Mitsubishi Montero (2004+). Manual — part 1019
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-75
STEP 4. Check the following harness wires.
• The wire between HBB connector B-17 (terminal 1) and
ground
• The wire between HBB connector B-18 (terminal 33) and
ground
Q: Is any harness wire damaged?
YES : Repair or replace it and then go to Step 8.
NO : Go to Step 5.
AC204629 AE
CONNECTOR: B-17
B-17 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
1
2
3
4
5
6
7
8
B-17
AC204626 AB
CONNECTOR: B-18
B-18 (B)
HARNESS CONNECTOR :
COMPONENT SIDE
34
32
31
33
35
B-18
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-76
STEP 5. Check the following connectors.
• M-ASTC-ECU connector E-119 and E-120
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 6.
NO : Repair the faulty connector or terminal and then go to
Step 8.
AC203901
AC204627 AD
CONNECTORS: E-119, E-120
E-119
M-ASTC-ECU CONNECTORS
E-119
E-120
E-120
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-77
STEP 6. Check the following harness wires.
• The wire between HBB connector B-17 (terminal 5) and
M-ASTC-ECU connector E-120 (terminal 57)
AC204629 AE
CONNECTOR: B-17
B-17 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
1
2
3
4
5
6
7
8
B-17
AC203901
AC204627AG
CONNECTOR: E-120
E-120
HARNESS CONNECTOR:
COMPONENT SIDE
E-120
HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS
TSB Revision
BASIC BRAKE SYSTEM
35A-78
• The wire between HBB connector B-18 (terminal 35) and
M-ASTC-ECU connector E-119 (terminal 11)
Q: Is any harness wire damaged?
YES : Repair or replace it and then go to Step 8.
NO : Go to Step 7.
STEP 7. Recheck for diagnostic trouble code.
(1) Erase the DTC memory.
(2) Recheck for diagnostic trouble code.
Q: Is DTC 56 set?
YES : Replace the M-ASTC-ECU (Refer to GROUP 35C,
M-ASTC-ECU
NO : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
.
AC204626 AB
CONNECTOR: B-18
B-18 (B)
HARNESS CONNECTOR :
COMPONENT SIDE
34
32
31
33
35
B-18
AC203901
AC204627AC
CONNECTOR: E-119
E-119
HARNESS CONNECTOR:
COMPONENT SIDE
E-119
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