Mitsubishi Galant (2004+). Manual — part 225
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-91
STEP 4. Check the wiring harness between front-ECU
connector A-11X (terminal 5) and the battery.
Q: Is the wiring harness between front-ECU connector
A-11X (terminal 5) and the battery 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 5. Check front-ECU connector A-12X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is front-ECU connector A-12X in good condition?
YES : Go to Step 6.
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 6. Check the ground circuit to the front-ECU.
Measure the resistance at front-ECU connector A-12X.
(1) Disconnect front-ECU connector A-12X and measure the
resistance available at the relay box side of the connector.
(2) Measure the resistance value between terminal 21 and
ground.
• The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 8.
NO : Go to Step 7.
AC305977AH
CONNECTOR: A-11X
RELAY BOX SIDE
AC305977
CONNCTOR: A-12X
AI
21
22
23
24
25
26
27
28
29
30
31
RELAY BOX SIDE
AC305977
CONNCTOR: A-12X
AI
21
22
23
24
25
26
27
28
29
30
31
RELAY BOX SIDE
AC209364CM
CONNECTOR A-12X
(RELAY BOX SIDE)
24
29
30
31
28 27
25
26
21
23 22
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-92
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 59).
AC305977
CONNCTOR: A-12X
AI
21
22
23
24
25
26
27
28
29
30
31
RELAY BOX SIDE
AC305413AN
CONNECTOR: C-218
JUNCTION BLOCK
(REAR VIEW)
C-218 (GR)
HARNESS SIDE
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
AC305977
CONNCTOR: A-12X
AI
21
22
23
24
25
26
27
28
29
30
31
RELAY BOX SIDE
AC305413AN
CONNECTOR: C-218
JUNCTION BLOCK
(REAR VIEW)
C-218 (GR)
HARNESS SIDE
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-93
NOTE: Also check joint connector C-03 and intermediate con-
nector C-29 for loose, corroded, or damaged terminals, or ter-
minals pushed back in the connector. If joint connector C-03 or
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 59) 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.
AC305232
CONNECTOR: C-03, C-29
C-03
C-29
C-03
C-29
AL
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-94
INSPECTION PROCEDURE A-5: Communication with the Sunroof-ECU is not Possible.
IGNITION
SWITCH (IG2)
SUNROOF MOTOR
ASSEMBLY
SUNROOF-ECU
ETACS-ECU
FUSIBLE
LINK
5
JOINT
CONNECTOR
(2)
JUNCTION
BLOCK
JUNCTION
BLOCK
Sunroof Motor Assembly (Sunroof-ECU) and SWS Communication Circuit
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