Mitsubishi Outlander GS45X. Manual — part 380

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-141

STEP 9. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
(4) Drive the vehicle at 12 mph (20 km/h) or higher.

NOTE: The ABS warning light does not turn OFF in some
cases unless the vehicle runs at 12 mph (20 km/h) or
higher.

Q: Is any DTC set?

YES (DTC C1608 is set) : Replace the hydraulic unit

(integrated with ABS-ECU) (Refer to

P.35B-188

).

YES (DTC other than C1608 is set) : Replace the

hydraulic unit (integrated with ABS-ECU) (Refer to

P.35C-282

). Then go to step 10.

NO : Go to step 11.

STEP 10. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
(4) Drive the vehicle at 12 mph (20 km/h) or higher.

NOTE: The ABS warning light does not turn OFF in some
cases unless the vehicle runs at 12 mph (20 km/h) or
higher.

Q: Is DTC C1608 set?

YES : Return to Step 1.
NO : Go to step 11.

STEP 11. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
(4) Drive the vehicle at 12 mph (20 km/h) or higher.

NOTE: The ABS warning light does not turn OFF in some
cases unless the vehicle runs at 12 mph (20 km/h) or
higher.

Q: Is any DTC set?

YES : Carry out the applicable troubleshooting for the

diagnostic trouble code (Refer to

P.35B-15

).

NO : The procedure is complete.

ABS DIAGNOSIS

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ANTI-LOCK BRAKING SYSTEM (ABS)

35B-142

DTC U0001 Bus off

CAUTION

• If there is any problem in the CAN bus lines, an incor-

rect DTC may be set. Prior to this diagnosis, diagnose
the CAN bus lines (Refer to GROUP 54C

− CAN Bus

Line Diagnostic Flow

P.54C-10

).

• If DTC U0001 is set in ABS-ECU, always diagnose the

CAN bus line. If there is any fault in the CAN bus lines,
an incorrect DTC may be set. In this case, the set DTC
is not highly reliable.

• Before replacing the ECU, ensure that the communica-

tion circuit is normal.

.

DTC SET CONDITIONS

This DTC is set when ABS-ECU has ceased the CAN commu-
nication (bus off).

.

COMMENTS ON TROUBLE SYMPTOM

Malfunction of wiring harness, connector (s), or ABS-ECU may
be present.

.

PROBABLE CAUSES

• Wiring harness or connector failure of CAN bus line

• ABS-ECU malfunction

• Other ECU malfunction

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. Using scan tool MB991958, diagnose the CAN bus
line.
Use scan tool MB991958 to diagnose the CAN bus lines.
Q: Is the check result normal?

YES : Go to Step 2.
NO : Repair the CAN bus lines (Refer to GROUP 54C

−

CAN Bus Diagnostics Table

P.54C-17

). On

completion, go to Step 3.

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-143

STEP 2. Check whether the DTC is reset.
Erase the DTC.
Q: Is the DTC U0001 set?

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

(Refer to

P.35B-188

).

NO : If the trouble symptom is resolved, an intermittent

malfunction such as poorly engaged connector(s) or
wiring harness is suspected (Refer to GROUP 00

−

How to Use Troubleshooting/How to Cope with
Intermittent Malfunctions

P.00-15

).

STEP 3. Check whether the DTC is reset.
Erase the DTC.
Q: Is the DTC U0001 set?

YES : Return to Step 1.
NO : This diagnosis is complete.

DTC U0100 Engine time-out error

DTC U0141 ETACS time-out error

CAUTION

• If the DTCs U0100 and U0141 are set in ABS-ECU,

always diagnose the CAN bus line. If there is any fault
in the CAN bus lines (Refer to GROUP 54C

− CAN Bus

Line Diagnostic Flow

P.54C-10

), an incorrect DTC may

be set. In this case, the set DTC is not highly reliable.

• Before replacing the ECU, ensure that the communica-

tion circuit is normal.

.

OPERATION

ABS-ECU communicates with the engine control module
(ECM), AWD-ECU and ETACS-ECU via the CAN bus lines.

.

DTC SET CONDITIONS

This DTC is set if ABS-ECU cannot receive the signal sent from
other ECU for a certain period.

.

PROBABLE CAUSES

DTC U0100

• Wiring harness or connector failure of CAN bus line

• Engine control module (ECM) malfunction

• ABS-ECU malfunction

• Connector disconnected or improperly connected

• Stretched or broken wires

ABS DIAGNOSIS

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ANTI-LOCK BRAKING SYSTEM (ABS)

35B-144

DTC U0141

• Wiring harness or connector failure of CAN bus line

• Malfunction of ETACS-ECU

• ABS-ECU malfunction

• Connector disconnected or improperly connected

• Stretched or broken wires

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. Using scan tool MB991958, diagnose the CAN bus
line.
Use scan tool MB991958 to diagnose the CAN bus lines.
Q: Is the check result normal?

YES : Go to Step 2.
NO : Repair the CAN bus lines (Refer to GROUP 54C

−

CAN Bus Diagnostics Table

P.54C-17

). On

completion, go to Step 4.

STEP 2. Check whether the DTC is reset.
Q: Is DTC U0100 or U0141 set?

YES : Go to Step 3.
NO : The procedure is complete.

STEP 3. Scan tool other system DTC
Use scan tool MB991958 to check that other DTC is set in the
ECU corresponding to the relevant diagnosis.
Q: Is other DTC set?

YES : Troubleshoot for the relevant DTC.
NO : Go to Step 4.

STEP 4. Connector check: ABS-ECU connector
Q: Is the check result normal?

YES : Go to Step 5.
NO : Repair the defective connector. Then go to Step 5.

STEP 5. ETACS-ECU coding data check
Check the following coding data stored in ETACS-ECU (Refer
to GROUP 00

− Precautions before Service/Coding List

P.00-44

).

Q: Is the check result normal?

YES : Go to Step 6.
NO : Replace the ETACS-ECU (Refer to GROUP 54A

−

ETACS-ECU

P.54A-825

). Then go to Step 6.