2004 DAEWOO LACETTI Section 6

1F – 616IENGINE CONTROLS
DAEWOO V–121 BL4
3. Remove the crankshaft position sensor (CKP) bolt.
4. Remove the CKP sensor.
Installation Procedure
1. Install the CKP sensor with the bolt.
Tighten
Tighten the crankshaft position sensor (CKP) bolt to
6.5 NSm (57 lb–in).
2. Connect the CKP sensor electrical connector.
3. Connect the negative battery cable.
CRANKSHAFT POSITION (CKP)
SENSOR (1.8L DOHC)
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the power steering pump, if equipped. Re-
fer to Section 6B, Power Steering Pump.
3. Remove the A/C compressor. Refer to Section 7D,
Automatic Temperature Control Heating, Ventilation
and Air Conditioning System.
4. Remove the rear A/C compressor mounting bracket
bolts and the rear A/C compressor mounting brack-
et.

ENGINE CONTROLS 1F – 617
DAEWOO V–121 BL4
5. Remove the accessory mounting bracket by remov-
ing the bolts.
6. Disconnect the crankshaft position (CKP) sensor
connector.
7. Remove the CKP sensor retaining bolt.
8. Gently rotate and remove the CKP sensor from the
engine block.
Installation Procedure
1. Insert the CKP sensor into the engine block.
2. Install the CKP sensor retaining bolt.
Tighten
Tighten the crankshaft position sensor retaining bolt
to 8 NSm (71 lb–in).
3. Connect the CKP sensor connector.
4. Install the accessory mounting bracket with the
bolts.
Tighten
Tighten the accessory mounting bracket bolts to 27
NSm (37 lb–ft).
5. Install the rear A/C mounting bracket.
Tighten
Tighten the rear A/C mounting bracket bolts to 35
NSm (26 lb–ft).
6. Install the A/C compressor. Refer to Section 7D,
Automatic Temperature Control Heating, Ventilation
and Air Conditioning System.
7. Install the power steering pump. Refer to Section
6B, Power Steering Pump.
8. Connect the negative battery cable.

1F – 618IENGINE CONTROLS
DAEWOO V–121 BL4
CAMSHAFT POSITION SENSOR
(1.4L/1.6L DOHC)
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the engine cover bolts and the nuts.
3. Remove the engine cover.
4. Disconnect the CMP sensor electrical connector.
5. Remove the timing belt front cover. Refer to Sec-
tion 1C, DOHC Engine Mechanical.
6. Remvoe the CMP sensor bolts.
7. Remvoe the CMP sensor from the top.
Installation Procedure
1. Install the camshaft position sensor and bolt.
Tighten
Tighten the camshaft position sensor bolts to 7 NSm
(62 lb–in).
2. Install the timing bolt front cover. Refer to Section
1C, DOHC Engine Mechanical.
3. Connect the CMP sensor electrical connector.
4. Install the engine cover.
5. Connect the negative battery cable.

ENGINE CONTROLS 1F – 619
DAEWOO V–121 BL4
CAMSHAFT POSITION SENSOR
(1.8L DOHC)
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the engine cover.
3. Disconnect the sensor electrical connector.
4. Remove the timing belt front cover. Refer to Sec-
tion 1C, DOHC Engine Mechanical.
5. Remove the camshaft position sensor bolts.
6. Remove the camshaft position sensor from the top.
Installation Procedure
1. Install the camshaft position sensor and bolts.
Tighten
Tighten the camshaft position bolts to 8 NSm (71 lb–
in).
2. Install the timing belt front cover, the crankshaft
pulley, the accessory drive belt, and the air filter.
Refer to Section 1C, DOHC Engine Mechanical.
3. Connect the sensor electrical connector.
4. Install the engine cover.
5. Connect the negative battery cable.

ENGINE CONTROLS 1F – 621
DAEWOO V–121 BL4
ENGINE CONTROL MODULE
(1.8L DOHC)
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the air intake tube and resonator.
3. Disconnect the ECM connectors from the ECM.
4. Remove the engine Control module.
Installation Procedure
1. Connect the ECM connectors to the ECM.
2. Align the ECM into the mounting base.
3. Snap the ECM into its mounting base.
4. Install the ECM trim locks.
5. Install the passenger side kick panel. Refer to Sec-
tion 9G, Interior Trim.
6. Connect the negative battery cable.
7. Perform a crankshaft position system variation
learning procedure. Refer to ”DTC P1336” in this
section.
ELECTRONIC IGNITION SYSTEM
IGNITION COIL (1.4L/1.6L DOHC)
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the electronic ignition (EI) system igni-
tion coil connector.
3. Note the ignition wire location and remove the igni-
tion wire.
4. Remvoe the EI system ignition coil retaining nuts.
5. Remove the EI system ignition coil.
Installation Procedure
1. Install the EI system ignition coil into the mounting
location and install the retaining nuts.
Tighten
Tighten the EI system ignition coil retaining nuts to 10
NSm (89 lb–in).
2. Connect the EI system ignition coil connector.
3. Connect the negative battery cable.

SECTION : 1G
ENGINE EXHAUST
TABLE OF CONTENTS
SPECIFICATIONS1G–1 . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 1G–1. . . . . . . . . .
COMPONENT LOCATOR1G–2 . . . . . . . . . . . . . . . . . . . .
Exhaust System 1G–2. . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE AND REPAIR1G–3 . . . . . . . . . . . . . . .
ON–VEHICLE SERVICE 1G–3. . . . . . . . . . . . . . . . . . . . .
Catalytic Converter 1G–3. . . . . . . . . . . . . . . . . . . . . . . . Exhaust Front Pipe 1G–4. . . . . . . . . . . . . . . . . . . . . . . .
Muffler – Front 1G–6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Muffler – Rear 1G–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL DESCRIPTION AND SYSTEM
OPERATION1G–9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust System 1G–9. . . . . . . . . . . . . . . . . . . . . . . . . .
Muffler 1G–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Catalytic Converters 1G–9. . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb–FtLb–In
Catalytic Converter–to–Exhaust Manifold Nuts4037–
Exhaust Front Pipe–to–Catalytic Converter Nuts4030–
Exhaust Manifold Cover Bolts1511–
Exhaust Front Pip–to–Front Muffler3022–
Front Muffler–to–Rear Muffler Nuts3022–
Front Bracket–to–Cylinder Block Bolt5037–
Catalytic Converter–to–Underbody Shield2.5–22
Front Muffler–to–Underbody Shield2.5–22
Rear Muffler–to–Underbody Shield2.5–22

SECTION 2
POSITION OF CONNECTORS AND GROUNDS
CONTENTS
1. CONNECTOR, GROUND AND SPLICE PACK INFORMATION 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. WIRING HARNESS & CONNECTOR & GROUND LOCATION 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION : 2A
SUSPENSION DIAGNOSIS
TABLE OF CONTENTS
DIAGNOSIS2A–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Diagnosis 2A–1. . . . . . . . . . . . . . . . . . . . . . . . . Torque Steer 2A–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tapered Roller Bearing 2A–6. . . . . . . . . . . . . . . . . . . . .
DIAGNOSIS
GENERAL DIAGNOSIS
Problems in the steering, the suspension, the tires, and
the wheels involve several systems. Consider all systems
when diagnosing a complaint. Some problems, such as
abnormal or excessive tire wear and scuffed tires, may be
the result of hard driving. Always road test the vehicle first.If possible, do this road test with the customer.
Proceed with the following preliminary checks. Correct
any substandard conditions.
Preliminary Checks
ChecksAction
Inspect the tires for improper pressure and uneven wear.Inflate the tires to the proper pressure.
Inspect the joint from the steering column to the steering
gear for loose connections or wear.Tighten the intermediate shaft pinch bolts. Replace the in-
termediate shaft as needed.
Inspect the front and the rear suspension, the steering
gear, and the linkage for loose or damaged parts.Tighten the front and the rear suspension. Tighten the
steering gear mounting bracket bolts. Tighten the coupling
flange pinch bolts. Replace the front and the rear suspen-
sion as needed. Replace the steering gear as needed. Re-
place the intermediate shaft as needed.
Inspect for out–of–round tires.Perform a free runout test. Match–mount the tires.
Inspect for out–of–balance tires, bent wheels, and worn or
loose wheel bearings.Balance the wheels. Replace the wheels. Replace the
wheel bearings.
Check the power steering pump serpentine belt tension.Tighten the power steering pump serpentine belt.
Inspect the power steering system for leaks. Check the
power steering fluid level.Repair any leaks. Perform a power steering gear test. Add
power steering fluid.
Car Lead/Pull
ChecksAction
Inspect for mismatched or uneven tires.Replace the tires.
Inspect for a broken or a sagging spring.Replace the spring.
Inspect for a radial tire lateral force.Check the wheel alignment. Switch the wheels. Replace
the tires as needed.
Check the front–wheel alignment.Align the front wheels.
Inspect for an off–center steering gear.Reseat the pinion valve assembly. Replace the pinion
valve assembly as needed.
Inspect for front–brake dragging.Adjust the front brakes.