2003 DAEWOO MATIZ wheel

1F–180 ENGINE CONTROLS
DAEWOO M-150 BL2
DTC P1385 – Rough Road Sensor Circuit Fault (ABS) (Cont’d)
StepActionValue(s)YesNo
9
Check the Wheel speed sensor signal circuit for a
poor connection at the ECM and repair as needed.
Is the repair complete?
–
Go to Step 14Go to Step 13
10
Check for a poor connection at terminal 3 of the
Wheel speed sensor and repair as needed.
Is the repair complete?
–
Go to Step 14Go to Step 11
11Replace the Wheel speed sensor.
Is the repair complete?–Go to Step 14–
12
1. Turn the ignition OFF.
2. Disconnect the ECM.
3. Turn the ignition ON.
4. Check the Wheel speed sensor signal circuit for a
short to voltage or a short to the 5 volt reference
circuit and repair as needed.
Is the repair complete?
–
Go to Step 14Go to Step 13
13
1. Turn the ignition OFF.
2. Replace the ECM.
Is the repair complete?
–
Go to Step 14
–
14
1. Using the scan tool, clear the DTCs.
2. Start the engine and idle at normal operating
temperature.
3. Operate the vehicle within the conditions for
setting this DTC as specified in the supporting
text.
Does the scan tool indicate that this diagnostic ran
and passed?
–
Go to Step 15Go to Step 2
15
Check if any additional DTCs are set.
Are any DTCs displayed that have not been
diagnosed?
–
Go to
Applicable DTC
table
System OK

ENGINE CONTROLS 1F–243
DAEWOO M-150 BL2
DTC P0501 – Vehicle Speed No Signal(M/T Only)
StepActionValue(s)YesNo
1
Perform an Euro On-Board Diagnostic (EOBD) Sys-
tem Check.
Is the system check complete?
–
Go to Step 2
Go to
“On-Board
Diagnostic
System Check”
2
Notice: Running the vehicle in gear with the wheels
hanging down at full travel will damage the drive
axles.
1. Turn the ignition ON, with the engine OFF.
2. Install a scan tool.
3. Raise the drive wheels.
4. Support the lower control arms so that the drive
axles are in a horizontal (straight) position.
5. Allow the engine to idle in gear.
Does the scan tool display vehicle speed above the
specified value?
0 mphGo to Step 3Go to Step 4
3
1. Turn the ignition ON, with the engine OFF.
2. Review the Freeze Frame data and note the
parameters.
3. Operate the vehicle within the Freeze Frame
conditions and Conditions for Setting this DTC.
Does the scan tool display the vehicle speed above
the specified value?
0 mphGo to Step 12Go to Step 4
4
1. Turn the ignition OFF.
2. Disconnect the engine control module(ECM)
connector.
4. using a digital voltmeter(DVM) connected to
ground, measure the voltage in the Vehicle Speed
Sensor (VSS) signal circuit, at terminal 1 while
rotating the wheels.
Is the voltage greater than or eqaul to specified
value?
0.5 vGo to Step 12Go to Step 5
5
Measure the resistant in the VSS signal circuit while
rotating the wheels.
Is the resistance greater than the specified value?
1950 ΩGo to Step 6Go to Step 7
6
Check the VSS signal circuit for an open and repair
as necessary.
Is the repair complete?
–
Go to Step 12Go to Step 9
7Is the resistance value within or equal to the speci-
fied value?
1300–1950 ΩGo to Step 8Go to Step 9
8
Check the VSS signal circuit for a short to ground or
for being shorted together and repair as necessary.
Is a repair necessary?
–
Go to Step 12Go to Step 12
9
1. Remove the VSS.
2. Measure the resistance between terminals 2 and
3.
Is the resistance value within the specified value?
1300–1950 ΩGo to Step 11Go to Step 10
10Replace the VSS.
Is the action complete?–Go to Step 12–
11Replace the ECM.
Is the action complete?–Go to Step 12–

DAEWOO M-150 BL2
SECTION 2A
SUSPENSION DIAGNOSIS
TABLE OF CONTENTS
Diagnostic Information and Procedures 2A-1. . . . .
General Diagnosis 2A-1. . . . . . . . . . . . . . . . . . . . . . . . . Wheel Bearing Diagnosis 2A-6. . . . . . . . . . . . . . . . . . .
DIAGNOSTIC INFORMATION AND PROCEDURES
GENERAL DIAGNOSIS
Problems in the steering, the suspension, the tires, and
the wheels involve several systems. Consider all sys-
tems when you diagnose a complaint. Some problems,
such as abnormal or excessive tire wear and scuffed
tires, may be the result of hard driving. Always road testthe vehicle first. If possible, do this road test with the
customer.
Proceed with the following preliminary checks. Correct
any substandard conditions.
Application Checks Correction
Preliminary Checks
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 intermediate shaft for
loose connections or wear.

Inspect the joint from the intermediate
shaft to the steering gear for loose
connections or wear.
Tighten the coupling flange pinch
bolts.

Replace the intermediate 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.

Replace the front and the rear
suspension as needed.

Replace the steering gear as needed.

Replace the coupling flange as
needed.

Inspect for out–of–round tires.
Perform 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 drive
belt tension.
Tighten the power steering pump drive
belt.

Inspect the power steering system.
Also, check the power steering fluid
level.
Repair any leaks.

Perform a power steering gear test.

Add power steering fluid.

2A–2 SUSPENSION DIAGNOSIS
DAEWOO M-150 BL2
Condition Probable Cause Correction
Car Lead/Pull
Mismatched or uneven tires.
Replace the tires.

A broken or a sagging coil spring.
Replace the coil spring.

A improperly radial tire lateral force.
Check the wheel alignment.

Switch the tire and wheel assemblies.

Replace the tires as needed.

The front–wheel alignment is
out–of–align.
Align the front wheels.

Off–center steering gear.
Reseat the pinion valve assembly.

Replace the pinion valve assembly as
needed.

Front–brake dragging.
Adjust the front brakes.
Abnormal or Excessive
Tire Wear
The front–wheel and rear–wheel
alignment is out–of–align.
Align the front and the rear wheels.

Excessive toe.
Adjust the toe.

A broken or a sagging coil spring.
Replace the coil spring.

Out–of–balance tires.
Balance the tires.

Worn strut dampeners.
Replace the strut dampeners.

A failure to rotate tires.
Rotate the tires.

Replace the tires as needed.

Overloaded vehicle.
Maintain the proper load weight.

Low tire inflation.
Inflate the tires to the proper pressure.
Scuffed Tires
Incorrect toe.
Adjust the toe.

A twisted or a bent suspension arm.
Replace the suspension arm.
Wheel Tramp
An out–of–balance tire or wheel.
Balance the tire or the wheel.

Improper strut dampener action.
Replace the strut dampeners.
Shimmy, Shake, or
An out–of–balance tire or wheel.
Balance the tire or the wheel.
Vibration
Excessive wheel hub runout.
Measure the hub flange runout.

Replace the hub as needed.

Excessive brake drum or brake rotor
imbalance.
Adjust the brakes.

Replace the brake rotor or the brake
drum as needed.

Worn tie rod ends.
Replace the tie rod ends.

Wheel trim imbalance.
Balance the wheel.

A worn ball joint.
Replace the control arm and ball joint
assembly.

Excessive wheel runout.
Measure the wheel runout.

Replace the wheel as needed.

Excessive loaded radial runout on the
tire and wheel assembly.
Match–mount the tire and wheel
assembly.

SUSPENSION DIAGNOSIS 2A–3
DAEWOO M-150 BL2
Condition Probable Cause Correction
Hard Steering (Manual)
A lack of lubrication of the ball joints,
the tie rods and the steering gear.
Lubricate the ball joints, the tie rods,
and the steering gear.

Replace the control arm and ball joint
assembly, the tie rods, and the
steering gear as needed.

The front–wheel alignment is
out–of–align.
Align the front wheels.

Steering gear adjustment is
out–of–adjustment.
Adjust the steering gear.
Hard Steering (Power)
The steering preload adjustment is
out–of–adjustment.
Perform a rack bearing preload
on–vehicle adjustment.

The leaked hydraulic system.
Test the power steering system
pressure with a gauge.

Replace the seals and the hoses as
needed.

A loose steering gear mounting.
Tighten the steering gear mounting
bracket bolts.
Too Much Play in
Steering.
Worn or loose wheel bearings.
Tighten the drive axle nut.

Replace the wheel bearing as needed.

A loose steering gear mounting.
Tighten the steering gear mounting
bracket bolts.

The steering preload adjustment is
out–of–adjustment.
Perform a rack bearing preload
on–vehicle adjustment.

Loose connections or wear of the joint
from the steering column to the
intermediate shaft.

Loose connections or wear of the joint
from the intermediate shaft to the
steering gear.
Tighten the coupling pinch bolts.

Replace the intermediate shaft as
needed.
Poor Returnability
Binding in the ball joints.
Replace the control arm and ball joint
assembly.

Binding in the steering column.
Lubricate the steering column.

Replace the steering column as
needed.

The front–wheel alignment is
out–of–align.
Align the front wheels.

The steering preload adjustment is
out–of–adjustment.
Perform a rack bearing preload
on–vehicle adjustment.

A sticking valve.
Lubricate the pinion valve assembly.

Replace the pinion valve assembly as
needed.

Binding in the coupling on the
intermediate shaft.
Replace the intermediate shaft.
Abnormal Noise, Front
Suspension
Damaged suspension components.
Replace the damaged suspension
components.

Worn control arm bushings or tie rod
ends.
Replace the control arm bushings or
the tie rods.

2A–4 SUSPENSION DIAGNOSIS
DAEWOO M-150 BL2
Condition Probable Cause Correction
Abnormal Noise, Front
A loose stabilizer shaft link.
Tighten the stabilizer shaft link.
Suspension
Loose wheel nuts.
Tighten the wheel nuts.

Loose suspension bolts or nuts.
Tighten the suspension bolts or the
nuts.

Loose wheel covers.
Tighten the wheel covers.

Worn strut dampeners or strut
mountings.
Replace the strut dampeners.

Tighten the strut mounting nuts.

An improperly positioned strut spring.
Adjust the strut spring to the proper
position.
Wander or Poor
Mismatched or uneven tires.
Replace the tires.
Steering Ability
Worn strut dampeners.
Replace the strut dampeners.

A loose stabilizer shaft link.
Tighten the stabilizer shaft link.

A broken or a sagging coil spring.
Replace the coil spring.

The steering preload adjustment is
out–of–adjustment.
Perform a rack bearing preload
on–vehicle adjustment.

The front–wheel and the rear–wheel
alignment are out–of–align.
Align the front and the rear end
wheels.
Erratic Steering when
Worn or loose wheel bearings.
Replace the wheel bearings.
Braking
A broken or a sagging coil spring.
Replace the coil spring.

A leaking caliper.
Replace the caliper.

Warped rotors.
Replace the rotors.

An incorrect or an uneven caster.
If the caster is beyond specifications,
check the frame and repair it as
needed.
Low or Uneven Trim
A broken or a sagging coil spring.
Replace the coil spring.
Height
An overloaded vehicle.
Maintain the proper load weight.

An incorrect or weak coil spring.
Replace the coil spring.
Ride Too Soft
Worn strut dampeners.
Replace the strut dampeners.

A broken or a sagging coil spring.
Replace the coil spring.
Ride Too Harsh
Incorrect strut dampeners.
Replace the strut dampeners.

An incorrect coil spring.
Replace the coil spring.
Body Leans or Sways
A loose stabilizer shaft link.
Tighten the stabilizer shaft link.
in Corners
Worn strut dampeners or strut
mountings.
Replace the strut dampeners.

Tighten the strut assembly mounting
nuts.

an overloaded vehicle.
Maintain the proper load weight.

A broken or a sagging coil spring.
Replace the coil spring.
Suspension Bottoms
Worn strut dampeners.
Replace the strut dampeners.

An overloaded vehicle.
Maintain the proper load weight.

A broken or a sagging coil spring.
Replace the coil spring.

SUSPENSION DIAGNOSIS 2A–5
DAEWOO M-150 BL2
Condition Probable Cause Correction
Steering Wheel
Air in the power steering system.
Bleed the power steering system.
Kickback (Power)
A loose steering gear mounting.
Tighten the steering gear mounting
bracket bolts.

Loose connections or wear of the joint
from the steering column to the
intermediate shaft.

Loose connections or wear of the joint
from the intermediate shaft to the
steering gear.
Tighten the coupling pinch bolts.

Replace the intermediate shaft as
needed.

Loose tie rod ends.
Tighten the tie rod ends.

Replace the tie rods as needed.

Loose or worn wheel bearings.
Tighten the drive axle nut.

Replace the wheel bearing as needed.
Steering Wheel Surges
or Jerks (Power)
Low pressure in the power steering
system.
Replace the seals and the hoses as
needed.

A sluggish steering gear valve.
Clean the pinion valve assembly.

Replace the pinion valve assembly as
needed.

A loose power steering pump drive
belt.
Adjust the power steering pump drive
belt.
Cupped Tires
The front–wheel and the rear–wheel
alignment are out–of–align.
Align the front and the rear wheels.

Worn strut dampeners.
Replace the strut dampeners.

Worn or loose wheel bearing.
Tighten the drive axle nut.

Replace the wheel bearings as
needed.

Excessive tire or wheel runout.
Match–mount the tires.

Replace the tires as needed.

Replace the wheels as needed.

A worn ball joints.
Replace the control arm and ball joint
assembly.

The steering gear preload adjustment
is out–of–adjustment.
Perform a rack bearing preload
on–vehicle adjustment.

2A–6 SUSPENSION DIAGNOSIS
DAEWOO M-150 BL2
WHEEL BEARING DIAGNOSIS
This vehicle with non–serviceable bearings in the rear
wheels. If any fault is found with a wheel bearing, it must
be replaced.
Wheel Bearing Noise
A road test usually reveals excessive wheel bearing
noise. Wheel bearings emit a howling sound when loose
or damaged. Wheel bearing noise is present only when
the vehicle is moving. It is constant and unwavering and
increases with the speed of the vehicle. If the wheel
bearing noise cannot be positively diagnosed, or if theorigin of the noise cannot be determined, perform the
following test :
1. Raise and suitably support the vehicle.
2. Spin the wheels using your hand. Check for out–of–
round or out–of–balance tires, bent rims, or loose
wheel bearings.
3. Spin the rear wheels using a commercial wheel spin-
er.
4. If a noise can be heard from the passenger compart-
ment, replace the noisy wheel bearings. Refer to Sec-
tion 2D, Rear Suspension.
5. Lower the vehicle.