2004 DAEWOO LACETTI sensor

ENGINE EXHAUST 1G – 3
DAEWOO V–121 BL4
MAINTENANCE AND REPAIR
ON–VEHICLE SERVICE
CATALYTIC CONVERTER
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the oxygen sensor electrical connector.
3. Remove the exhaust manifold cover with the bolts.
4. Remove the catalytic converter upper flange nuts.
Important : The nuts and the stud may unscrew as a unit
because of the high temperature associated with the ex-
hast manifold, but they can be re–used as such
5. Remove the exhaust front pipe mounting bracket
bolt.
6. Remove the nuts from the exhaust front pipe–to–
catalytic converter flange.
7. Remove the catalytic converter and the gasket.
8. Clean the sealing surfaces on the exhaust front
pipe flange and the exhaust manifold.
9. Check the exhaust front pipe and the exhaust man-
ifold for holes, damage, open seams or other dete-
rioration which could permit exhaust fumes to seep
into the passenger compartment.

1G – 4IENGINE EXHAUST
DAEWOO V–121 BL4
Installation Procedure
1. Install the catalytic converter and the gasket to the
exhaust front pipe flange.
Tighten
Tighten the exhaust front pipe–to–catalytic converter
nuts to 40 NSm (30 lb–ft).
Tighten the exhaust front pipe–to–cylinder block bolt
to 50 NSm (37 lb–ft).
2. Install the catalytic converter to exhaust manifold
nuts and the gasket.
Tighten
Tighten the catalytic converter to exhaust manifold
nuts to 40 NSm (30 lb–ft).
3. Install the exhaust manifold conver bolts.
Tighten
Tighten the exhaust manifold cover bolts to 15 NSm
(11 lb–ft).
4. Connect the oxygen sensor electrical connector.
5. Connect the negative battery cable.
EXHAUST FRONT PIPE
Removal Procedure
1. Remove the crossmember lower bracket with the
bolts.

ENGINE EXHAUST 1G – 5
DAEWOO V–121 BL4
2. Disconnect the oxygen sensor connector.
3. Remove the exhaust front pipe mounting bracket
bolt.
4. Remove the nuts from the exhaust front pipe–to–
catalytic converter flange.
5. Remove the nuts from the exhaust front pipe–to–
exhaust front muffler.
6. Remove the exhaust front pipe and the gasket.
7. Clean the sealing surfaces on the exhaust front
muffler pipe flange and the exhaust front pipe.
8. Check the exhaust front pipe for holes, damage,
open seams or other deterioration which could per-
mit exhaust fumes to seep into the passenger
compartment.
Installation Procedure
1. Install the exhaust front pipe and the gasket.
2. Install the nuts from the exhaust front pipe–to–ex-
hasut front muffler.
Tighten
Tighten the exhaust front pipe–to–exhaust front muf-
fler nets to 30 NSm (22 lb–ft).
3. Install the nuts from the exhaust front pipe–to–cata-
lytic converter flange.
4. Install the exhaust front pipe mounting bracket bolt.
Tighten
Tighten the exhaust front pipe–to–catalytic converter
nuts to 40 NSm (30 lb–ft).
Tighten the exhaust front pipe–to–cylinder block bolt
to 50 NSm (37 lb–ft).
5. Connect the oxygen sensor connector.

POSITION OF CONNECTORS AND GROUNDSW2–3
2) CONNECTOR INFORMATION
Connector
Number
Te r m i n a l
NumberColorConnecting Wiring
HarnessConnector Position
C10121 PinWhiteBody
Engine Fuse BlockEngine Fuse Block
C10211 P i nWhiteBody
Engine Fuse BlockEngine Fuse Block
C10310 PinWhiteEngine
Engine Fuse BlockEngine Fuse Block
C10424 PinWhiteFront
Engine Fuse BlockEngine Fuse Block
C1054 PinWhiteBody
Engine Fuse BlockEngine Fuse Block
C10620 PinWhiteEngine
Engine Fuse BlockEngine Fuse Block
C1072 PinWhiteABS
Engine Fuse BlockEngine Fuse Block
C10824 PinBlackBody
EngineLeft Engine Fuse Block
C1094 PinWhiteEngine
FrontUnder Engine Fuse Block
C11012 PinWhiteABS
BodyBelow Engine Fuse Block
C 1112 PinBlackABS
FrontBelow Engine Fuse Block
C1122 PinBlackFront – HornCenter Cross Member Panel
C11316 PinBlackBody
FrontBehind ECM Bracket
C20176 PinBlackI.P
I.P Fuse BlockI.P Fuse Block
C20289 PinWhiteI.P
BodyLeft CO–Driver Leg Room
C2048 PinWhiteRoof
Body (W/O Rain Sensor)Left CO–Driver Leg Room
C20414 PinWhiteRoof
Body(W/ Rain Sensor)Left CO–Driver Leg Room
C20622 PinWhiteI.P
TCMUpper Driver Leg Room
C2076 PinWhiteAir Bag
I.PUpper Left Driver Leg Room
C20815 PinWhiteI.P
FAT CBehind Glove Box
C20920 PinBlackFAT C
FAT C . A u xBetween Heater Core and
Evaporator Core
C2106 PinWhiteI.P
ConsoleBelow Console Box
C3018 PinWhiteAir Bag
BodyFront SDM
C3024 PinBlackRR. ABS
BodyCenter Rear Cross Member
C35133 PinGrayBody
Front Light DoorUnder CO–Driver A Pillar
C36133 PinGrayBody
Front Right DoorUnder Driver A Pillar
C37112 PinWhiteBody
Rear Light DoorUnder Left B Pillar
C38112 PinWhiteBody
Rear Right DoorUnder Right B Pillar
C401 (N/B)8 PinWhiteTrunk
BodyInside Right Trunk Side Cover
C401 (H/B)6 PinWhiteTrunk
BodyInside Right Trunk Side Cover
C4026 PinWhiteTrunk LID
BodyInside Right Trunk Side Cover
C4036 PinWhiteT/Gate. EXT. – BodyInside Left C Pillar
C4048 PinWhiteT/Gate. EXT. – BodyInside Left C Pillar
C4058 PinWhiteT/Gate. EXT. – T/GateBeside Left Rear Wiper Motor
C4066 PinWhiteT/Gate. EXT. – T/GateBeside Left Rear Wiper Motor
3) GROUND INFORMATION
Ground Number
Wiring HarnessGround Position
G101FrontBehind Left Head Lamp
G102FrontBehind Right Head Lamp
G103BatteryLeft Battery
G104EngineUnder Start Motor
G105BatteryUnder Start Motor
G106ABSBelow EBCM
G107Engine(MR–140/HV–240)Under Start Motor
G201I.PLeft I/P Fuse Block
G202Air BagBehind Left Audio Bracket
G203I.PBehind Left Audio Bracket
G205RoofUpper Driver Leg Room
G301BodyBelow Driver Cross Member Floor Panel
G302BodyBelow Left C Pillar
G303BodyBelow Left CO–Driver Leg Room
G401TrunkCenter Trunk Lower Back Panel
G402T/Gate. EXT.Inside Driver C Pillar
4) SPLICE PACK INFORMATION
Splice Pack Number
ColorWiring HarnessGround Position
S101BlackEngine(MR–140/HV–240)Upper Transmission
S202BlackI.PBehind Cluster
S203RedI.PBehind Audio Mounting
S204MagentaI.PBehind Audio Mounting
S205OrangeTCM (MR–140/HV–240)Upper Driver Leg Room
S301BlueBodyLeft CO–Driver Leg Room
S302BrownBodyLeft CO–Driver Leg Room

POSITION OF CONNECTORS AND GROUNDSW2–11
16) W/H AIR BAG
17) SPLICE PACK
S101 (BLACK) : MR–140
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ECT Sensor ”2” Ter
TP Sensor ”1” Ter
Knock Sensor ”2” TerIAT Sensor ”1” TerLEGR ”2” Ter ECM ”M48” Ter
ECM ”M51” Ter ECM ”M35” Ter ECM ”M64” TerMAP Sensor ”3” Ter
ECM ”M1” Ter B
B
B
B
GW GW
GWOrB
OrB
OrB
EI System ”3” Ter
EI System ”1” TerSb Sb Sb
ECM ”M33” Ter
J3B1S001
S101 (BLACK) : HV–240
S202 (BLACK)
S203 (RED)

FRONT SUSPENSION 2C – 11
DAEWOO V–121 BL4
4. Remove the brake caliper from the rotor. Support
the caliper so it does not hang from the hydraulic
brake hose. Refer to Section 4D, Front Disc
Brakes.
5. Remove the outer tie rod from the knuckle assem-
bly. Refer to Section 6C, Power Steering Gear.
6. On vehicles equipped with the antilock braking sys-
tem (ABS), disconnect the ABS speed sensor elec-
trical connection from the knuckle.
7. Remove the ball joint pinch bolt and the nut.
8. Separate the knuckle from the ball joint using the
ball joint remover KM–507–B.
9. Remove the nuts from the bolts that connect the
knuckle assembly to the strut assembly.

2C – 12IFRONT SUSPENSION
DAEWOO V–121 BL4
Notice : Do not over extend the axle joints. When either
end of the shaft is disconnected, overextension of the joint
can result in separation of internal components and pos-
sible joint failure. Use drive axle joint seal protectors when-
ever performing service on or near the drive axles. Failure
to do so can cause internal joint or seal damage and result
in possible joint failure.
10. Support the drive axle.
11. Separate the drive axle shaft from the wheel hub.
12. Remove the bolts that connect the knuckle assem-
bly to the strut assembly.
13. Remove the knuckle assembly from the vehicle.
Installation Procedure
1. Install the knuckle assembly onto the vehicle.
2. Install the steering knuckle–to–strut assembly nuts.
Tighten
Tighten the steering knuckle–to–strut assembly nuts
to 120 NSm (89 lb–ft).
3. Connect the drive axle to the front wheel hub.
4. Connect the ball joint to the knuckle assembly.
5. Install the ball joint pinch bolt and the nut.
Tighten
Tighten the ball joint pinch bolt nut to 60 NSm (44 lb–
ft).
6. Connect the ABS speed sensor electrical connec-
tion.

2C – 16IFRONT SUSPENSION
DAEWOO V–121 BL4
5. Install the control arm–to–crossmember bolts.
Tighten
S Tighten the front control arm–to–crossmember
bolt to 125 NSm (92 lb–ft).
S Tighten the rear control arm–to–crossmember
bolt to 110 NSm (81 lb–ft).
6. Install the wheel. Refer to Section 2E, Tires and
Wheels.
7. Lower the vehicle.
STRUT ASSEMBLY
Removal Procedure
1. Remove the strut upper cap and nut.
2. Raise and suitably support the vehicle.
3. Remove the wheel. Refer to Section 2E, Tires and
Wheels.
4. On vehicles equipped with an antilock braking sys-
tem (ABS), disconnect the ABS sensor line from
the strut assembly.
5. Remove the brake line from the securing bracket
on the strut assembly.
6. Disconnect the stabilizer shaft link by removing the
stabilizer link–to–strut assembly nut.