Mitsubishi 380. Manual — part 731
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DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-335
STEP 10. Check the CAN bus lines between joint
connector (3) and the ETACS-ECU. Measure the resistance
between joint connector (3) C-02 and ETACS-ECU
connector C-218.
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 ETACS-ECU
connector C-218, and measure the resistances at the wiring
harness sides of joint connector (3) C-02 and ETACS-ECU
connector C-218.
(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.
16DB474A
C-218 (GR)
CONNECTOR: C-218
HARNESS SIDE
JUNCTION BLOCK
(REAR VIEW)
16DB408A
CONNECTOR: C-02
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DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-336
(4) Measure the resistance between joint connector (3)
terminal 16 and ETACS-ECU connector terminal 67.
OK: 2 ohms or less
(5) Measure the resistance between joint connector (3)
terminal 5 and ETACS-ECU connector terminal 66.
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, power
supply to the ETACS-ECU may be suspected.
Diagnose the ETACS-ECU by referring to GROUP
54B, Diagnosis
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 ETACS-ECU connector.
16DB520A
11
22
10
21
9
20
8
19
7
18
6
17
5
16
4
15
3
14
2
13
1
12
TEST
HARNESS
HARNESS SIDE: C-02
HARNESS SIDE: C-218
TEST
HARNESS
16DB521A
11
22
10
21
9
20
8
19
7
18
6
17
5
16
4
15
3
14
2
13
1
12
TEST
HARNESS
TEST
HARNESS
HARNESS SIDE: C-02
HARNESS SIDE: C-218
![](/vehicles/winoney/bby/jito/tankirif.png)
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-337
STEP 11. Check A/C-ECU connector C-15 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 A/C-ECU connector C-15 in good condition?
YES : Go to Step 12.
NO : Repair the damaged parts.
16DB477A
C-15 HARNESS SIDE
CONNECTOR: C-15
C-15 (B)
![](/vehicles/winoney/bby/jito/icaleroui.png)
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-338
STEP 12. Using diagnostic tool MB991958, diagnose the
CAN bus line (Disconnect A/C-ECU connector C-15, and
check the A/C-ECU system).
(1) Disconnect A/C-ECU connector C-15.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose CAN bus lines, and check if the MUT-III screen is
as shown in the illustration.
NOTE: When diagnosing CAN-BUS on vehi-
cles with manual transmission (M/T), disregard
A/T-ECU and it’s wiring circuits and measure
between ABS-ECU and ENGINE-ECU only.
NOTE: When diagnosing CAN-BUS on vehicles
not equipped with a multi-centre display, disre-
gard the multi-centre display and it’s wiring cir-
cuits.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Connect A/C-ECU connector C-15.
Q: Does the MUT-III screen correspond to the illustration?
YES : If the MUT-III screen corresponds to the illustration,
go to Step 13 .
NO : If the MUT-III screen does not correspond to the
illustration, go to Step 14.
16DB477A
C-15 HARNESS SIDE
CONNECTOR: C-15
C-15 (B)
16DB596A
: Red section on screen
ETACS
-ECU
AC-ECU
SRS-ECU
C.DISPLAY
MUT
J/C
METER
-ECU
ENGINE
ECU
ABS-ECU
A/T-ECU
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