Mitsubishi Montero (2002-2004). Manual — part 1009
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-61
STEP 5. Check the power supply circuit at HBB harness
connector B-17.
(1) Disconnect HBB connector B-17.
(2) Measure the voltage between terminal 2 and ground. The
voltage should measure 0 volt.
Q: Is the measured voltage 0 volt?
YES : Go to Step 7.
NO : Go to Step 6.
AC204629 AC
CONNECTOR: B-17
B-17 (GR)
HBB CONNECTOR
B-17
AC204633
1
2
3
4
5
6
7
8
AB
HARNESS CONNECTOR:
COMPONENT SIDE
B-17
(GR)
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-62
STEP 6. Check the following harness wire.
• The wire between motor relay B connector B-54X (terminal
5) and HBB connector B-17 (terminal 2)
Q: Is the harness wire damaged?
YES : Repair or replace it and then go to Step 15.
NO : Go to Step 15.
AC204551
3 2 1
5 4
1 2 3
4 5
RELAY BOX CONNECTOR
AD
CONNECTOR: B-54X
B-54X
AC204629 AE
CONNECTOR: B-17
B-17 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
1
2
3
4
5
6
7
8
B-17
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-63
STEP 7. Check the following harness wires.
• The wire between motor relay A connector B-53X (terminal
1) and M-ASTC-ECU connector E-120 (terminal 48)
AC204551
3 2 1
5 4
1 2 3
4 5
RELAY BOX CONNECTOR
AC
CONNECTOR: B-53X
B-53X
AC203901
AC204627AG
CONNECTOR: E-120
E-120
HARNESS CONNECTOR:
COMPONENT SIDE
E-120
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-64
• The wire between motor relay B connector B-54X (terminal
1) and M-ASTC-ECU connector E-119 (terminal 24)
Q: Is any harness wire damaged?
YES : Repair or replace it and then go to Step 15.
NO : Go to Step 8.
AC204551
3 2 1
5 4
1 2 3
4 5
RELAY BOX CONNECTOR
AD
CONNECTOR: B-54X
B-54X
AC203901
AC204627AC
CONNECTOR: E-119
E-119
HARNESS CONNECTOR:
COMPONENT SIDE
E-119
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