Sunroof MITSUBISHI 380 2005 User Guide

DIAGNOSTIC TROUBLE CODE PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-37
STEP 3. Use diagnostic tool MB991958 to select "ECU
COMM Check" on the SWS monitor display.
Check the following ECUs:
Sunroof-ECU
ETACS-ECU
Connect special tool MB991910 before connecting special
tool MB991812. Be sure to connect special tool MB991806
after turning on special tool MB991824.
(1) Connect the SWS monitor. Refer to "How to connect SWS
monitor P.54B-13."
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Operate diagnostic tool MB991958 according to the
procedure below to display "ECU COMM Check."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "ECU COMM Check."
(4) DIAGNOSTIC TOOL MB991958 should show "OK" on the
"ECU COMM Check" menus for both the "SUNROOF ECU"
and the "ETACS ECU" menus.
Q: Are "OK" displayed for both the "SUNROOF ECU" and
"ETACS ECU" menus?
"OK" are displayed for all the items : It is determined that
there is an intermittent malfunction such as poor
engaged connector(s) or open circuit (Refer to
GROUP 00, How to Cope with Intermittent
Malfunction P.00-14).
"NG" is displayed for the "SUNROOF ECU" menu :
Refer to Inspection Procedure A-5 "communication
with the sunroof-ECU is not possible P.54B-87."
"NG" is displayed for the "ETACS ECU" menu : Refer to
Inspection Procedure A-3 "Communication with the
ETACS-ECU is not possible P.54B-74."

SYMPTOM CHART
SIMPLIFIED WIRING SYSTEM (SWS)54B-57
SYMPTOM CHARTM1549000801159
ECU COMMUNICATION SYSTEM
FUNCTION SYSTEM
SYMPTOM INSPECTION
PROCEDUREREFERENCE
PA G E
Communication with the SWS monitor kit is not possible. A-1
P.54B-63
Communication with the column switch (column-ECU) is not possible. A-2
P.54B-68
Communication with the ETACS-ECU is not possible. A-3
P.54B-74
Communication with the front-ECU is not possible. A-4
P.54B-80
Communication with the sunroof-ECU is not possible. A-5
P.54B-87
SYSTEM SYMPTOM INSPECTION
PROCEDUREREFERENCE
PA G E
Tone alarm General description concerning the tone alarm
P.54B-94
Light reminder tone alarm function does not work
normally.B-2
P.54B-98
Seat belt tone alarm function does not work
normally.B-3
P.54B-101
Door ajar warning buzzer function does not work
normally.B-4
P.54B-106
The multi center display does not sound normally
when it is operated. B-5
P.54B-112
Turn-signal lamp buzzer function does not work
normally.B-6
P.54B-116
Central door locking
systemGeneral description concerning central door
locking system
P.54B-118
The central door locking system does not work at
all.C-1
P.54B-122
Some doors do not lock or unlock. C-2
P.54B-129
All the doors do not lock or unlock with just the
door lock switch operation.C-3
P.54B-142
All the doors do not lock or unlock with just the
door lock key cylinder key operation.C-4
P.54B-143
Forgotten key prevention function does not work
normally.C-5
P.54B-144

SYMPTOM CHART
SIMPLIFIED WIRING SYSTEM (SWS)54B-58
Power windows General description concerning the power
windowsP.54B-148
Power windows do not work at all. D-1
P.54B-151
The power window timer function does not work
normally.D-2
P.54B-161
Only the front door window (LH) does not work by
operating power window main switch.D-3
P.54B-164
Power windows do not work normally by operating
the front passenger's or rear passenger's sub
switches.D-4
P.54B-167
Front or rear passenger's power windows do not
work at all by operating the power window main
switch.D-5
P.54B-187
Keyless entry system General description concerning the keyless entry
system
P.54B-187
Keyless entry system does not operate. E-1
P.54B-191
The dome lamp, the turn-signal lamps and the
horn do not operate through the answerback
function.E-2
P.54B-193
Encrypted code cannot be registered. E-3
P.54B-202
The trunk is not opened when the keyless entry
transmitter "TRUNK" button is operated.E-4
P.54B-205
Sunroof General description concerning the sunroof
P.54B-209
Sunroof does not operate. F-1
P.54B-210
Any of the sunroof switch positions is defective. F-2
P.54B-219
Sunroof timer function does not work normally. F-3
P.54B-220
Windshield wiper and
washerGeneral description concerning the windshield
wiper and washer
P.54B-223
The windshield wiper do not work at all. G-1
P.54B-226
The windshield wipers do not work when the
windshield wiper switch is at "INT" or "MIST"
position or the windshield washer switch is at "ON"
position. However, the wipers work at low speed
when the windshield wiper switch is at "LO" or "HI."G-2
P.54B-234
All of the windshield wiper switch positions are
defective.G-3
P.54B-236
Windshield wipers does not stop at the
predetermined park position.G-4
P.54B-240
The windshield intermittent wiper interval cannot
be adjusted by using the variable intermittent wiper
control switch.G-5
P.54B-246
The windshield intermittent wiper interval is not
changed according to the vehicle speed.G-6
P.54B-248
The windshield washer does not work. G-7
P.54B-251 SYSTEM SYMPTOM INSPECTION
PROCEDUREREFERENCE
PA G E

INPUT SIGNAL CHART
SIMPLIFIED WIRING SYSTEM (SWS)54B-61
INPUT SIGNAL CHARTM1549024200501
SWS MONITOR
If a problem is found in the Data List inspection,
observe the table below.
SYMPTOM INSPECTION
PROCEDUREREFERENCE
PA G E
ETACS-ECU does not receive any signal from the ignition switch (ACC). M-1
P.54B-405
ETACS-ECU does not receive any signal from the ignition switch (IG1). M-2
P.54B-408
ETACS-ECU does not receive any signal from the fog lamp switch.M-3
P.54B-410
ETACS-ECU does not receive any signal from the front door switches. M-4
P.54B-413
Column switch ETACS-ECU does not receive any signal from the tail
lamp switch.M-5
P.54B-420
ETACS-ECU does not receive any signal from the
headlamp switch.
ETACS-ECU does not receive any signal from the
passing lamp switch.
ETACS-ECU does not receive any signal from the
dimmer switch.
ETACS-ECU does not receive any signal from the
turn-signal lamp switch.
ETACS-ECU does not receive any signal from the
windshield mist wiper switch.M-6
P.54B-423
ETACS-ECU does not receive any signal from the
windshield intermittent wiper switch.
ETACS-ECU does not receive any signal from the
windshield low-speed wiper switch.
ETACS-ECU does not receive any signal from the
windshield high-speed wiper switch.
ETACS-ECU does not receive any signal from the
variable intermittent wiper control switch.M-7
P.54B-426
ETACS-ECU does not receive any signal from the
windshield washer switch.M-6
P.54B-423
Sunroof switch ETACS-ECU does not receive any signal from the up,
open or close/down switch.M-8
P.54B-429

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-90
Refer to configuration diagrams GROUP-80
.
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

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
P.00E-2. 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.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-89
STEP 3. Check the wiring harness between sunroof motor
assembly connector D-04 (terminal 1) and fusible link (5).

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-90
NOTE: Also check junction block connectors C-212, C-215 and
intermediate connector C-27 for loose, corroded, or damaged
terminals, or terminals pushed back in the connector. If junction
block connector C-212, C-215 or intermediate connector C-27
is damaged, repair or replace the damaged component(s) as
described in GROUP 00E, Harness Connector Inspection
P.00E-2.
Q: Is the wiring harness between sunroof motor assembly
connector D-04 (terminal 1) and fusible link (5) 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 sunroof-ECU normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-91
STEP 4. Check the ignition switch (IG2) 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) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 2 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 6.
NO : Go to Step 5.
STEP 5. Check the wiring harness between sunroof motor
assembly connector D-04 (terminal 2) and ignition switch
(IG2).

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-92
NOTE: Also check junction block connectors C-215 and C-205
for loose, corroded, or damaged terminals, or terminals pushed
back in the connector. If junction block connector C-215 or
C-205 is damaged, repair or replace the damaged compo-
nent(s) as described in GROUP 00E, Harness Connector
Inspection P.00E-2.
Q: Is the wiring harness between sunroof motor assembly
connector D-04 (terminal 2) and the ignition switch (IG2)
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 sunroof-ECU normally.
STEP 6. Check the ground circuit to the sunroof motor
assembly. Measure the resistance at sunroof motor
assembly connector D-04.
(1) Disconnect sunroof motor assembly connector D-04 and
measure the resistance available at the wiring harness side
of the connector.
(2) Measure the resistance value between terminal 5 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.