1998 MITSUBISHI LANCER EVOLUTION IV ABS

REAR AXLE – On-vehicle Service 27-31
7. SPEED SENSOR OUTPUT VOLTAGE
MEASUREMENT ABS>
(1) Lift up the vehicle and release the parking brake.
(2) Disconnect the AYC-ECU harness connector and take
measurements on the harness side connector.
Caution
Insert the probe from the harness side with the double
lock of the connector unlocked. Inserting it to the
terminal side could result in poor contact.
(3) Turn the wheel to be tested at about 1/2 to one
revolution/sec. and check for the output voltage using
a circuit tester (AC mV range) or oscilloscope.
Terminal nos.
Front LHFront RHRear LHRear RH
7698
20192221
Output voltage:
When circuit tester is used: 70 mV or more
When oscilloscope is used: 200 mVp-p or more
(4) If the output voltage is lower than the above value, it
is probably attributable to the following faults. Check or
replace the speed sensor as necessary.
Excessive clearance between the pole piece and rotor
of the speed sensor
Defective speed sensor
Waveform Check Using Oscilloscope
Check the harness and connector of the speed sensor for
connection. Then, use an oscilloscope to check for output
voltage waveform of each speed sensor as follows.
Start the engine and monitor the sensor by turning the wheel;
for a driving wheel, let it turn by shifting into the 1st gear
and for a driven wheel turn it manually at a constant speed.
NOTE
(1) Waveform may be observed by actually running the
vehicle.
(2) The output voltage is low when the wheel speed remains
low and builds up as the wheel speed increases.
AYC-ECU connector harness side
When turned manually
At idle (5 to 6 km/h)
1st gear

FRONT SUSPENSION – Strut Assembly33A-4
STRUT ASSEMBLY
REMOVAL AND INSTALLATION
Post-installation Operation
Front Wheel Alignment Adjustment
(Refer to P.33A-3.)
12 3
4
5
6 7
Unit: Nm {kgfm}
44 {4.5}
108 – 127
{11.0 – 13.0}
Removal steps
1. Brake hose clamp
2. Front speed sensor bracket

3. Flange nut4. Strut tower bar
5. Plain washer
A6. Bolts
7. Strut assembly
REMOVAL SERVICE POINT
ABOLTS REMOVAL
(1) Suspend the lower arm from the vehicle with wire.
(2) Remove the strut and knuckle connection.

34-1
REAR
SUSPENSION
CONTENTS
SERVICE SPECIFICATIONS 2. . . . . . . . . . . . . .
LUBRICANT 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS 2. . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE 3. . . . . . . . . . . . . . . . . .
1. Rear Wheel Alignment Check and
Adjustment 3. . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Ball Joint Dust Cover Check 3. . . . . . . . . . .
REAR SUSPENSION ASSEMBLY 4. . . . . . . . . UPPER ARM ASSEMBLY 6. . . . . . . . . . . . . . . .
TRAILING ARM ASSEMBLY 8. . . . . . . . . . . . . .
LOWER ARM AND TOE CONTROL
ARM ASSEMBLIES 10. . . . . . . . . . . . . . . . . . . .
SHOCK ABSORBER ASSEMBLY 13. . . . . . .
STABILIZER BAR 14. . . . . . . . . . . . . . . . . . . . . .

REAR SUSPENSION – Rear Suspension Assembly34-4
REAR SUSPENSION ASSEMBLY
REMOVAL AND INSTALLATION
Pre-removal Operation
(1) Center Exhaust Pipe Removal
(Refer to GROUP 15.)
(2) Trunk Room Side Trim Removal
(3) AYC Fluid Draining
(Refer to GROUP 27 – On-vehicle Service.)Post-installation Operation
(1) AYC Fluid Refilling and Bleeding
(Refer to GROUP 27 – On-vehicle Service.)
(2) Center Exhaust Pipe Installation
(Refer to GROUP 15.)
(3) AYC Operation Check
(4) Parking Brake Cable Stroke Check
(Refer to GROUP 36 – On-vehicle Service.)
(5) Wheel Alignment Check and Adjustment
(Refer to P.34-3.)
1
34
5
6
7 9 10
1112
1314
15 1617
Unit: Nm {kgf
m}
44 {4.5}
108 – 127 {11.0 – 13.0}
54 {5.5}
88 {9.0}
93 {9.5}*88 {9.0}
158 2
15
29 – 34
{3.0 – 3.5}
25 {2.6}34 {3.5}25 {2.5}
69
{7.0} Toe control bar
EVOLUTION-V RS
137 – 156 {14.0 – 16.0}*59 – 68 {6.0 – 7.0}*
Removal steps
1. Fuel filler cap
2. Bolt
3. Filler neck protector
4. Cap
5. Shock absorber mounting nut
A6. Brake caliper assembly
7. Rear speed sensor AYC>
8. Brake disc
9. Parking brake cable end (Refer to
GROUP 36.)
10. AYC fluid line connection with AYC>BB11. Propeller shaft connection
12. Upper arm mounting bolt
13. Trailing arm mounting bolt
14. Toe control arm mounting bolt
CA15. Crossmember mounting bolt
16. Differential support assembly
mounting bolt
17. Rear suspension assembly
Caution
The parts marked with * should be first temporarily
tightened, then torqued to specification with the
vehicle on the ground in unloaded condition.

REAR SUSPENSION – Lower Arm and Toe Control Arm AssembliesREAR SUSPENSION – Lower Arm and Toe Control Arm Assemblies34-10
LOWER ARM AND TOE CONTROL ARM ASSEMBLIES
REMOVAL AND INSTALLATION
Post-installation Operation
(1) Check the Toe Control Arm Ball Joint Dust Cover
for Cracks or Damage by Pushing it with Finger(2) Wheel Alignment Check and Adjustment
(Refer to P.34-3.)
12
3 4 5
6
Unit: Nm {kgf
m}
93 {9.5}*
88 {9.0}* 74 – 87 {7.5 – 8.9}*
88 {9.0}*93 {9.5}*
2
Lower arm assembly removal steps
1. Lower arm assembly and shock
absorber connecting bolt
A2. Lower arm assembly mounting bolt
A3. Lower arm assemblyToe control arm assembly removal
steps
B4. Toe control arm and knuckle
connection
C5. Toe control arm assembly mounting
bolt
6. Toe control arm assembly
Caution
The part marked with * should be first temporarily
tightened, then torqued to specification with the
vehicle on the ground in unloaded condition.
REMOVAL SERVICE POINTS
ALOWER ARM ASSEMBLY MOUNTING BOLT
REMOVAL
Place mating marks on the lower arm and the eccentric cam
bolt before removal.Mating marks

REAR SUSPENSION – Shock Absorber Assembly34-13
SHOCK ABSORBER ASSEMBLY
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
Trunk Room Side Trim Removal and Installation

1
2
34
Unit: Nm {kgf
m}
44 {4.5}
88 {9.0}*
Removal steps
1. Cap
2. Shock absorber mounting nuts
3. Bolt
4. Shock absorber assemblyCaution
The part marked with * should be first temporarily
tightened, then torqued to specification with the
vehicle on the ground in unloaded condition.

BASIC BRAKE SYSTEM 35A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANTI-LOCK BRAKING SYSTEM (ABS) 35B. . . . . . . . . . . . . . . . . . . . . .
35-1
SERVICE BRAKES
CONTENTS

35B-1
ANTI-LOCK
BRAKING
SYSTEM (ABS)
CONTENTS
TROUBLESHOOTING 2. . . . . . . . . . . . . . . . . . . .
1. Inspection Chart for Diagnosis Codes 2. . .
2. Inspection Procedure for Diagnostic
Trouble Codes 3. . . . . . . . . . . . . . . . . . . . . . . .
3. Inspection Chart for Trouble Symptoms 11
4. Inspection Procedure for Trouble
Symptoms 12. . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Check at ABS-ECU Terminals 15. . . . . . . . .
ON-VEHICLE SERVICE 17. . . . . . . . . . . . . . . .
Wheel Speed Sensor Output Voltage
Measurement 17. . . . . . . . . . .
LATERAL ACCELERATION SENSOR 17. . .
WHEEL SPEED SENSOR 18. . . . . . . . . . . . . .