AUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM 7D – 13
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
91. Turn the ignition switch to OFF.
2. Check circuit (Brown) between terminal 86 of
the blower relay to F7 in the I/P fuse block.
3. Repair any problem found in the wiring or ter-
minals at the relay socket or connector C203.
Is the repair complete?–System OK–
10Measure the voltage between ground and terminal
30 (Red) at the blower relay.
Is the voltage within the specified value?11–14 vGo to Step 12Go to Step 11
111. Turn the ignition switch to OFF.
2. Check circuit (Red) between terminal 30 of the
blower relay to EF3 in the engine fuse block.
3. Repair any problem found in the wiring or ter-
minals at the fuse block connector C105, con-
nector C202, or at the relay socket.
Is the repair complete?–System OK–
121. Turn the ignition switch to OFF.
2. Check the continuity in the wiring harness be-
tween the blower relay terminal 85 (Black) and
ground.
Does the ohmmeter show the specified value? 0 ΩGo to Step 14Go to Step 13
13Repair any problem found in terminal 85 at the relay
connector, circuit (Black), Connector C201, or
ground G201.
Is the repair complete?–System OK–
14Replace the blower relay.
Is the repair complete?–System OK–
151. Turn the ignition switch to OFF.
2. Disconnect the wiring harness at the blower
motor.
3. Turn the ignition switch to ON.
4. Measure voltage between ground and blower
connector 1 (Yellow).
Is the voltage within the specified value?11–14 vGo to Step 17Go to Step 16
161. Turn the ignition switch to OFF.
2. Check circuit (Yellow) between blower connec-
tor terminal 1 and blower relay terminal 87.
3. Repair any problem found in the wiring or a
connector terminal at the blower connector,
connector C208, or the blower relay socket.
Is the repair complete?–System OK–
17Measure the resistance between the connector ter-
minals on the blower motor.
Does the resistance match the specified value? 5 ΩGo to Step 19Go to Step 18
18Replace the blower motor.
Is the repair complete?–System OK–
19Measure the resistance of circuit (Violet) between
terminal 2 of the blower connector and terminal 30
of the Max HI relay and terminal 6 of the power tran-
sistor.
Does the resistance match the specified value? 0 ΩGo to Step 21Go to Step 20
7D – 40IAUTOMATIC TEMPERATURE CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO V–121 BL4
GENERAL DESCRIPTION
AND SYSTEM OPERATION
GENERAL INFORMATION
THE V5 SYSTEM
Refer to Section 7B, Manual Control Heating, Ventilation,
and Air Conditioning System,for general information de-
tails for the following:
S System Components – Functional.
S The V5 A/C System.
S V5 Compressor – Description of Operation.
S V5 Compressor – General Description.
SYSTEM COMPONENTS–CONTROL
Controller
The operation of the A/C system is controlled by the
switches on the control head. This console–mounted
heating and ventilation system contains the following
knobs and display:
Temperature Control Push Knobs
1. Raise the temperature of the air entering the ve-
hicle by pressing the top switch, with the red arrow
pointing upward.
2. Lower the temperature by pressing the bottom
switch, with the blue arrow pointing downward.
3. Actuate the air mix door by an electric motor.
4. Vary the mix of the air passing through the heater
core with the air bypassing the core.
Each press of a switch changes the set temperature by in-
crements of 0.5°C (1°F). This is shown in the temperature
window on the function display.
The Function Display
This is an LCD display indicating the status of the control
settings selected. Starting from the left end of the display,
the sections are as follows:
1. Temperature setting – Indicates the temperature set
with the temperature control knob.
2. Auto status – Indicates whether the system is oper-
ating in the full auto mode or the manual mode.
3. Defroster icon – Indicates manual selection of full
defrost mode.
4. Mode – Indicated by icon, the mode chosen by the
system in auto (or by the operator in manual) is
shown by an illumination arrow indicating the air
path.
5. A/C – A snowflake icon indicating whether the A/C
is ON or OFF.
6. Fan speed – Indicates the fan speed by illuminating
a bar based on the segment at the front, for low
speed, and adding additional segments in order up
to the fifth, for high speed.Eight Additional Push Knobs
1. Full defrost – Causes the mode motors to direct all
air to the windshield and aide window outlets for
maximum defrosting.
2. Air intake – Switches between fresh air intake, the
default, and recirculating air. Airflow arrows on the
display indicate the mode in effect.
3. Full Auto Switch – Maintains the set temperature
automatically. In this mode, the fully automatic tem-
perature control (FATC) system controls the follow-
ing:
S The air mix door motor.
S The mode door motor.
S The blower motor speed.
S The inlet air door motor.
S A/C ON/OFF.
4. OFF Switch – Turns the automatic air conditioning
and fan control off.
5. Mode Switch – Allows manual selection of the air-
flow direction.
S Selection is shown on the function display.
S Each time the mode switch is pressed, the next
function is displayed.
6. A/C Switch – Allows manual selection and control
of the air conditioning function.
7. Fan Control Switch – Allows manual selection
among five fan speeds.
8. Defogger Switch – Turns on the electric defogging
heater in the rear window and the outside rearview
mirrors, if the vehicle is equipped with heated mir-
rors.
Pressure Transducer
Pressure transducer switching incorporates the functions
of the high–pressure and the low–pressure cutout
switches along with the fan cycling switch. The pressure
transducer is located in the high–side liquid refrigerant line
behind the right strut tower, between the right strut tower
and the fire wall. The output from this pressure transducer
goes to the electronic control module (ECM), which con-
trols the compressor function based on the pressure sig-
nal.
Wide–Open Throttle (WOT) Compressor
Cutoff
During full–throttle acceleration, the throttle position sen-
sor (TPS) sends a signal to the ECM, which then controls
the compressor clutch.
High RPM Cutoff
As engine rpm approaches the maximum limit, the ECM
will disengage the compressor clutch until the engine
slows to a lower rpm.
SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 45
DAEWOO V–121 BL4
DTC 23 Battery Voltage High
CAUTION : The sensing and diagnostic module(SDM)
can maintain sufficient voltage to deploy the airbags
and pretensioners for 1 minute after the ignition is
OFF and the fuse has been removed. If the airbags
and pretensioners are not disconnected, do not be-
gin service until one minute has passed after discon-
necting power to SDM. Otherwise, injury could result.
CAUTION : During service procedure, be very careful
when handling the SDM. Never strike or jar the SDM.Never power the supplemental inflatable re-
straints(SIR) when the SDM is not rigidly attached to
the vehicle. All SDM mounting bolts must be carefully
tightened , and the arrow on the SDM must be point
toward the front of the vehicle to ensure proper op-
eration of the SIR. The SDM could be activated if it is
powered when it is not rigidly attached to the vehicle,
resulting in unexpected deployment and possible in-
jury.
Step
ActionValue(s)YesNo
1Check the vehicle’s charging system including alter-
nator. Refer toSection 1E, Engine Electrical.
Is the charging system OK?–Go to Step 3Go to Step 2
2Repair the charging system.
Is the repair completed?–Check the sys-
tem again.–
31. Disconnect the negative battery cable.
2. Replace the SDM. Is the repair completed?–Check the sys-
tem again.–
SECTION : 9A
BODY WIRING SYSTEM
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 LOCK unless otherwise noted.
TABLE OF CONTENTS
SCHEMATIC AND ROUTING DIAGRAMS9A–1 . . . . .
Wire Color Chart 9A–1. . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Distribution Schematic 9A–3. . . . . . . . . . . . . . .
Fuse Block Locator (Engine) 9A–12. . . . . . . . . . . . . . .
Fuse Block Locator (Passenger Compartment) 9A–12
Fuse Chart 9A–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Harness Routing 9A–15. . . . . . . . . . . . . . . . . . . .
Rear Harness Routing 9A–16. . . . . . . . . . . . . . . . . . . . .
Hatchback Rear Harness Routing 9A–17. . . . . . . . . . .
Floor Harness Routing 9A–18. . . . . . . . . . . . . . . . . . . .
Instrument Harness Routing 9A–19. . . . . . . . . . . . . . . .
Door Harness Routing 9A–20. . . . . . . . . . . . . . . . . . . . .
SCHEMATIC AND ROUTING DIAGRAMS
WIRE COLOR CHART
Wire ColorAbbreviation On Schematic
GreenDK GRN
Light GreenLT GRN
BlueDK BLU
BrownBRN
OrangeORN
YellowYEL
GreyGRY
Sky BlueLT BLU
RedRED
BlackBLK
PinkPNK
WhiteWHT
PurplePPL
9A – 12IBODY WIRING SYSTEM
DAEWOO V–121 BL4
FUSE BLOCK LOCATOR (ENGINE)
J3B19A10
FUSE BLOCK LOCATOR (PASSENGER COMPARTMENT)
BODY WIRING SYSTEM 9A – 13
DAEWOO V–121 BL4
FUSE CHART
Engine Room Fuse Block
FuseRating/SourceCircuit
EF130AB+Battery Main (F13~F16, F21~F24)
EF260AB+EBCM, Oil Feeding Connector
EF330AB+Blower Relay
EF430AB+Ignition Switch–2
EF530AB+Ignition Switch–1
EF620AB+Cooling Fan Low Relay
EF730AB+Defog Relay
EF830AB+Cooling Fan HI Relay
EF920AIGN 2Power Window Switch
EF1015AIGN 1Fuel Connector, ECM (MR–140), LEGR, EI Sys-
tem
EF1110AB+ECM, Main Relay (Sirius D4)
EF1225AB+Head Lamp Relay, ILLUM. Relay
EF1315AB+Brake Switch
EF1420AIGN 2Power Window Switch
EF1515ALightHead Lamp HI
EF1615AB+Horn Relay, Siren, Hood Contact Switch
EF1710AB+A/C Comp. Relay
EF1815AIGN 1Fuel Pump
EF1915AB+Cluster, Key Remind S/W, Folding Mirror Unit,
MAP Lamp, Room Lamp, Trunk Open Lamp,
Trunk Open S/W
EF2010ALightHead Lamp Low
EF2115AIGN 1/B+EVAP Canister Purge Solenoid, HO2S, Cooling
Fan Relay
EF2215AIGN 1/B+Injector, EGR, EEGR
EF2310AIlluminationLicense Plate Lamp, Chime Bell, Tail Lamp,
Head Lamp
EF2415AB+Fog LampRelay
EF2510AIGN 2Electric OSRV Mirror
EF2615AB+Central Door Lock Unit
EF2710ALightHead Lamp Low
EF2810AIlluminationILLUM. Circuit, Head Lamp, Tail Lamp
EF2910ASpareNot Used
EF3015ASpareNot Used
EF3125ASpareNot Used
9B – 22ILIGHTING SYSTEMS
DAEWOO V–121 BL4
DAYTIME RUNNING LAMPS
Diagnostic Aids
The daytime running lamp (DRL) system will not work if the
parking brake is applied. The system is designed to work
only when the engine is running and the parking brake isreleased. If the parking brake circuit is shorted to ground
or the switch stays closed when the engine is running, the
DRL system will not work.
Daytime Running Lamps (DRL) Do Not Turn ON
StepActionValue(s)YesNo
1Turn the headlamps ON with the headlamp switch.
Do the headlamps work?–Go to Step 3Go to Step 2
2Repair the regular headlamp system before com-
pleting this diagnostic table.
Does the DRL system work after the headlamps
have been repaired?–System OKGo to Step 3
3With the DRL module still disconnected, use an
ohmmeter to check the resistance between ground
and terminal 5 of the DRL module connector.
Is the resistance equal to the specified value? 0 WGo to Step 5Go to Step 4
4Repair the circuit between ground and terminal 5 of
the DRL module connector.
Is the repair complete?–System OK–
51. Release the parking brake.
2. Turn the ignition switch ON.
3. Observe the parking brake indicator lamp.
Is the parking brake indicator lamp ON?–Go to Step 6Go to Step 9
6Disconnect the electrical connector to the parking
brake lever switch.
Is the parking brake indicator lamp still ON?–Go to Step 7Go to Step 8
7Repair the short to ground in the parking brake cir-
cuit.
Is the repair complete?–System OK–
8Replace the parking brake lever switch.
Is the repair complete?–System OK–
91. Make sure the headlamps are turned OFF.
2. With the DRL module disconnected, turn the
ignition ON.
3. Check the voltage at terminal 6 of the DRL
module.
Is the voltage equal to the specified value?0 vGo to Step 11Go to Step 10
10Repair the open between fuse F4 and terminal 6 of
the DRL module.
Is the repair complete?–System OK–
11Replace the DRL module.
Is the repair complete?–System OK–
9D – 18IWIPERS/WASHER SYSTEMS
DAEWOO V–121 BL4
Installation Procedure
1. Install the washer pump.
2. Connect the washer hose to the washer pump.
3. Connect the electrical connector.
Notice : Dissimilar metals in direct contact with each other
may corrode rapidly. Make sure to use the correct fasten-
ers to prevent premature corrosion.
4. Install the front wheel well splash shield with the
bolts and the screws.
Tighten
Tighten the front wheel well splash shield bolts to 1.5
NSm (13 lb–in).
5. Install the front left wheel. Refer to Section 2E,
Tires and Wheels.
6. Connect the negative battery cable.
WINDSHIELD WASHER NOZZLES
Removal Procedure
1. Disconnect the washer hose from the nozzle.
2. Remove the nozzle from the Engine hood.
Installation Procedure
1. Install the nozzle onto the Engine hood.
2. Connect the washer hose to the nozzle.
WINDSHIELD WASHER HOSES
(Typical)
Removal Procedure
1. Disconnect the windshield washer hose from the
washer nozzles.