Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 579

ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-7

DIAGNOSTIC TROUBLE CODE CHART

M1352011300098

Follow the inspection chart that is appropriate for the
diagnostic trouble code.

NOTE:

.

*: Vehicles with TCL

DIAGNOSTIC
TROUBLE
CODE NO.

INSPECTION ITEM

DIAGNOSTIC CONTENT

REFERENCE PAGE

11

Front right wheel speed sensor

Open circuit or short circuit

P.35B-8

12

Front left wheel speed sensor

13

Rear right wheel speed sensor

14

Rear left wheel speed sensor

15

Wheel speed sensor

Abnormal output signal

P.35B-14

16

Power supply system

ABS-ECU power supply
voltage below or above the
standard value. Not
displayed if the voltage
recovers.

Check the battery.
(Refer to GROUP 54A,
Battery

−

On-vehicle

Service

−

Battery Check

P.54A-5

.)

21

Front right wheel speed sensor

P.35B-8

22

Front left wheel speed sensor

23

Rear right wheel speed sensor

24

Rear left wheel speed sensor

31*

TCL front left solenoid valve (IN)Refer to GROUP 35C,

Diagnostic Trouble Code
Chart

P.35C-7

.)

32*

TCL front left solenoid valve (OUT)

33*

TCL front right solenoid valve (IN)

34*

TCL front right solenoid valve (OUT)

38

Stoplight switch system

P.35B-18

41

ABS front right solenoid valve (IN)

P.35B-23

42

ABS front left solenoid valve (IN)

43

ABS rear right solenoid valve (IN)

44

ABS rear left solenoid valve (IN)

45

ABS front right solenoid valve (OUT)

46

ABS front left solenoid valve (OUT)

47

ABS rear right solenoid valve (OUT)

48

ABS rear left solenoid valve (OUT)

51

Valve power supply

53

Pump motor

63

ABS-ECU

Replace the hydraulic
unit (Integrated with
ABS-ECU).

ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-8

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC 11, 12, 13, 14, 21, 22, 23, 24: Wheel Speed Sensor

Wheel Speed Sensor Circuit

AC001985

CONNECTORS: A-02, A-37

AC

A-02

A-37

AC002137AB

CONNECTOR: A-22

ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-9

CIRCUIT OPERATION

•

A toothed ABS rotor generates a voltage pulse as
it moves across the pickup field of each wheel
speed sensor.

•

The amount of voltage generated at each wheel
is determined by the clearance between the ABS
rotor teeth and the wheel speed sensor, and by
the speed of rotation.

•

The wheel speed sensors transmit the frequency
of the voltage pulses and the amount of voltage
generated by each pulse to the ABS electronic
control unit (ABS-ECU).

•

The ABS hydraulic unit modulates the amount of
braking force individually applied to each wheel
cylinder.

ABS DTC SET CONDITIONS

•

DTCs 11, 12, 13, 14 are output when signal is not
input due to breakage of the wires of one or more
of the four wheel-speed sensors. DTCs 21, 22,
23, 24 are output in the following cases:

•

Open circuit is not found but no input is received
by one or more of the four wheel speed sensors
at 10 km/h (6 mph) or more.

•

Sensor output drops due to a malfunctioning
sensor or warped ABS rotor.

TROUBLESHOOTING HINTS (The most likely
causes for these DTCs are to set are:)
DTC 11, 12, 13, 14

•

Malfunction of the wheel speed sensor

•

Damaged wiring harness or connector

•

Malfunction of the hydraulic unit (integrated with
ABS-ECU)

DTC 21, 22, 23, 24

•

Malfunction of the wheel speed sensor

•

Damaged wiring harness or connector

•

Malfunction of the hydraulic unit (integrated with
ABS-ECU)

•

Malfunction of the ABS rotor

•

Malfunction of the wheel bearing

•

Excessive clearance between the sensor and
ABS rotor

DIAGNOSIS

Required Special Tools:

•

MB991223: Harness Set

•

MB991502: Scan Tool (MUT-II)

•

MB991529: Diagnostic Trouble Code Check Harness

AC004430 AB

CONNECTOR: C-06

COMBINATION METER

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-10

STEP 1. Check the wheel speed sensor installation.
Q: Is the wheel speed sensor 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

.) and go to Step

9.

STEP 2. Check wheel speed sensor circuit at the ABS-ECU
connector A-02.
(1)Disconnect the connector A-02 and measure at the harness

side.

(2)Measure the resistance between the ABS-ECU connector

terminals 1 and 3, 4 and 5, 6 and 7, or 8 and 9.

Standard Value: 1.28

−

1.92 k

Ω

Q: Is the resistance between terminals 1 and 3, 4 and 5, 6

and 7, or 8 and 9 within the standard value?
YES : Go to Step 6.
NO <terminals 6 and 7> : Go to Step 3.
NO <terminals 4 and 5> : Go to Step 4.
NO <terminals 1 and 3, 8 and 9> : Go to Step 5.

AC000939

FRONT WHEEL
SPEED SENSOR

REAR WHEEL
SPEED SENSOR

AB

AC000940 AB

A-02 (HARNESS SIDE)