Mitsubishi Galant 9G. Manual — part 1612
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-32
STEP 9. 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 the relevant signal and
ground terminals in the wheel speed sensor circuit and
body ground. OK if there is no continuity.
• DTC C1201 is set: Between signal terminal 9 and body
ground, and between ground terminal 10 and body
ground
• DTC C1206 is set: Between signal terminal 26 and body
ground, and between ground terminal 16 and body
ground
• DTC C1211 is set: Between signal terminal 11 and body
ground, and between ground terminal 17 and body
ground
• DTC C1216 is set: Between signal terminal 28 and body
ground, and between ground terminal 27 and body
ground
Q: Does continuity exist?
YES (Continuity exists between terminal 9 or terminal 10
and body ground) : Go to Step 11.
YES (Continuity exists between terminal 26 or terminal
16 and body ground) : Go to Step 12.
YES (Continuity exists between terminal 11 or terminal
17 and body ground) : Go to Step 13.
YES (Continuity exists between terminal 28 or terminal
27 and body ground) : Go to Step 14.
NO : Go to Step 10.
AC306403
19
2
18
1
8
9
7
6
5
4
3
10
11
25
15
16
17
27
28
26
12
13
14
23
24
22 21 20
AC
ABS-ECU
MB991970
CHECK CONNECTOR
A-02 HARNESS
CONNECTOR
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-33
STEP 10. 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 the relevant signal and
ground terminals in the wheel speed sensor circuit.
• DTC C1201 is set: Between signal terminal 9 and
ground terminal 10
• DTC C1206 is set: Between signal terminal 26 and
ground terminal 16
• DTC C1211 is set: Between signal terminal 11 and
ground terminal 17
• DTC C1216 is set: Between signal terminal 28 and
ground terminal 27
Standard Value: 1.24
− 1.64 kΩ
Q: Is the resistance between terminals 16 and 26, 9 and 10,
27 and 28, or 11 and 17 within the standard value?
YES (When resistances between all terminals are within
the standard value) : Go to Step 15.
NO (When resistance between terminals 9 and 10 is not
within the standard value) : Go to Step 11.
NO (When resistance between terminals 16 and 26 is not
within the standard value) : Go to Step 12.
NO (When resistance between terminals 11 and 17 is not
within the standard value) : Go to Step 13.
NO (When resistance between terminals 27 and 28 is not
within the standard value) : Go to Step 14.
AC306403
19
2
18
1
8
9
7
6
5
4
3
10
11
25
15
16
17
27
28
26
12
13
14
23
24
22 21 20
AD
ABS-ECU
MB991970
CHECK CONNECTOR
A-02 HARNESS
CONNECTOR
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-34
STEP 11. Check ABS-ECU connector A-02 and wheel
speed sensor <front: RH> connector A-01 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Are ABS-ECU connector A-02 and wheel speed sensor
<front: RH> connector A-01 damaged?
YES : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
NO : Open or short circuit may be present in the front right
wheel speed sensor circuit. Repair the wiring harness
between ABS-ECU connector A-02 (terminals 9 and
10) and front right wheel speed sensor A-01
(terminals 2 and 1).Then go to Step 16.
AC306406
19
2
18
1
8
9
7
6
5
4
3
10
11
25
15
16
17
27
28
26
12
13
14
23
24
22 21 20
A-02 HARNESS CONNECTOR
(HARNESS SIDE)
AB
A-02 (GR)
CONNECTOR: A-02
HYDRAULIC UNIT
(WITH BUILT-IN ABS-ECU)
AC305206
A-01 (B)
CONNECTOR: A-01
AV
A-01 HARNESS
CONNECTOR
(HARNESS SIDE)
2 1
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-35
STEP 12. Check ABS-ECU connector A-02 and wheel
speed sensor <front: RH> connector A-04 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Are ABS-ECU connector A-02 and wheel speed sensor
<front: LH> connector A-04 damaged?
YES : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
NO : Open or short circuit may be present in the front right
wheel speed sensor circuit. Repair the wiring harness
between ABS-ECU connector A-02 (terminals 16 and
26) and front left wheel speed sensor A-04 (terminals
1 and 2).Then go to Step 16.
AC306406
19
2
18
1
8
9
7
6
5
4
3
10
11
25
15
16
17
27
28
26
12
13
14
23
24
22 21 20
A-02 HARNESS CONNECTOR
(HARNESS SIDE)
AB
A-02 (GR)
CONNECTOR: A-02
HYDRAULIC UNIT
(WITH BUILT-IN ABS-ECU)
AC305210AJ
A-04(B)
CONNECTOR: A-04
A-04 HARNESS
CONNECTOR
(HARNESS SIDE)
2 1
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