Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 580

ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-11

STEP 3. Check the harness wires between the ABS-ECU
connector A-02 and the wheel speed sensor <front: LH>
connector A-22.
NOTE: After inspecting the intermediate connector C-06,
inspect the wires. If the intermediate connector C-06 is
damaged, repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection

P.00E-2

. If the connector has been

repaired or replaced, go to Step 9.

Q: Is any of the harness wires between the ABS-ECU

connector A-02 and the wheel speed sensor <front: LH>
connector A-22 damaged?
YES : Repair it and go to Step 9.
NO : Go to Step 7.

STEP 4. Check the harness wires between the ABS-ECU
connector A-02 and the wheel speed sensor <front: RH>
connector A-37.
Q: Is any of the harness wires between the ABS-ECU

connector A-02 and the wheel speed sensor <front: RH>
connector A-37 damaged?
YES : Repair it and then go to Step 9.
NO : Go to Step 7.

AC001985

CONNECTOR: A-02

AD

AC002137AB

CONNECTOR: A-22

AC001989 BH

CONNECTOR: C-06

COMBINATION
METER

AC001985

CONNECTORS: A-02, A-37

AC

A-02

A-37

ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-12

STEP 5. Check the harness wires between the ABS-ECU
connector A-02 and the wheel speed sensor connectors D-
08 <rear: RH> or D-09 <rear: LH>.
NOTE: After inspecting the intermediate connector C-90, C-94
or D-16, inspect the wires. If the intermediate connector C-90,
C-94 or D-16 is damaged, repair or replace it. Refer to GROUP
00E, Harness Connector Inspection

P.00E-2

. If the connector

has been repaired or replaced, go to Step 9 .

Q: Is any of the harness wires between the ABS-ECU

connector A-02 and the wheel speed sensor connectors
D-08 <rear: RH> or D-09 <rear: LH> damaged?
YES : Repair it and then go to Step 9.
NO : Go to Step 7.

AC001985

CONNECTOR: A-02

AD

AC004408AB

CONNECTOR: C-90

AC004410AB

CONNECTOR: C-94

AC004426AB

CONNECTORS: D-08, D-09, D-16

D-09

D-16

D-08

ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-13

STEP 6. Check the wheel speed sensor output voltage.
Refer to

P.35B-45

.

Output Voltage:

•

When measured with a voltmeter: 42 mV or more

•

When measured with oscilloscope (maximum voltage): 200
mV or more

Q: Does the voltage meet the specification?

YES : Replace the hydraulic unit (integrated with ABS-ECU)

and then go to Step 9.

NO : Go to Step 7.

STEP 7. Check the wheel speed sensor or ABS rotor.
Refer to

P.35B-53

. If there is a damage in any of the following

check items, replace the wheel speed sensor or the ABS rotor.

Check items:

•

Wheel speed sensor internal resistance

Standard value: 1.28

−

1.92 k

Ω

•

Insulation between the wheel speed sensor body and
connector terminals

•

Toothed ABS rotor

Q: Is the wheel speed sensor or ABS rotor damaged?

YES : Replace the faulty part and then go to Step 9.
NO : Go to Step 8.

STEP 8. Check the wheel bearing.
Refer to GROUP 26, Front Hub Assembly

P.26-7

, or GROUP

27, Rear Axle Hub

P.27-5

.

Q: Is the wheel bearing damaged?

YES : Replace it and then go to Step 9.
NO : Go to Step 9.

STEP 9. Check the diagnostic trouble codes.

Q: Do the diagnostic trouble codes 11, 12, 13, 14, 21, 22, 23

or 24 reset?
YES : Go to Step 1.
NO : This diagnosis is complete.

ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-14

DTC 15: Wheel Speed Sensor (Abnormal Output Signal)

WHEEL SPEED SENSOR CIRCUIT
Refer to

P.35B-8

.

CIRCUIT OPERATION
Refer to

P.35B-8

.

ABS DTC SET CONDITIONS

•

DTC 15 is output when output signal produced by
any of wheel speed sensor is abnormal
(excluding short and open-circuits).

TROUBLESHOOTING HINTS (The most likely
causes for this DTC is to set are:)

•

Improper installation of the wheel speed sensor

•

Malfunction of the wheel speed sensor

•

Damaged wiring harness or connector

•

Malfunction of the ABS rotor

•

Malfunction of the wheel bearing

DIAGNOSIS

Required Special Tools:

•

MB991223: Harness Set

•

MB991502: Scan Tool (MUT-II)

•

MB991529: Diagnostic Trouble Code Check Harness

STEP 1. Check the wheel speed sensor installation.
Q: Are the wheel speed sensors bolted securely in place at

the front knuckle or the rear knuckle?
YES : Go to Step 2.
NO : Install it properly (Refer to

P.35B-53

.). Then go to

Step 8.

AC000939

FRONT WHEEL
SPEED SENSOR

REAR WHEEL
SPEED SENSOR

AB