Mitsubishi 380. Manual — part 727
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-319
STEP 13. Check the CAN bus lines inside the ABS-ECU.
Measure the resistance at ABS-ECU connector A-02.
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.
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, and measure the
resistance at the component side of ABS-ECU connector
A-02.
(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 ABS-ECU connector
terminals 14 and 15.
OK: 2 ohms or less
16DB402A
A-02 (GR)
CONNECTOR: A-02
A-02 HARNESS CONNECTOR:
16DB515A
COMPONENT SIDE: A-02
TEST
HARNESS
TEST
HARNESS
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-320
(5) Measure the resistance between ABS-ECU connector
terminals 25 and 26.
OK: 2 ohms or less
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.
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 the voltage measures 2 V or less, go to Step 14 or
diagnose CAN bus lines thoroughly by referring to
<Vehicles with multi-center display >.
NO : Replace the ABS-ECU.
16DB516A
COMPONENT SIDE: A-02
TEST
HARNESS
TEST
HARNESS
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-321
STEP 14. Check the CAN bus lines inside the A/T-ECU.
Measure the resistance at A/T-ECU connector B-19.
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.
• 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 A/T-ECU connector B-19, and measure the
resistance at the component side of A/T-ECU connector
B-19.
(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 A/T-ECU connector B-19
terminals 14 and 5.
OK: 2 ohms or less
16DB480A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
A/T
CONTROL
UNIT
16DB518A
TEST
HARNESS
TEST
HARNESS
COMPONENT SIDE: B-19
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-322
(5) Measure the resistance between A/T-ECU connector B-19
terminals 13 and 4.
OK: 2 ohms or less
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.
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 the voltage measures 2 V or less, diagnose CAN
bus lines thoroughly by referring to
<Vehicles with multi-center display >.
NO : Replace the A/T-ECU.
16DB519A
TEST
HARNESS
TEST
HARNESS
COMPONENT SIDE: B-19
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