Mitsubishi Galant (2004+). Manual — part 420
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-291
STEP 29. Check the CAN_H line inside the ABS-ECU for
short to ground. Measure the resistance at ABS-ECU
connector A-02.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect ABS-ECU connector A-02.
(2) Connect special tool MB991970 (ABS check harness) to
the ABS-ECU and the wiring harness, and measure the
resistance at special tool MB991970 (ABS check harness).
(3) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(4) Disconnect the negative battery terminal.
(5) Measure the resistance between special tool MB991970
(ABS check harness) connector terminal 25 and body
ground.
OK: 1 k
Ω or more
Q: Does the resistance measure 1 k
Ω or more?
YES : If the resistance measures 1 k
Ω or more, diagnose
CAN bus lines thoroughly by referring to
NO : If the resistance measures less than 1 k
Ω, replace the
ABS-ECU.
AC305206
CONNECTOR: A-02
AG
A-02 (GR)
HARNESS SIDE
AC209767
SPECIAL TOOL
MB991970
ABS-
ECU
SPECIAL TOOL MB991970
CONNECTOR
AE
2
19
1
18
25
8
15
16
17
27
28
26
11
9
10
12
13
14
23
24
22 21
7
6
5
4
20
3
MEASUREMENT CONNECTOR
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-292
STEP 30. Check intermediate connector C-29 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
CAUTION
The strand end of the twisted wire should be within 10 cm
(4 inches) from the connector. For details refer to
Q: Is intermediate connector C-29 in good condition?
YES : Go to Step 31.
NO : Repair the damaged parts.
STEP 31. Check the CAN_L-side bus line (communication
line including ECUs) of the front wiring harness for short
to ground. Measure the resistance at intermediate
connector C-29.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect intermediate connector C-29, and measure the
resistance at the male side (at front wiring harness side).
(2) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between intermediate connector
terminal 12 and body ground.
OK: 1 k
Ω or more
Q: Does the resistance measure 1 k
Ω or more?
YES : If the resistance measures 1 k
Ω or more, go to Step
32 .
NO : If the resistance measures less than 1 k
Ω, go to Step
52 .
AC305231AI
CONNECTOR: C-29
AC305231AI
CONNECTOR: C-29
AC209364
2 3
27
32
28
33
16
15
4 5
19
18
29
17
34
7 8
35
22
21
9 10
30
36
31
37
25
24
23
6
20
1
14
26
11
13
12
38
MALE SIDE: C-29
TEST HARNESS
GA
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-293
STEP 32. Check joint connector (3) C-02 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
CAUTION
The strand end of the twisted wire should be within 10 cm
(4 inches) from the connector. For details refer to
Check the joint connector at the wiring harness side for loose,
corroded or damaged terminals, or terminals pushed back in
the connector, and also check the short pin behind the connec-
tor for corrosion, deformation and delamination.
Q: Is joint connector (3) C-02 in good condition?
YES : Go to Step 33.
NO : Repair the damaged parts. Replace the joint
connector as necessary.
AC305231AP
CONNECTOR: C-02
AC209350
1
12
2
13
3
14
4
15
5
16
6
17
7
18
8
19
9
20
10
21
11
22
AB
SHORT PIN
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-294
STEP 33. Check the CAN_L line (communication line
including the combination meter) between joint connector
(3) and the combination meter connector for short to
ground. Measure the resistance at joint connector (3) C-02.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect joint connector (3) C-02, and measure the
resistance at the wiring harness side of joint connector (3)
C-02.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between joint connector (3)
terminal 15 and body ground.
OK: 1 k
Ω or more
Q: Does the resistance measure 1 k
Ω or more?
YES : If the resistance measures 1 k
Ω or more, go to Step
35 .
NO : If the resistance measures less than 1 k
Ω, go to Step
34 .
AC305231AP
CONNECTOR: C-02
AC209364IG
11
22
10
21
9
20
8
19
7
18
6
17
5
16
4
15
3
14
2
13
1
12
HARNESS SIDE: C-02
TEST
HARNESS
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