Mitsubishi 380. Manual — part 724
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-307
STEP 5. Check the CAN bus lines (communication line
only) between joint connector (3) and the combination
meter. Measure the resistance at 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.
16DB476A
HARNESS SIDE
C-101
CONNECTORS: C-02, C-101
C-02
C-02
C-101
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-308
(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, go to
Step 6.
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
CONTROLLER AREA NETWORK (CAN)
54C-309
STEP 6. Check the terminator resistor inside the
combination meter. Measure the resistance at combination
meter connector C-101.
CAUTION
A digital multimeter should be used. For details refer to
(1) Disconnect combination meter C-101, and measure the
resistance at the component side of combination meter
connector C-101.
(2) Measure the resistance between combination meter
connector terminals 14 and 15.
OK: 120
± 20 Ω
Q: Does the resistance measure 120
± 20 Ω?
YES : If the resistance measures 120
± 20 Ω, diagnose CAN
bus lines thoroughly by referring to
<Vehicles with multi-center display >.
NO : If the resistance does not measure 120
± 20 , replace
the combination meter.
STEP 7. Check ENGINE-ECU connector B-21, A/T-ECU
connector B-19 and ABS-ECU connector A-02 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
NOTE: when diagnosing CAN-BUS on vehicles with
manual transmission (M/T), disregard A/T-ECU and it’s wir-
ing circuits and check between ABS-ECU and
ENGINE-ECU only.
16DB499A
CONNECTOR: C-101
HARNESS SIDE
AC204582BY
COMPONENT SIDE: C-101
G
11
22
17
3
14
G
12
1
13
2
15
4
16
5
18
7
6
19
8
10
21
20
9
TEST
HARNESS
TEST HARNESS
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-310
CAUTION
The strand end of the twisted wire should be within 10 cm
(4 inches) from the connector. For details refer to
Q: Are ENGINE-ECU connector B-21, A/T-ECU connector
B-19 and ABS-ECU connector A-02 in good condition?
YES : Go to Step 8.
NO : Repair the damaged parts.
16DB407A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
A/T
CONTROL
UNIT
16DB402A
A-02 (GR)
CONNECTOR: A-02
A-02 HARNESS CONNECTOR:
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