Mitsubishi 380. Manual — part 682
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-138
(4) Measure the resistance between data link connector
terminal 6 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 3
.
NO : If the resistance measures less than 1 k
Ω, go to Step
AC209364
Y
8
16
15
7
5
1314
6
12
4
2
1011
3
9
1
AC209364
AC209364
AC209364
AC209364
AC209364HT
HARNESS SIDE: C-125
TEST
HARNESS
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-139
STEP 3. Check the CAN_L-side bus line (communication
line including ECUs) for short to ground. Measure the
resistance 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 ENGINE- ECU connector B-21 and combination
meter connector C-101, and measure the resistance at the
harness side of data link connector C-125.
(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.
16DB400A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
16DB475A
CONNECTORS: C-101, C-125
C-101
C-125
C-125 (B)
C-101 HARNESS SIDE
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-140
(4) Measure the resistance between data link connector
terminal 14 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, go to Step
27.
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.
AC209364
Y
8
16
15
7
5
1314
6
12
4
2
1011
3
9
1
AC209364HU
HARNESS SIDE: C-125
TEST
HARNESS
52DB014A
CONNECTOR: C-29
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-141
STEP 5. Check the CAN_H-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 11 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 6
.
NO : If the resistance measures less than 1 k
Ω, go to Step
23.
52DB014A
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
AC209364
MALE SIDE: C-29
TEST
HARNESS
HV
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