Mitsubishi 380. Manual — part 679
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-127
(1) Disconnect intermediate connector C-29 and ABS-ECU
connector A-02, and measure the voltage at the male side
of intermediate connector C-29 (at front wiring harness
side).
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between intermediate connector
terminal 12 and body ground.
OK: 1.0 V or less
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
Q: Does the voltage measure 1.0 V or less?
YES : If the voltage measures 1.0 V or less, go to Step 50.
NO : If the voltage measures more than 1.0 V, repair the
wiring harness between intermediate connector C-29
and ABS-ECU connector.
16DB402A
A-02 (GR)
CONNECTOR: A-02
A-02 HARNESS CONNECTOR:
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
GA
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-128
STEP 50. Check the CAN_L line (communication line only)
between the A/T-ECU connector and ABS-ECU connector
for a short to the power supply. Measure voltage at
A/T-ECU connector B-19.
• Refer to circuit diagrams GROUP-
• Refer to configuration diagrams GROUP-
NOTE: When diagnosing CAN BUS on vehicles with
manual transmission (M/T) please disregard A/T ECU and
its circuits.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-129
(1) Disconnect A/T-ECU connector B-19 and ABS-ECU
connector A-02, and measure the voltage at the harness
side of A/T-ECU connector B-19.
(2) Turn the ignition switch to the "ON" position.
NOTE: When diagnosing CAN BUS on vehicles with
manual transmission (M/T) please disregard A/T ECU and
its circuits.
16DB402A
A-02 (GR)
CONNECTOR: A-02
A-02 HARNESS CONNECTOR:
16DB480A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
A/T
CONTROL
UNIT
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-130
(3) Measure the voltage between A/T-ECU connector terminal
14 and body ground.
OK: 1.0 V or less
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
Q: Does the voltage measure 1.0 V or less?
YES : If the voltage measures 1.0 V or less, go to Step 51.
NO : If the voltage measures more than 1.0 V, repair the
wiring harness between ENGINE-ECU connector and
ABS-ECU connector.
STEP 51. Check the CAN_L line inside the ABS-ECU for a
short to the power supply. Measure the voltage at
ABS-ECU connector A-02 for loose, corroded or damaged
terminals, or terminals pushed back in the connector.
• Refer to circuit diagrams GROUP-
• Refer to configuration diagrams GROUP-
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.
16DB485A
B-19
TEST
HARNESS
16DB402A
A-02 (GR)
CONNECTOR: A-02
A-02 HARNESS CONNECTOR:
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