Mitsubishi Grandis. Manual — part 925

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-25

STEP 2. Check whether the diagnosis code is
reset.

CAUTION

Before connecting or disconnecting the MUT-III,
turn the ignition switch to the "LOCK" (OFF)
position.
(1) Turn the ignition switch to the "ON" position.
(2) Erase the diagnosis code.
(3) Turn the ignition switch to the "LOCK" (OFF)

position.

(4) Turn the ignition switch to the "ON" position.
(5) Check if the diagnosis code is set.
(6) Turn the ignition switch to the "LOCK" (OFF)

position.

Q: Is code No.C1201, C1206, C1211 and C1216 set?

YES :

Go to Step 3.

NO :

The procedure is complete.

STEP 3. Check whether the diagnosis code is
reset.

CAUTION

Before connecting or disconnecting the MUT-III,
turn the ignition switch to the "LOCK" (OFF)
position.
Use MUT-III to check whether diagnosis codes
No.C1200, C1205, C1210 and C1215 have been set
simultaneously.
(1) Connect MUT-III to the 16-pin diagnosis

connector.

(2) Turn the ignition switch to the "ON" position.
(3) Check whether diagnosis codes No.C1200,

C1205, C1210 or C1215 have been set.

(4) Turn the ignition switch to the "LOCK" (OFF)

position.

Q: Is codes No.C1200, C1205, C1210 or C1215 set?

YES :

Carry out diagnosis relevant to diagnosis

codes No.C1200, C1205, C1210 or C1215
(Refer to

P.35B-9

).

NO :

Go to Step 4.

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-26

STEP 4. Check the installation condition of the
wheel speed sensors.

For the wheel speed sensor, which the diagnosis
code indicates, check whether the sensor or its
mounting bolts are loosened.

• Code No.C1201 is set: Front right wheel speed

sensor

• Code No.C1206 is set: Front left wheel speed

sensor

• Code No.C1211 is set: Rear right wheel speed

sensor

• Code No.C1216 is set: Rear left wheel speed

sensor

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Reinstall the wheel speed sensor correctly.
Then go to Step 15.

STEP 5. Check the wheel speed sensor after it is
removed from the vehicle.

Check the wheel speed sensor, which the diagnosis
code indicates (Refer to

P.35B-81

).

• Code No.C1201 is set: Front right wheel speed

sensor

• Code No.C1206 is set: Front left wheel speed

sensor

• Code No.C1211 is set: Rear right wheel speed

sensor

• Code No.C1216 is set: Rear left wheel speed

sensor

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Replace the wheel speed sensor. Then go
to Step 15.

STEP 6. Check the wheel bearing for looseness.
NOTE: If the wheel bearing is loose, the gap
between the wheel speed sensor and rotor may
become excessive. Check the wheel bearing, which
diagnosis code indicates, for looseness.

• Code No.C1201 is set: Check the front right

wheel bearing (Refer to GROUP 26, On-vehicle
service

− Hub axial play check

P.26-6

).

• Code No.C1206 is set: Check the front left wheel

bearing (Refer to GROUP 26, On-vehicle service
− Hub axial play check

P.26-6

).

• Code No.C1211 is set: Check the rear right wheel

bearing (Refer to GROUP 27, On-vehicle service
− Wheel bearing axial play check

P.27-3

).

• Code No.C1216 is set: Check the rear left wheel

bearing (Refer to GROUP 27, On-vehicle service
− Wheel bearing axial play check

P.27-3

).

Q: Is the check result normal?

YES :

Go to Step 7.

NO (front hub axial play is not within the standard
value) :

Replace the front hub assembly (Refer to

GROUP 26, Front axle hub assembly

P.26-8

). Then go to Step 15.

NO (rear wheel bearing axial play is not within the
standard value) :

Replace the rear hub assembly

(Refer to GROUP 27, Rear axle hub
assembly

P.27-5

). Then go to Step 15.

STEP 7. Check the vehicle speed detection
encoder.

Check the vehicle speed detection encoder, which
diagnosis code indicates, for foreign material or
deformation.

• Code No.C1201 is set: Front right wheel speed

sensor

• Code No.C1206 is set: Front left wheel speed

sensor

• Code No.C1211 is set: Rear right wheel speed

sensor

• Code No.C1216 is set: Rear left wheel speed

sensor

Q: Is the check result normal?

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-27

YES :

Go to Step 8.

NO (front hub axial play is not within the standard
value) :

If the vehicle speed detection encoder is

contaminated with foreign material, clean it.
If the front hub assembly is deformed,
replace it (Refer to GROUP 26, Front axle
hub assembly

P.26-8

). Then go to Step 15.

NO (rear wheel bearing axial play is not within the
standard value) :

If the vehicle speed detection

encoder is contaminated with foreign
material, clean it. If the rear axle hub
assembly is deformed, replace it (Refer to
GROUP 27, Rear axle hub assembly

P.27-5

). Then go to Step 15.

STEP 8. Voltage measurement at TCL/ASC-ECU
connector A-04.

(1) Disconnect the connector A-04, and connect

special tool ABS Check Harness (MB991997) to
the wiring harness-side connector.
NOTE: Do not connect special tool ABS Check
Harness (MB991997) to the TCL/ASC-ECU.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between the relevant signal

and earth terminals in the wheel speed sensor
circuit and body earth.

OK: Less than 1V

• Code No.C1201 is set: Between signal

terminal 33 and body earth, and between
earth terminal 34 and body earth

• Code No.C1206 is set: Between signal

terminal 45 and body earth, and between
earth terminal 46 and body earth

• Code No.C1211 is set: Between signal

terminal 42 and body earth, and between
earth terminal 43 and body earth

• Code No.C1216 is set: Between signal

terminal 36 and body earth, and between
earth terminal 37 and body earth

Q: Is the check result normal?

YES :

Go to Step 9.

NO (When the voltage between terminal 33 or 34

−

and body earth measures more than 1 V) :

Go to

Step 10.

NO (When the voltage between terminal 45 or 46

−

and body earth measures more than 1 V) :

Go to

Step 11.

NO (When the voltage between terminal 42 or 43

−

and body earth measures more than 1 V) :

Go to

Step 12.

NO (When the voltage between terminal 36 or 37

−

and body earth measures more than 1 V) :

Go to

Step 13.

AC312620AB

Oil reservoir

Connector: A-04

TCL/ASC-ECU

MB991997

Check connector

A-04 Harness connector

A-04

Hydraulic unit
(with built-in TCL/ASC-ECU)

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-28

STEP 9. Resistance measurement at
TCL/ASC-ECU connector A-04.

(1) Disconnect the connector A-04, and connect

special tool ABS Check Harness (MB991997) to
the wiring harness-side connector.
NOTE: Do not connect special tool ABS Check
Harness (MB991997) to the TCL/ASC-ECU.

(2) Measure the resistance between the relevant

signal and earth terminals in the wheel speed
sensor circuit and body earth.

OK: No continuity

• Code No.C1201 is set: Between signal

terminal 34 and body earth, and between
earth terminal 33 and body earth

• Code No.C1206 is set: Between signal

terminal 45 and body earth, and between
earth terminal 46 and body earth

• Code No.C1211 is set: Between signal

terminal 43 and body earth, and between
earth terminal 42 and body earth

• Code No.C1216 is set: Between signal

terminal 36 and body earth, and between
earth terminal 37 and body earth

Q: Is the check result normal?

YES (Continuity exists between terminal 33 or
terminal 34 and body earth) :

Go to Step 10.

YES (Continuity exists between terminal 45 or
terminal 46 and body earth) :

Go to Step 11.

YES (Continuity exists between terminal 42 or
terminal 43 and body earth) :

Go to Step 12.

YES (Continuity exists between terminal 36 or
terminal 37 and body earth) :

Go to Step 13.

NO :

Go to Step 14.

AC312620AC

Oil reservoir

Connector: A-04

TCL/ASC-ECU

MB991997

Check connector

A-04 Harness connector

A-04

Hydraulic unit
(with built-in TCL/ASC-ECU)