
2. Insert and press the sun sensor into position in the
dash.
3. Connect the negative battery cable.

8B – 2ISUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)
DAEWOO V–121 BL4
DTC 80 Driver Side Airbag Sensor Loop Is
Shorted To Power 8B–72. . . . . . . . . . . . . . . . . . . . . . .
DTC 81 Driver Side Airbag Sensor Loop Is
Shorted To Ground 8B–74. . . . . . . . . . . . . . . . . . . . . .
DTC 82 Driver Side Airbag Sensor Communication
Error 8B–76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 83 Driver Side Airbag Sensor Failure 8B–78. . .
DTC 84 Passenger Side Airbag Sensor Loop Is
Shorted To Power 8B–80. . . . . . . . . . . . . . . . . . . . . . .
DTC 85 Passenger Side Airbag Sensor Loop Is
Shorted To Ground 8B–82. . . . . . . . . . . . . . . . . . . . . .
DTC 86 Passenger Side Airbag Sensor
Communication Error 8B–84. . . . . . . . . . . . . . . . . . . .
DTC 87 Passenger Side Airbag Sensor Failure 8B–86
MAINTENANCE AND REPAIR8B–88 . . . . . . . . . . . . . .
ON–VEHICLE SERVICE 8B–88. . . . . . . . . . . . . . . . . . . .
Disabling the Supplemental Inflatable
Restraints(SIR) 8B–88. . . . . . . . . . . . . . . . . . . . . . . . .
Enabling the Supplemental Inflatable
Restraints(SIR) 8B–88. . . . . . . . . . . . . . . . . . . . . . . . .
Handling, Installation and Diagnosis 8B–89. . . . . . . . .
Repairs and Inspections Required After an
Accident 8B–89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accident With Deployment Components
Replacements 8B–90. . . . . . . . . . . . . . . . . . . . . . . . . . Accident Without Deployment Component
Inspection 8B–90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensing and Diagnostic Module (SDM) 8B–90. . . . . .
Driver Airbag Module 8B–91. . . . . . . . . . . . . . . . . . . . . .
Clock Spring 8B–92. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock Spring Alignment 8B–93. . . . . . . . . . . . . . . . . . . .
Passenger Airbag Module 8B–94. . . . . . . . . . . . . . . . . .
Side Airbag Sensor 8B–95. . . . . . . . . . . . . . . . . . . . . . .
Front Seat Belt Pretensioner 8B–95. . . . . . . . . . . . . . .
Airbag Module Deployment (Inside of Vehicle) 8B–95
Airbag Module Deployment (Outside of Vehicle) 8B–97
Deployed Airbag Module Disposal Procedure 8B–98.
SIR Wiring Repair 8B–99. . . . . . . . . . . . . . . . . . . . . . . .
GENERAL DESCRIPTION AND SYSTEM
OPERATION8B–100 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplemental Inflatable Restraints(SIR) 8B–100. . . .
Airbag Modules 8B–100. . . . . . . . . . . . . . . . . . . . . . . . . .
Front Seat Belt Pretensioners 8B–101. . . . . . . . . . . . .
Sensing and Diagnostic Module (SDM) 8B–101. . . . .
Airbag Warning Lamp 8B–101. . . . . . . . . . . . . . . . . . . .
Clock Spring 8B–101. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Harness Connectors 8B–102. . . . . . . . . . . . . . .

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 5
DAEWOO V–121 BL4
SIR COMPONENT LOCATOR
1. Driver Airbag Module
2. Clock Spring
3. Sensing And Diagnostic Module(SDM)4. Passenger Airbag Module
5. Side Airbag Module
6. Side Airbag Sensor

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 7
DAEWOO V–121 BL4
DTC Description
57Passenger Side Airbag Deployment Loop Resistance Is Low
58Passenger Side Airbag Deployment Loop Is Shorted To Ground
59Passenger Airbag Deployment Loop Is Shorted To Power
80Driver Side Airbag Sensor Loop Is Shorted To Power
81Driver Side Airbag Sensor Loop Is Shorted To Ground
82Driver Side Airbag Sensor Communication Error
83Driver Side Airbag Sensor Failure
84Passenger Side Airbag Sensor Loop Is Shorted To Power
85Passenger Side Airbag Sensor Loop Is Shorted To Ground
86Passenger Side Airbag Sensor Communication Error
87Passenger Side Airbag Sensor Failure
SCAN TOOL DIAGNOSTICS
A scan tool can read serial data from terminal 13 of the
data link connector(DLC). The scan tool is used to read
diagnostic trouble codes(DTCs), and to clear some DTCs
after a repair is completed. By design, DTC 51 can not becleared. And the DTC 61 can not be cleared for the ignition
cycle once the DTC has been detected by the SDM.
To use the scan tool, turn the ignition OFF, connect the
scan tool to the DLC, and turn the ignition switch to ON.
Follow the instructions in the scan tool manual. The SDM
sends serial data from terminal 9 of the SDM to terminal
13 of the DLC.