Mitsubishi Outlander GS45X. Manual - part 378

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-133

DTC C2101 Abnormality in battery voltage (high voltage)

CAUTION

If there is any problem in the CAN bus lines, an incorrect 
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

).

.

OPERATION

The ABS-ECU is energized by the valve power supply circuit 
(terminal No.26). When the power is supplied from the ignition 
switch (IG1) to the IG1 relay in ETACS-ECU, IG1 relay is 
turned on. At this time, the valve power supply circuit (terminal 
No.7) energizes the ABS-ECU.

.

DTC SET CONDITIONS

This DTC is set when the ABS-ECU power supply voltage is 
more than 18.0 

± 1.0 V.

.

PROBABLE CAUSES

• Battery failure

• ABS-ECU malfunction

• Charging system failed

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 3.
NO :  Repair the CAN bus lines (Refer to GROUP 54C 

− 

CAN Bus Diagnostics Table 

P.54C-17

). On 

completion, go to Step 2.

STEP 2. DTC recheck after resetting CAN bus lines
Q: Is DTC C2101 set?

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

STEP 3. Battery check
Refer to GROUP 54A 

− Battery Test 

P.54A-9

.

Q: Is the battery in good condition?

YES : Go to Step 5.
NO :  Charge or replace the battery. Then go to Step 4.

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-134

STEP 4. Charging system check
Refer to GROUP 16 

− On−vehicle Service/Output Current Test 

P.16-9

 (3.0L engine).

Q: Is the charging system in good condition?

YES : Go to Step 5.
NO :  Repair or replace the charging system component(s).

STEP 5. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Drive the vehicle at 12mph (20 km/h) or higher.
Q: Is DTC C2101 set?

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

(Refer to 

P.35B-188

). Then go to Step 6.

NO :  Intermittent malfunction (Refer to GROUP 00 

− How 

to Use Troubleshooting/How to Cope with Intermittent 
Malfunction 

P.00-15

).

STEP 6. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Drive the vehicle at 12mph (20 km/h) or higher.
Q: Is DTC C2101 set?

YES : Return to Step 1.
NO :  The procedure is complete.

DTC C1395 Brake fluid filling not complete

CAUTION

If there is any problem in the CAN bus lines, an incorrect 
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

).

.

DTC SET CONDITIONS

This DTC is set when the brake fluid is not filled in the hydraulic 
unit.

.

PROBABLE CAUSES

• Different hydraulic unit (For delivery to factory)

• ABS-ECU malfunction

DIAGNOSIS

Required Special Tools:

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

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-135

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 2.

STEP 2. Check whether the DTC is reset.
Erase the DTC.
Q: Is the DTC C1395 set?

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

(Refer to 

P.35B-188

).

NO :  This diagnosis is complete.

DTC C2203 VIN not recorded

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

).

• When other DTC for ABS-ECU is set, troubleshoot that 

DTC first.

.

OPERATION

ABS-ECU receives vehicle information from the engine control 
module and stores it.

.

DTC SET CONDITIONS

This DTC is set when ABS-ECU cannot receive the vehicle 
information from the engine control module.

.

PROBABLE CAUSES

• Malfunction of the CAN bus

• Engine control module malfunction

• ABS-ECU malfunction

• When the ignition switch is turned to the "ON" position for 

the first time after the ABS-ECU is replaced.

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

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-136

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 3.
NO :  Repair the CAN bus lines (Refer to GROUP 54C 

− 

CAN Bus Diagnostics Table 

P.54C-17

). On 

completion, go to Step 2.

STEP 2. DTC recheck after resetting CAN bus lines
Q: Is the DTC C2203 set?

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

STEP 3. Scan tool DTC
Check that the engine control module sets a DTC.
Q: Is the DTC set?

YES (3.0L engine) : Troubleshoot the engine control 

module DTC (Refer to GROUP 13B 

− Diagnostic 

Trouble Code Chart 

P.13B-50

). Then go to Step 5.

NO :  Go to Step 4.

STEP 4. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Ignition switch: "LOCK" (OFF) position
(3) Ignition switch: "ON" position
Q: Is the DTC C2203 set?

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

(Refer to 

P.35B-188

). Then go to Step 5.

NO :  If a trouble is solved, it is determined that there is an 

intermittent malfunction such as poor engaged 
connector(s) or open circuit (Refer to GROUP 00 

− 

How to Use Troubleshooting/How to Cope with 
Intermittent Malfunctions 

P.00-15

).

STEP 5. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Ignition switch: "LOCK" (OFF) position
(3) Ignition switch: "ON" position
Q: Is the DTC C2203 set?

YES : Return to Step 1.
NO :  The procedure is complete.