Mitsubishi Outlander GS45X. Manual - part 387

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-169

STEP 7. Resistance measurement at A-01 ABS-ECU 
connector
(1) Disconnect the ABS-ECU connector, connect special tool 

ABS check harness (MB991974) to the harness-side 
connector, and then measure the resistance at the special 
tool connector side.
NOTE: Do not connect the special tool ABS check harness 
(MB991974) to ABS-ECU.

(2) Measure the resistance between the terminal No.13 and the 

body ground.

OK: No continuity

Q: Is the check result normal?

YES : Replace the fusible link No.26. Then go to Step 27.
NO :  The short circuit may be present in the power supply 

circuit. Repair the wiring harness between the A-01 
ABS-ECU connector terminal No.13 and the fusible 
link No.26, and then replace the fusible link No.26. 
Then go to Step 27.

STEP 8. Check the fuse No.12
Visually check for open circuit in the fuse No.12.
Q: Is the check result normal?

YES : Go to Step 11.
NO :  Go to Step 9.

STEP 9. Connector check: C-33 intermediate connector, 
C-317 ETACS-ECU connector
Q: Is the check result normal?

YES : Go to Step 10.
NO :  Repair the defective connector.

AC606869 LU

ABS-ECU

MB991974

Check harness

A-01 ABS-ECU
harness connector

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-170

STEP 10. Resistance measurement at A-01 ABS-ECU 
connector
(1) Disconnect the C-317 ETACS-ECU connector.
(2) Disconnect the ABS-ECU connector, connect special tool 

ABS check harness (MB991974) to the harness-side 
connector, and then measure the resistance at the special 
tool connector side.
NOTE: Do not connect the special tool ABS check harness 
(MB991974) to ABS-ECU.

(3) Measure the resistance between the terminal No.7 and the 

body ground.

OK: No continuity

Q: Is the check result normal?

YES : Replace the fuse No.12. Then go to Step 27.
NO :  The short circuit may be present in the power supply 

circuit. Repair the wiring harness between the A-01 
ABS-ECU connector terminal No.7 and the C-317 
ETACS-ECU connector terminal No.5, and then 
replace the fuse No.12. Then go to Step 27.

STEP 11. Fusible link check: Check the fusible link No.34.
Q: Is the check result normal?

YES : Go to Step 14.
NO :  Go to Step 12.

STEP 12. Connector check: C-309 ETACS-ECU connector
Q: Is the check result normal?

YES : Go to Step 13.
NO  :  Repair the damaged connector.

STEP 13. Resistance measurement at C-309 ETACS-ECU 
connector
(1) Removal the fusible link No.34.
(2) Disconnect the C-309 ETACS-ECU connector, and then 

measure the resistance at the connector side.

(3) Measure the resistance between the terminal No.1 and the 

body ground.

OK: No continuity

Q: Is the check result normal?

YES : Replace the fusible link No.34. Then go to Step 27.
NO :  The short circuit may be present in the power supply 

circuit. Repair the wiring harness between the C-309 
ETACS-ECU connector terminal No.1 and the fusible 
link No.34, and then replace the fusible link No.34. 
Then go to Step 27.

AC606869 HN

ABS-ECU

MB991974

Check harness

A-01 ABS-ECU
harness connector

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-171

STEP 14. Voltage measurement at the A-01 ABS-ECU 
connector
(1) Disconnect the ASC-ECU connector, connect special tool 

ABS check harness (MB991974) to the harness-side 
connector, and then measure the voltage at the special tool 
connector side.
NOTE: Do not connect the special tool ABS check harness 
(MB991974) to ASC-ECU.

(2) Measure the voltage between terminal No.26 and body 

ground.

OK: Approximately system voltage

Q: Is the check result normal?

YES : Go to Step 15.
NO :  The open circuit may be present in the power supply 

circuit. Repair the wiring harness between the A-01 
ABS-ECU connector terminal No.26 and the fusible 
link No.27. Then go to Step 27.

STEP 15. Voltage measurement at the A-01 ABS-ECU 
connector
(1) Disconnect the ABS-ECU connector, connect special tool 

ABS check harness (MB991974) to the harness-side 
connector, and then measure the voltage at the special tool 
connector side.
NOTE: Do not connect the special tool ABS check harness 
(MB991974) to ABS-ECU.

(2) Measure the voltage between terminal No.13 and body 

ground.

OK: Approximately system voltage

Q: Is the check result normal?

YES : Go to Step 16.
NO :  The open circuit may be present in the power supply 

circuit. Repair the wiring harness between the A-01 
ABS-ECU connector terminal No.13 and the fusible 
link No.26. Then go to Step 27.

AC606869 DY

ABS-ECU

MB991974

Check harness

A-01 ABS-ECU
harness connector

AC606869LZ

ABS-ECU

MB991974

Check harness

A-01 ABS-ECU
harness connector

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-172

STEP 16. Measure the voltage at the C-309 ETACS-ECU 
connector.
(1) Disconnect the connector, and measure at the wiring 

harness-side connector.

(2) Measure the voltage between the terminal No.1 and the 

body ground.

OK: Approximately system voltage

Q: Is the check result normal?

YES : Go to Step 17.
NO :  The open circuit may be present in the power supply 

circuit. Repair the wiring harness between the C-309 
ETACS-ECU connector terminal No.1 and fusible link 
No.34. Then go to Step 27.

STEP 17. Connector check: C-317 ETACS-ECU connector
Q: Is the check result normal?

YES : Go to Step 18.
NO  :  Repair the damaged connector.

STEP 18. Measure the voltage at the C-317 ETACS-ECU 
connector.
(1) Measure by backprobing without disconnecting the 

connector.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between the terminal No.6 and the 

body ground.

OK: Approximately system voltage

Q: Is the check result normal?

YES : Go to Step 21.
NO :  Go to Step 19.

STEP 19. Connector check: C-210 ignition switch 
connector
Q: Is the check result normal?

YES : Go to Step 20.
NO  :  Repair the damaged connector.

STEP 20. Check the harness wire between C-210 ignition 
switch connector terminal No.2 and C-317 ETACS-ECU 
connector terminal No.6.

• Check the communication lines for open circuit and short 

circuit.

Q: Is the check result normal?

YES : Troubleshooting the ignition switch (Refer to GROUP 

54A 

− Ignition Switch/Trouble Symptom Chart 

P.54A-16

).

NO :  Repair the wiring harness, and then go to Step 27.