2005 MITSUBISHI 380 horn

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-196
STEP 10. Check the wiring harness between horn relay
connector A-06X (terminal 4) and horn (HIGH) connector
A-37 (terminal 1).
Q: Is the wiring harness between horn relay connector
A-06X (terminal 4) and horn (HIGH) connector A-37
(terminal 1) in good condition?
YES : Replace the ETACS-ECU. Verify that the horn sounds
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. Verify that
the horn sounds normally.
STEP 11. Check horn connector A-36 (LOW) for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is horn (LOW) connector A-36 in good condition?
YES : Go to Step 12.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the horn sounds normally.
STEP 12. Check the horn (LOW).
Connect the battery as shown, and verify that the horn sounds.
Q: Is the horn normal?
YES : Go to Step 13.
NO : Replace the horn (LOW). Verify that the horn sounds
normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-197
STEP 13. Check horn relay connector A-06X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is horn relay connector A-06X 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. Verify that the horn sounds normally.
STEP 14. Check the wiring harness between horn relay
connector A-06X (terminal 4) and horn (LOW) connector
A-36 (terminal 1).
Q: Is the wiring harness between horn relay connector
A-06X (terminal 4) and horn (LOW) connector A-36
(terminal 1) in good condition?
YES : Replace the ETACS-ECU. Verify that the horn sounds
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. Verify that
the horn sounds normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-198
STEP 15. Check horn relay connector A-06X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is horn relay connector A-06X in good condition?
YES : Go to Step 16.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the horn sounds normally.
STEP 16. Check the horn relay.
Q: Is the horn relay normal?
YES : Go to Step 17.
NO : Replace the horn relay. Verify that the horn sounds
normally.
BATTERY
VOLTAGETESTER
CONNECTIONSPECIFIED
CONDITION
Not applied 1
4 Open circuit
Connect
terminal 2 to the
positive battery
terminal
Connect
terminal 3 to the
negative battery
terminal1
4 Less than 2 ohms

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-199
STEP 17. Check the battery power supply circuit to the
horn relay. Measure the voltage at horn relay connector
A-06X.
(1) Disconnect horn relay connector A-06X and measure the
voltage available at the relay box side of the connector.
(2) Measure the voltage between terminal 1 and ground, and
also 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 19.
NO : Go to Step 18.
STEP 18. Check the wiring harness between horn relay
connector A-06X (terminals 1 and 2) and the battery.
Q: Is the wiring harness between horn relay connector
A-06X (terminals 1 and 2) 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. Verify that
the horn sounds normally.
STEP 19. Check ETACS-ECU connector C-217 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-217 in good condition?
YES : Go to Step 20.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the horn sounds normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-200
STEP 20. Check the wiring harness between horn relay
connector A-06X (terminal 3) and ETACS-ECU connector
C-217 (terminal 44).
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 damaged component(s) as described in GROUP
00E, Harness Connector Inspection P.00E-2.
Q: Is the wiring harness between horn relay connector
A-06X (terminal 3) and ETACS-ECU connector C-217
(terminal 44) in good condition?
YES : Go to Step 21.
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. Verify that
the horn sounds normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-201
STEP 21. Check the wiring harness between horn relay
connector A-06X (terminal 4) and horn (HIGH) connector
A-37 (terminal 1).
Q: Is the wiring harness between horn relay connector
A-06X (terminal 4) and horn (HIGH) connector A-37
(terminal 1) in good condition?
YES : Replace the ETACS-ECU. Verify that the horn sounds
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. Verify that
the horn sounds normally.

CHECK AT ECU TERMINAL
SIMPLIFIED WIRING SYSTEM (SWS)54B-481
22 Output to door unlock (for
driver's door)When driver's door lock actuator
is operating (doors unlocked)Battery positive voltage
23, 24
25 Input of door lock key cylinder
switch (UNLOCK) signalDoor lock key cylinder switch:
UNLOCK0 V
26
28
29 Input of rear door lock actuator
(UNLOCK) signalRear door lock actuator:
UNLOCK0 V
30 Input of key reminder switch
signalKey reminder switch: ON (when
ignition key is removed)0 V
31, 32
33 Input of door lock switch (LOCK)
signalDoor lock switch (incorporated in
power window switch): LOCK0 V
34 Input of door lock switch
(UNLOCK) signalDoor lock switch (incorporated in
power window switch): UNLOCK0 V
35 Input from rear door switch (RH) Rear door switch (RH): ON (rear
door (RH) open)0 V
36 Input of driver's door lock
actuator (UNLOCK) signalDriver's door lock actuator:
UNLOCK0 V
37 Input from trunk lid latch
assemblyTrunk lid latch: ON (trunk open) 0 V
38 Ground (for sensor) Always 0 V
39
41
42 Input of door lock key cylinder
switch (LOCK) signalDoor lock key cylinder switch:
LOCK0 V
43 Input of front passenger's door
lock actuator (UNLOCK) signalFront passenger’s door lock
actuator: UNLOCK0 V
44 Output to horn relay When a horn sounds by the
keyless entry horn answerback
function2 V or less
45 Output to data link connector When DTC sets 0
12 V (pulse signal)
When input check signal is
output0
12 V (when input
pulse signal is
fluctuating)
46 Output to trunk lamp When trunk lid latch on. 0 V
47
48 Input of fog lamp switch signal Fog lamp switch: ON 0 V
49 Input of hazard warning lamp
switch signalHazard warning lamp switch: ON
(When the switch is depressed)0 V
50 Ground (for sensor) Always 0 V
51 Key Ring Antenna (+) 0 V 0 V
52 Key Ring Antenna (-) 0 V 0 V
53 SWS communication line Always 0
12 V (pulse signal) TERMINAL
NO.INSPECTION ITEM INSPECTION CONDITION NORMAL VALUE

ON-VEHICLE SERVICE
SIMPLIFIED WIRING SYSTEM (SWS)54B-489
Keyless entry and
power door lock
systemKeyless entry system confirmation
by hornThe horn answerback honking conditions can
be set in the following ways.
a. Horn sounds
b. Horn sounds if doors are already locked
c. Horn does not sound (default)
Keyless entry system confirmation
by turn-signal lampsThe hazard answerback flashing conditions
can be set in the following ways.
a. Locking and unlocking (default)
b. Locking only
c. Unlocking only
d. No indication
Time until automatic relocking after
unlock operation using keyless
entry systemThe timed lock period after unlocking with the
keyless entry transmitter can be set to the
following times.
a. 30 seconds (default)
b. 60 seconds
c. 120 seconds
d. 180 seconds
Unlock operation using keyless
entry system or door keyThe unlocking operations after unlocking with
or without a key can be set in the following
ways.
a. Unlock driver's door on first unlock
operation, and unlock all doors on second
unlock operation (default)
b. Unlock all doors on first unlock operation
Buzzers Turn-signal buzzer The turn-signal buzzer function can be
activated or deactivated. (OFF by default)
Door-ajar warning buzzer The door ajar warning buzzer function can be
activated or deactivated (ON by default).
Default Initialization of above mentioned functions ITEM (multi-center display) ADJUSTMENT DETAILS