Mitsubishi Grandis. Manual — part 898

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-7

ABS WARNING LAMP INSPECTION

M1352012000250

Check that the ABS warning lamp illuminates as
follows.
NOTE: The brake warning lamp is used as a EBD
warning lamp.
1. When the ignition switch is turned to the "ON"

position, the ABS warning lamp and brake
warning lamp illuminates for approximately 3
seconds and then switches off.

2. The ABS and brake warning lamps illuminate for

three seconds

*1

and then go out

*2

.

NOTE:

.

•

*1

: ABS warning lamp may stay ON until the

vehicle speed reaches a few km/h. As far as the
ABS-ECU stores any diagnosis code related to
the ABS sensor malfunction or the motor
malfunction as past trouble, the ABS-ECU
continues illuminating ABS warning lamp until it
verifies that the malfunction for that code is
resolved (Startup check).

•

*2

: Brake warning lamp does not go out when the

parking brake is applied or the brake fluid level is
lowered.

3. If the illumination is other than the above, check

the diagnosis codes.

DIAGNOSTIC FUNCTION

M1352011200831

HOW TO READ DIAGNOSIS CODE

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

read diagnosis code

P.00-5

.

ERASING DIAGNOSIS CODE

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

read diagnosis code

P.00-5

.

DIAGNOSIS CODE CHART

M1352011300805

NOTE: For vehicles with ASC, refer to GROUP 35C,
Troubleshooting

P.35C-6

.

CAUTION

During diagnosis, a diagnosis code associated
with other system may be set when the ignition
switch is turned on with connector(s)
disconnected. On completion, confirm all
systems for diagnosis code(s). If diagnosis
code(s) are set, erase them all.
Follow the inspection chart that is appropriate for the
diagnosis code.

AC313512 AB

Illuminate

OFF

Approximately 3s

ON
ACC,
LOCK

START

Warning
lamp

Ignition
switch

<Vehicles for Australia and New Zealand>

<Expect for Australia and New Zealand>

Brake warning lamp

ABS warning lamp

Brake warning lamp

ABS warning lamp

Diagnosis code
No.

Inspection item

Diagnostic content

Reference page

C1200

Front right wheel speed sensor Open circuit or short circuit

P.35B-9

C1205

Front left wheel speed sensor

C1210

Rear right wheel speed sensor

C1215

Rear left wheel speed sensor

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-8

C1201

Front right wheel speed sensor

P.35B-23

C1206

Front left wheel speed sensor

C1211

Rear right wheel speed sensor

C1216

Rear left wheel speed sensor

C1226

Control solenoid valve (FR) pressure holding system

P.35B-36

C1231

Control solenoid valve (FR) decompressing system

C1236

Control solenoid valve (FL) pressure holding system

C1241

Control solenoid valve (FL) pressure reducing system

C1246

Control solenoid valve (RR) pressure holding system

C1251

Control solenoid valve (RR) pressure reducing system

C1256

Control solenoid valve (RL) pressure holding system

C1261

Control solenoid valve (RL) decompressing system

C1271

Motor system

P.35B-42

C1276

Valve relay system

P.35B-47

C1607

ABS-ECU failure

P.35B-51

C1860

ABS-ECU power supply high voltage (18.0

± 1.0 V or more)

P.35B-53

C1861

ABS-ECU power supply low voltage (9.7

± 0.3 V or less, 8.0 ±

0.5 V or more)

P.35B-53

ABS-ECU power supply low voltage (8.0

± 0.5 V or below)

<when vehicle stopped>

U1073

Bus-off

P.35B-59

Diagnosis code
No.

Inspection item

Diagnostic content

Reference page

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-9

DIAGNOSTIC TROUBLE CODE
PROCEDURES

Code No.C1200: Front Right Wheel Speed Sensor (Open Circuit or Short Circuit)
Code No.C1205: Front Left wheel Speed Sensor (Open Circuit or Short Circuit)
Code No.C1210: Rear Right wheel Speed Sensor (Open Circuit or Short Circuit)
Code No.C1215: Rear Left wheel Speed Sensor (Open Circuit or Short Circuit)

(FRONT: LH)

(FRONT: RH)

(REAR: LH)

(REAR: RH)

WHEEL SPEED SENSOR

ABS-ECU

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet

Wheel Speed Sensor Circuit

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-10

CAUTION

If there is any problem in the CAN bus lines, an
incorrect diagnosis code may be set. Diagnose
the CAN bus lines before the Diagnosis codes
(Refer to GROUP 54D, CAN bus-line diagnostic
flow

P.54D-9

).

OPERATION

• Wheel speed sensor is a kind of a pulse

alternator. It consists of encoders (a plate on
which north and south pole sides of the magnets
are arranged alternately) for detecting wheel
speed which rotates at the same speed of the
wheels and wheel speed sensors. This sensor
outputs frequency pulse signals in proportion to
wheel speed.

• The wheel speed sensors transmit the frequency

of the voltage pulses and the amount of voltage
generated by each pulse to the ABS-ECU.

DIAGNOSIS CODE SET CONDITIONS

Diagnosis codes No.C1200, C1205, 1210 and 1215
are set when signal is not input due to breakage of
the wires of the four wheel speed sensors.

PROBABLE CAUSES

The most likely causes for these diagnosis codes to
set are:

• Malfunction of the wheel speed sensor

• Damaged wiring harness or connector

• Malfunction of the hydraulic unit (integrated with

ABS-ECU)

DIAGNOSIS

STEP 1. MUT-III CAN bus diagnostics

CAUTION

Before connecting or disconnecting the MUT-III,
turn the ignition switch to the "LOCK" (OFF)
position.
(1) Connect MUT-III to the 16-pin diagnosis

connector.

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF)

position.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the CAN bus line (Refer to GROUP
54D, CAN bus line Diagnostic flow

P.54D-9

). Then go to Step 2.

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824