Mitsubishi Galant 9G. Manual — part 1619
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-60
STEP 5. Measure the resistance at ABS-ECU connector
A-02.
(1) Disconnect the connector A-02, and connect special tool
ABS Check Harness (MB991970) to the wiring
harness-side connector.
NOTE: Do not connect special tool ABS Check Harness
(MB991970) to the ABS-ECU.
(2) Measure the resistance between terminal 2 and ground. It
should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 7.
NO : Go to Step 6.
AC306403
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2
18
1
8
9
7
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4
3
10
11
25
15
16
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27
28
26
12
13
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23
24
22 21 20
AF
ABS-ECU
MB991970
ABS CHECK
HARNESS
CHECK CONNECTOR
A-02 HARNESS CONNECTOR
(HARNESS SIDE)
A-02 (GR)
CONNECTOR: A-02
HYDRAULIC UNIT
(WITH BUILT-IN ABS-ECU)
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-61
STEP 6. Check ABS-ECU connector A-02 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ABS-ECU connector A-02 damaged?
YES : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
NO : An open circuit may be present in the ground circuit.
Repair the wiring harness between ABS-ECU
connector A-02 terminal 2 and the body ground. Then
go to Step 8.
STEP 7. Recheck for diagnostic trouble code.
Check again if the DTC is set.
(1) Turn the ignition switch to the "ON" position.
(2) Erase the DTC.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
(4) Turn the ignition switch to the "ON" position.
(5) Check if the DTC is set.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC C1278 or C1279 set?
YES : Replace the hydraulic unit (integrated with
ABS-ECU). Then go to Step 8.
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
AC306406
19
2
18
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8
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5
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3
10
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25
15
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27
28
26
12
13
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23
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22 21 20
A-02 HARNESS CONNECTOR
(HARNESS SIDE)
AB
A-02 (GR)
CONNECTOR: A-02
HYDRAULIC UNIT
(WITH BUILT-IN ABS-ECU)
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-62
STEP 8. Recheck for diagnostic trouble code.
Check again if the DTC is set.
(1) Turn the ignition switch to the "ON" position.
(2) Erase the DTC.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
(4) Turn the ignition switch to the "ON" position.
(5) Check if the DTC is set.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC C1278 or C1279 set?
YES : Go to Step 1.
NO : The procedure is complete.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-63
DTC C1395: Brake fluid filling not completed
COMBINATION
METER
CPU
CAN-LINE
ABS-ECU
OR
ABS/TCL-ECU
JOINT
CONNECTOR
(1)
PARKING
BRAKE
SWITCH
BRAKE FLUID
LEVEL SWITCH
2.4L ENGINE
3.8L ENGINE
Brake Fluid Level Switch and Parking Brake Switch Circuit
AC309288
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