Mitsubishi 380. Manual — part 22
SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)
54B-85
STEP 7. Check the wiring harness between front-ECU
connector A-12X (terminal 21) and ground.
Q: Is the wiring harness between front-ECU connector
A-12X (terminal 21) and ground in good condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. The system
should communicate with the front-ECU normally.
STEP 8. Check ETACS-ECU connector C-218 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-218 in good condition?
YES : Go to Step 9.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. The system should communicate with the
front-ECU normally.
STEP 9. Check the wiring harness between front-ECU
connector A-12X (terminal 30) and ETACS-ECU connector
C-218 (terminal 53).
AC305977
CONNCTOR: A-12X
AI
21
22
23
24
25
26
27
28
29
30
31
RELAY BOX SIDE
54DB006A
CONNECTORS: C-218
JUNCTION BLOCK
(REAR VIEW)
C-218 (GR)
HARNESS SIDE
45
46
48 47
49
50
59
51
60
52
53
62
65
61
54
63
56
68
64
67 66
57
58
55
AC305977
CONNCTOR: A-12X
AI
21
22
23
24
25
26
27
28
29
30
31
RELAY BOX SIDE
54DB006A
CONNECTORS: C-218
JUNCTION BLOCK
(REAR VIEW)
C-218 (GR)
HARNESS SIDE
45
46
48 47
49
50
59
51
60
52
53
62
65
61
54
63
56
68
64
67 66
57
58
55
SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)
54B-86
NOTE: Also check intermediate connector C-29 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-29 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection
.
Q: Is the wiring harness between front-ECU connector
A-12X (terminal 30) and ETACS-ECU connector C-218
(terminal 53) in good condition?
YES : Go to Step 10.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. The system
should communicate with the front-ECU normally.
STEP 10. Replace the front-ECU.
(1) Replace the front-ECU.
(2) The system should communicate with the front-ECU
normally.
Q: Can the system communicate with the front-ECU?
YES : No action is necessary and testing is complete.
NO : Replace the ETACS-ECU. The system should
communicate with the front-ECU normally.
54DB052A
C-29
C-29
CONNECTOR: C-29
SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)
54B-87
INSPECTION PROCEDURE A-5: Communication with the Sunroof-ECU is not Possible.
.
CIRCUIT OPERATION
• Power to the sunroof motor assembly is supplied
through fusible link (5).
• When the ignition switch (IG2) signal is on, the
sunroof motor assembly is ready to operate.
• Refer to circuit diagrams GROUP-
• Refer to configuration diagrams GROUP-
.
TECHNICAL DESCRIPTION (COMMENT)
The power supply circuit or the communication circuit
to the sunroof motor assembly or the sunroof motor
assembly may be defective.
.
TROUBLESHOOTING HINTS
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
• The sunroof motor assembly may be defective
• The ETACS-ECU may be defective
AC305015
AC305015AF
FUSIBLE LINK (5)
54DB061A
C-212
C-215
C-205
JUNCTION BLOCK
(FRONT VIEW)
CONNECTORS: C-205, C-212, C-215
54DB002A
CONNECTOR: C-218
C-218 (GR)
HARNESS SIDE
45
46
48 47
49
50
59
51
60
52
53
62
65
61
54
63
56
68
64
67 66
57
58
55
54DB062A
CONNECTOR: D-04
SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)
54B-88
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991958: DIAGNOSTIC TOOL (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991910: MUT-III Main Harness A
STEP 1. Check sunroof motor assembly connector D-04
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is sunroof motor assembly connector D-04 in good
condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. The system should communicate with the
sunroof-ECU normally.
STEP 2. Check the fusible link (5) line of power supply
circuit to the sunroof motor assembly. Measure the voltage
at sunroof motor assembly connector D-04.
(1) Disconnect sunroof motor assembly connector D-04 and
measure the voltage available at the wiring harness side of
the connector.
(2) Measure the voltage between terminal 1 and ground.
• The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 4.
NO : Go to Step 3.
54DB063A
CONNECTOR: D-04
HARNESS SIDE
54DB063A
CONNECTOR: D-04
HARNESS SIDE
AC209365FG
CONNECTOR D-04
(HARNESS SIDE)
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