Mitsubishi Outlander XL. Manual - part 629

 

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Mitsubishi Outlander XL. Manual - part 629

 

 

YES:

 Replace the ABS-ECU, and then go to Step 5.

NO:

 The procedure is complete.

STEP 5. Check whether the diagnostic trouble code is reset.

(1)

Erase the diagnostic trouble code.

(2)

Drive the vehicle at 12mph (20 km/h) or more.

NOTE: 

The ABS warning light does not turn OFF in some

cases unless the vehicle runs at 12mph (20 km/h) or
higher.

Q:Is DTC C1048 set?

YES:

 Intermittent malfunction. (Refer to GROUP 00 - How

to Cope with Intermittent Malfunction P.00-15.)

NO:

 The procedure is complete.

DTC C1049: RR wheel speed sensor control phase time exceeded

M13502000926USA0000010000

If there is any problem in the CAN bus lines, an incorrect
diagnostic trouble code may be set. Prior to this diagnosis,
diagnose the CAN bus lines. (Refer to GROUP 54D, Trouble
code diagnosis P.54D-17).

CIRCUIT OPERATION

｠

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

｠

The pulse signals, which the wheel speed sensor creates, are
sent to ABS-ECU. ABS-ECU uses the frequency of the pulse
signals to determine the wheel speed.

DTC SET CONDITIONS
This diagnostic trouble code is set if any malfunction below is
found:

｠

When the brake fluid pressure is decreased for a long time.

｠

When the brake fluid pressure is held for a long time.

PROBABLE CAUSES

｠

Damaged wiring harness and connectors

｠

External noise interference

｠

Malfunction of wheel speed sensor

｠

ABS-ECU malfunction

｠

Excessive  gap  between  the  wheel  speed  sensor  and  the
wheel speed detection encoder

｠

Adhesion of foreign materials on the wheel speed sensor

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-79

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

｠

Adhesion of foreign materials on the wheel speed detection
encoder

｠

Wheel bearing malfunction

｠

Improper installation of the wheel speed sensor

｠

Deformation of the wheel speed detection encoder

｠

Disturbance  of  magnetization  pattern  for  wheel  speed
detection encoder

｠

Missing teeth of the wheel speed detection encoder

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicle Communication Interface (V.C.I.)

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

STEP 1. M.U.T.-III CAN bus diagnostics
Use scan tool to diagnose the CAN bus lines.

Q:Is the check result normal?

YES:

 Go to Step 3.

NO:

 Repair the CAN bus lines. (Refer to GROUP 54D - CAN

Bus Diagnostics table P.54D-17.) On completion, go to
Step 2.

STEP 2. Diagnostic trouble code recheck after resetting
CAN bus lines

Q:Is DTC C1049 set?

YES:

 Go to Step 3.

NO:

 The procedure is complete.

STEP 3. M.U.T.-III diagnostic trouble code
Check that the diagnostic trouble codes C102B, C1032, C1035,
and C1044 are also set.

Q:Are DTC C102B, C1032, C1035, and C1044 also set?

YES:

 Carry out the diagnosis for the relevant diagnostic

trouble codes, and then go to Step 5.

NO:

 Go to Step 4.

STEP 4. Check whether the diagnostic trouble code is reset.

(1)

Erase the diagnostic trouble code.

(2)

Drive the vehicle at 12mph (20 km/h) or more.

NOTE: 

The ABS warning light does not turn OFF in some

cases unless the vehicle runs at 12mph (20 km/h) or
higher.

Q:Is DTC C1049 set?

YES:

 Replace the ABS-ECU, and then go to Step 5.

NO:

 The procedure is complete.

STEP 5. Check whether the diagnostic trouble code is reset.

(1)

Erase the diagnostic trouble code.

35B-80

ANTI-LOCK BRAKING SYSTEM (ABS)

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

(2)

Drive the vehicle at 12mph (20 km/h) or more.

NOTE: 

The ABS warning light does not turn OFF in some

cases unless the vehicle runs at 12mph (20 km/h) or
higher.

Q:Is DTC C1049 set?

YES:

 Intermittent malfunction. (Refer to GROUP 00 - How

to Cope with Intermittent Malfunction P.00-15.)

NO:

 The procedure is complete.

DTC C104B,C104F,C1053,C1057/C105F,C1063,C1067,C105B: Abnormality in inlet/
outlet valve (FL,RL,RR,RL)

M13502000927USA0000010000

If there is any problem in the CAN bus lines, an incorrect
diagnostic trouble code may be set. Prior to this diagnosis,
diagnose the CAN bus lines. (Refer to GROUP 54D, Trouble
code diagnosis P.54D-17).

CIRCUIT OPERATION

｠

ABS-ECU contains the power supply circuit (terminal No. 26)
for the solenoid valve. The solenoid valve is energized by the
valve relay, which is incorporated in ABS-ECU.

｠

The valve relay, which is incorporated in ABS-ECU, is always
energizing  the  solenoid  valve  unless  the  initial  check  is  in
progress when the ignition switch is turned on, or the recurrent
system check is in progress.

｠

ABS-ECU activates the solenoid valve by turning on its driving
transistor.

DTC SET CONDITIONS
These  diagnostic  trouble  codes  will  be  set  under  the  cases
below:

｠

The solenoid valve is not energized even after ABS-ECU has
turned  on  valve  relay  (Open  circuit  is  present  in  the  power
supply  circuit  to  the  ABS-ECU  solenoid  valve,  or  the  valve
relay has failed).

｠

The solenoid valve is not activated even after ABS-ECU has
turned on the driving transistor (Open circuit is present in the
solenoid  valve  circuit  in  ABS-ECU,  or  the  valve  relay  has
failed).

｠

After ABS-ECU has turned off the valve relay, the solenoid
valve  still  remains  energized  (short  in  the  solenoid  valve
circuit).

｠

When a solenoid valve failure is detected

PROBABLE CAUSES

｠

ABS-ECU malfunction

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-81

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicle Communication Interface (V.C.I.)

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

｠

MB991974: ABS check harness

STEP 1. M.U.T.-III CAN bus diagnostics
Use scan tool to diagnose the CAN bus lines.

Q:Is the check result normal?

YES:

 Go to Step 3.

NO:

 Repair the CAN bus lines. (Refer to GROUP 54D - CAN

Bus Diagnostics table P.54D-10.) On completion, go to
Step 2.

STEP 2. Diagnostic trouble code recheck after resetting
CAN bus lines

Q:Are  DTC  C104B,  C104F,  C1053,  C1057,  C105F,  C1063,

C1067 or C105B set?

YES:

 Go to Step 3.

NO:

 The procedure is complete.

STEP 3. Check whether the diagnostic trouble code is reset.

Q:Are  DTC  C104B,  C104F,  C1053,  C1057,  C105F,  C1063,

C1067 or C105B set?

YES:

 Replace the ABS-ECU.

NO:

 Intermittent malfunction. (Refer to GROUP 00 - How

to Cope with Intermittent Malfunction P.00-15.)

35B-82

ANTI-LOCK BRAKING SYSTEM (ABS)

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

 

 

 

 

 

 

 

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