Mitsubishi Montero (2004+). Manual — part 806
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-481
STEP 8. Check the wiring harness between theft-alarm
indicator light connector D-105 (terminal 1) and
ETACS-ECU connector D-224 (terminal 40).
Q: Is the wiring harness between theft-alarm indicator
light connector D-105 (terminal 1) and ETACS-ECU
connector D-224 (terminal 40) 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
theft-alarm indicator light should illuminate, and the
theft-alarm system should be set normally.
AC204170
CONNECTOR : D-105
AL
HARNESS
SIDE
D-105(B)
D-105(B)
1
2
AC204174
CONNECTOR : D-224
AD
D-224(B)
D-224(B)
HARNESS SIDE
21
23
24
22
32
3433
31
26
27
28
3029
38
39
40
36
37
25
35
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-482
STEP 9. Check the input signal by using "DATA LIST"
menu of the SWS monitor.
Satisfy the following conditions to check the driver's and front
passenger's door switches.
• Driver's door: Open (driver's door switch is on)
However, the door should be closed when checking the
front passenger's door switch.
• Front passenger's door: Open (front passenger's door
switch is on)
However, the door should be closed when checking the
driver's door switch.
(1) Connect the special tool. Refer to "How to connect SWS
monitor
(2) Connect SWS monitor kit MB991862 to the data link
connector (13-pin).
(3) Operate scan tool MB991958 according to the procedure
below to display "ETACS ECU."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "DATA LIST."
5. Select "ETACS ECU."
(4) The scan tool should show the following values when each
switch is operated.
NOTE: The scan tool display changes when the driver's or
the front passenger's door is opened. If any of the doors is
open, the system can not be checked correctly.
Q: The scan tool shows the respective normal condition
for item "FRONT DOOR SW."
YES : Go to Step 10.
NO : Refer to Inspection Procedure O-5 "ETACS-ECU
does not receive any signal from the driver's or front
passenger's door switch
ITEM No. ITEM NAME
NORMAL CONDITION
ITEM 32
FRONT DOOR SW ON
AC309091
MB991911
MB991827
MB991824
AB
MB991806
MB991862
DATA LINK
CONNECTOR
(16-PIN)
DATA LINK
CONNECTOR
(13-PIN)
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-483
STEP 10. Check the input signal (by using the pulse check
mode of the monitor.)
Check the input signals from the following switches:
• Key reminder switch
• Driver’s, front passenger’s, rear and back door lock actuator
switch
• Driver’s, front passenger’s and back door lock key cylinder
switch
• Food switch
Operate scan tool MB991958 according to the procedure below
to display "PULSE CHECK."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."
Check if scan tool MB991958 sounds or not.
Q: When the key reminder switch, driver’s, front
passenger’s, rear and back door lock actuator switches,
driver’s, front passenger’s and back door look key
cylinder switches, hood switch are operated, does scan
tool MB991958 sound in all cases?
Scan tool MB991958 is sound in all cases : Replace the
ETACS-ECU. The theft-alarm indicator light should
illuminate, and the theft-alarm system should be set
normally.
Scan tool MB991958 does not sound when the key
reminder switch is operated : Refer to Inspection
Procedure P-1 "ETACS-ECU does not receive any
signal from the key reminder switch
."
Scan tool MB991958 does not sound when the driver's,
the front passenger's, the rear and the back door lock
actuator switches are operated : Refer to Inspection
Procedure P-6 "ETACS-ECU does not receive signals
from the driver's or the front passenger's door lock
actuator switches
Scan tool MB991958 does not sound when the driver's,
the front passenger's, the rear and the back door lock
actuator switches are operated : Refer to Inspection
Procedure P-5 "ETACS-ECU does not receive signals
from the driver's and the front passenger's door lock
ITEM NAME
CONDITION
Key reminder switch
Remove and reinsert the
ignition key
Driver's, front passenger's,
rear and back door lock
actuator switches
Lock or unlock each door
Driver's, front passenger's,
and back door lock key
cylinder switches
Operate the door lock key
cylinder at each door
Hood switch
Open and close the hood
AC307591 AB
MB991911
DATA LINK
CONNECTOR
MB991824
MB991827
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-484
key cylinder switches
Scan tool MB991958 does not sound when the hood
switch is operated : Refer to Inspection Procedure P-9
"ETACS-ECU does not receive any signal from the
hood switch
INSPECTION PROCEDURE N-2: Theft-alarm System: Horn does not sound when the theft-alarm is
triggered.
JOINT
CONNECTOR
(3)
ETACS-
ECU
THEFT-ALARM
HORN RELAY
HORN
RELAY
BATTERY
HORN
(LOW) (HIGT)
THEFT-ALARM
HORN
1
FUSIBLE
LINK
RELAY
BOX
Horn and Theft-alarm Horn Drive Circuit
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