Mitsubishi Montero (2004+). Manual - part 1010

 

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Mitsubishi Montero (2004+). Manual - part 1010

 

 

HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS

TSB Revision

BASIC BRAKE SYSTEM

35A-39

STEP 7. Check the ignition switch (IG2) circuit at motor 
relay A harness connector B-53X.

(1) Remove the motor relay A.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 3 and ground. The 

voltage should measure approximately 12 volts (battery 
positive voltage).

Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : 
Go to Step 8.
NO :  Go to Step 11.

AC204329 AD

MOTOR 
RELAY A

AC204552

3  2  1

5     4

1  2  3

4     5

RELAY BOX CONNECTOR

AC

CONNECTOR: B-53X

B-53X

HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS

TSB Revision

BASIC BRAKE SYSTEM

35A-40

STEP 8. Check the power supply circuit at motor relay B 
harness connector B-54X.

(1) Remove the motor relay B.

(2) Measure the voltage between terminal 4 and ground. The 

voltage should measure approximately 12 volts (battery 
positive voltage).

Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : 
Go to Step 9.
NO :  Go to Step 12.

AC204329 AE

MOTOR 
RELAY B

AC204553

3  2  1

5     4

1  2  3

4     5

RELAY BOX CONNECTOR

AB

CONNECTOR: B-54X

B-54X

HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS

TSB Revision

BASIC BRAKE SYSTEM

35A-41

STEP 9. Check the ignition switch (IG2) circuit at motor 
relay B harness connector B-54X.

(1) Remove the motor relay B.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 3 and ground. The 

voltage should measure approximately 12 volts (battery 
positive voltage).

Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : 
Go to Step 14.
NO :  Go to Step 13.

AC204329 AE

MOTOR 
RELAY B

AC204553

3  2  1

5     4

1  2  3

4     5

RELAY BOX CONNECTOR

AC

CONNECTOR: B-54X

B-54X

HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS

TSB Revision

BASIC BRAKE SYSTEM

35A-42

STEP 10. Check the following harness wire.

• The wire between fusible link number 32 and motor relay A 

connector B-53X (terminal 5)

Q: Is the harness wire damaged?

YES : Repair or replace it and then go to Step 25.
NO :  Go to Step 25.

ACX01501AE

FUSIBLE LINK 
No.32

BATTERY

FUSIBLE LINK No.32

AC204551

3  2  1

5     4

1  2  3

4     5

RELAY BOX CONNECTOR

AC

CONNECTOR: B-53X

B-53X

 

 

 

 

 

 

 

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