2005 MITSUBISHI 380 Workshop Manual

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-153
STEP 2. Check the input signal by using "DATA LIST"
menu of the SWS monitor.
Turn the ignition switch to the "ON" position before checking
input signals from the ignition switch (IG1).
(1) Operate the diagnostic tool MB991958 according to the
procedure below to display "ETACS ECU."
a. Select "Interactive Diagnosis."
b. Select "System Select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "Data List."
f. Select "ETACS ECU."
(2) Check that normal conditions are displayed for the items
described in the table below.
Q: Does the diagnostic tool MB991958 display "IG SW
(IG1)" as normal condition?
YES : Go to Step 3.
NO : Refer to Inspection Procedure M-2 "ETACS-ECU
does not receive any signal from the ignition switch
(IG1) P.54B-408."
STEP 3. Check power window relay connector C-203 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is power window relay connector C-203 in good
condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. The power windows function should now
work normally. ITEM NO. ITEM NAME NORMAL CONDITION
ITEM 30 IG SW (IG1) ON

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-154
STEP 4. Check the power window relay.
Q: Is the power window relay normal?
YES : Go to Step 5.
NO : Replace the power window relay. Verify that the
power windows work normally.
STEP 5. Check the battery power supply circuit to the
power window relay. Measure the voltage at power window
relay connector C-203.
(1) Disconnect power window relay connector C-203 and
measure the voltage available at the junction block side of
the connector.
(2) Measure the voltage between terminal 5 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 7.
NO : Go to Step 6. BATTERY
CONNECTIONTESTER
CONNECTIONSPECIFIED
CONDITION
Not applied 4
5 Open circuit
Connect terminal 1
to the positive
battery terminal
Connect terminal 3
to the negative
battery terminal4
5 Less than 2
ohms

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-155
STEP 6. Check the wiring harness between power window
relay connector C-203 (terminal 5) and fusible link (5).
NOTE: Also check junction block connector C-212 for loose,
corroded or damaged terminals, or terminals pushed back in
the connectors. If junction block connector C-212 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 power window relay
connector C-203 (terminal 5) 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 power
windows function should now work normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-156
STEP 7. Check the ground circuit to the power window
relay. Measure the resistance at power window relay
connector C-203.
(1) Disconnect power window relay connector C-203 and
measure the resistance available at the junction block side
of the connector.
(2) Measure the resistance value between terminal 3 and
ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 9.
NO : Go to Step 8.
STEP 8. Check the wiring harness between power window
relay connector C-203 (terminal 3) and ground.
NOTE: Also check junction block connector C-211 for loose,
corroded or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-211 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 power window relay
connector C-203 (terminal 3) 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 power
windows function should now work normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-157
STEP 9. Check power window main switch connector E-04
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is power window main switch connector E-04 in good
condition?
YES : Go to Step 10.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. The power windows function should now
work normally.
STEP 10. Check the ground circuit to the power window
main switch. Measure the resistance at power window
main switch connector E-04.
(1) Disconnect power window main switch connector E-04 and
measure the resistance available at the harness side of the
connector.
(2) Measure the resistance value between terminal 2 and
ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 12.
NO : Go to Step 11.
STEP 11. Check the wiring harness between power window
main switch E-04 (terminal 2) and ground.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-158
NOTE: Also check intermediate connectors C-12 for loose, cor-
roded or damaged terminals, or terminals pushed back in the
connectors. If intermediate connector C-12 is damaged, repair
or replace the damaged component(s) as described in GROUP
00E, Harness Connector Inspection P.00E-2.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-159
Q: Is the wiring harness between power window main
switch connector E-04 (terminal 2) 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 power
windows function should now work normally.
STEP 12. Check the battery power supply circuit to the
power window main switch. Measure the voltage at power
window main switch connector E-04.
(1) Disconnect power window main switch connector E-04 and
measure the voltage available at the harness side of the
connector.
(2) Turn the ignition switch to "ON" position.
(3) Measure the voltage between terminal 10 and ground.
The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Replace the power window main switch. The power
windows function should now work normally.
NO : Go to Step 13.
STEP 13. Check ETACS-ECU connector C-219 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-219 in good condition?
YES : Go to Step 14.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. The power windows function should now
work normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-160
STEP 14. Check the wiring harness between power
window relay connector C-203 (terminal 4) and power
window main switch connector E-04 (terminal 10).
NOTE: Also check junction block connector C-215 and inter-
mediate connectors C-12 for loose, corroded or damaged ter-
minals, or terminals pushed back in the connectors. If junction
block connector C-215 or intermediate connector C-12 is dam-
aged, repair or replace the damaged component(s) as
described in GROUP 00E, Harness Connector Inspection
P.00E-2.
Q: Is the wiring harness between power window relay
connector C-203 (terminal 4) and power window main
switch connector E-04 (terminal 10) in good condition?
YES : Replace the ETACS-ECU. The power windows
function should now work normally.
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 power
windows function should now work normally.