Mitsubishi Galant 9G. Manual — part 1243
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-76
(3) Measure the voltage between data link connector terminal 6
and body ground.
OK: 4.0 V or less
Q: Does the voltage measure 4.0 V or less?
YES : If the voltage measures 4.0 V or less, go to Step 3.
NO : If the voltage measures more than 4.0 V, go to Step 4.
AC209365
HARNESS SIDE: C-125
TEST
HARNESS
FN
Y
8
16
15
7
5
1314
6
12
4
2
1011
3
9
1
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-77
STEP 3. Check the CAN_L-side bus line (communication
line including ECUs) for a short to the power supply.
Measure the voltage at data link connector C-125.
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 powertrain control module connector B-19 and
combination meter connector C-101, and measure the
voltage at the harness side of data link connector C-125.
(2) Turn the ignition switch to the "ON" position.
AC306248AD
B-19 (B)
CONNECTOR: B-19
PCM
AIR
CLEANER
HARNESS SIDE
AC305232
CONNECTORS: C-101, C-125
AH
C-101
C-125
C-125 (B)
C-101 HARNESS SIDE
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-78
(3) Measure the voltage between data link connector terminal
14 and body ground.
OK: 4.0 V or less
Q: Does the voltage measure 4.0 V or less?
YES : If the voltage measures 4.0 V or less, diagnose CAN
bus lines thoroughly by referring to
NO : If the voltage measures more than 4.0 V, go to Step
STEP 4. 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 5.
NO : Repair the damaged parts.
AC209365
HARNESS SIDE: C-125
FO
TEST
HARNESS
Y
8
16
15
7
5
1314
6
12
4
2
1011
3
9
1
AC305231AI
CONNECTOR: C-29
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-79
STEP 5. Check the CAN_H-side bus line (communication
line including ECUs) of the front wiring harness for a short
to the power supply. Measure the voltage 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
voltage at the male side (at front wiring harness side).
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between intermediate connector
terminal 11 and body ground.
OK: 4.0 V or less
Q: Does the voltage measure 4.0 V or less?
YES : If the voltage measures 4.0 V or less, go to Step 6.
NO : If the voltage measures more than 4.0 V, go to Step
AC305231AI
CONNECTOR: C-29
AC209365
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
AC209365
MALE SIDE: C-29
TEST
HARNESS
FP
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