Mitsubishi Montero (2004+). Manual — part 1027
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-107
STEP 2. Check the buzzer circuit at transfer-ECU
connector E-104.
Disconnect transfer-ECU connector E-104.
Q: Does the buzzer still keep on sounding?
YES : Go to Step 3.
NO : Replace the transfer-ECU (Refer to GROUP 23A,
Transfer-ECU
AC204728 AB
CONNECTOR: E-104
E-104
HARNESS CONNECTOR:
COMPONENT SIDE
E-104
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-108
STEP 3. Check the following connectors.
• Buzzer connector E-107
• M-ASTC-ECU connector E-120
AC204692 AB
CONNECTOR: E-107
E-107
BUZZER
CONNECTOR
E-107
AC203901
AC204627AE
CONNECTOR: E-120
M-ASTC-ECU CONNECTOR
E-120
E-120
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
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BASIC BRAKE SYSTEM
35A-109
• Transfer-ECU connector E-104
Check connectors for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?
YES : Go to Step 4.
NO : Repair the faulty connector or terminal and then go to
Step 5.
AC204728 AC
CONNECTOR: E-104
E-104
TRANSFER-ECU CONNECTOR
E-104
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-110
STEP 4. Check the following harness wires.
• The wire between buzzer connector E-107 (terminal 2) and
M-ASTC-ECU connector E-120 (terminal 54)
AC204727AB
CONNECTOR: E-107
E-107
HARNESS
CONNECTOR:
COMPONENT
SIDE
E-107
AC203901
AC204627AG
CONNECTOR: E-120
E-120
HARNESS CONNECTOR:
COMPONENT SIDE
E-120
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