Mitsubishi Galant 9G. Manual — part 1347
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-492
STEP 6. Using scan tool MB991958, diagnose the CAN bus
line (Disconnect combination meter connector C-101, and
check the combination meter system).
(1) Disconnect combination meter connector C-101.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose CAN bus lines, and check if the MUT-III screen is
as shown in the illustration.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect combination meter connector C-101.
Q: Does the MUT-III screen correspond to the illustration?
YES : If the MUT-III screen corresponds to the illustration,
go to Step 7.
NO : If the MUT-III screen does not correspond to the
illustration, go to Step 8.
AC305231AQ
CONNECTOR: C-101
HARNESS SIDE
AC306074
: Red section on screen
AC
PCM
METER
-ECU
MUT
ETACS
-ECU
AC-ECU
SRS-ECU
ABS-ECU
J/C
DIAGNOSIS
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CONTROLLER AREA NETWORK (CAN)
54C-493
STEP 7. Check the CAN bus lines between joint connector
(3) and the combination meter. Measure the resistance
between joint connector (3) C-02 and combination meter
connector C-101.
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 combination meter
connector C-101, and measure the resistance between
each wiring harness side connector.
(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.
AC305232
HARNESS SIDE
C-101
CONNECTORS: C-02, C-101
AE
C-02
C-02
C-101
DIAGNOSIS
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CONTROLLER AREA NETWORK (CAN)
54C-494
(4) Measure the resistance between joint connector (3)
terminal 15 and combination meter connector terminal 15.
OK: 2 ohms or less
(5) Measure the resistance between joint connector (3)
terminal 4 and combination meter connector terminal 14.
OK: 2 ohms or less
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
Q: Do all the resistances measure 2 ohms or less?
YES : If all the resistances measure 2 ohms or less, power
supply to the combination meter may be suspected.
Diagnose the combination meter by referring to
GROUP 54A, Combination meter assembly
NO : If either of the resistances measures more than 2
ohms or all the resistances measure more than 2
ohms, repair the wiring harness between joint
connector (3) and the combination meter connector.
AC204582
HARNESS SIDE: C-02
BZ
11
22
10
21
9
20
8
19
7
18
6
17
5
16
4
15
3
14
2
13
1
12
G
G
22
11
5
16
19
20
21
17
18
8
10 9
7 6
13
1514
12
2
4 3
1
TEST
HARNESS
HARNESS SIDE: C-101
TEST
HARNESS
AC204582
HARNESS SIDE: C-02
TEST
HARNESS
11
22
10
21
9
20
8
19
7
18
6
17
5
16
4
15
3
14
2
13
1
12
G
G
22
11
5
16
19
20
21
17
18
8
10 9
7 6
13
1514
12
2
4 3
1
TEST
HARNESS
HARNESS SIDE: C-101
CA
DIAGNOSIS
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CONTROLLER AREA NETWORK (CAN)
54C-495
STEP 8. Check ETACS-ECU connector C-218 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 ETACS-ECU connector C-218 in good condition?
YES : Go to Step 9.
NO : Repair the damaged parts.
STEP 9. Using scan tool MB991958, diagnose the CAN bus
line (Disconnect ETACS-ECU connector C-218, and check
the ETACS-ECU system).
(1) Disconnect ETACS-ECU connector C-218.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose CAN bus lines, and check if the MUT-III screen is
as shown in the illustration.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Connect ETACS-ECU connector C-218.
Q: Does the MUT-III screen correspond to the illustration?
YES : If the MUT-III screen corresponds to the illustration,
go to Step 10 .
NO : If the MUT-III screen does not correspond to the
illustration, go to Step 11.
AC305413
C-218 (GR)
CONNECTOR: C-218
AI
HARNESS SIDE
JUNCTION BLOCK
(REAR VIEW)
68
74
63
66
72
73
67
65 64
61
70
71
62
69
60
57
58
59
56 55
52
54 53
51
AC305413
C-218 (GR)
CONNECTOR: C-218
AI
HARNESS SIDE
JUNCTION BLOCK
(REAR VIEW)
68
74
63
66
72
73
67
65 64
61
70
71
62
69
60
57
58
59
56 55
52
54 53
51
AC306074
: Red section on screen
AD
MUT
ETACS
-ECU
AC-ECU
SRS-ECU
ABS-ECU
J/C
METER
-ECU
PCM
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