Mitsubishi Montero (2004+). Manual - part 707
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-85
The scan tool does not show the respective normal
condition for item "FRONT DOOR SW" : Refer to
Inspection Procedure O-5 "ETACS-ECU does not
receive any signal from the driver's or the front
passenger's door switch
The scan tool does not show the respective normal
condition for item "H/L AUTO-CUT" : Refer to Inspection
Procedure J-9 "Headlight automatic shutdown
function does not work normally
."
The scan tool does not show the respective normal
condition for item "BUZZER" : Replace the ETACS-ECU.
The light reminder tone alarm function should now
work normally.
INSPECTION PROCEDURE B-3: Tone Alarm: Seat belt tone alarm function does not work normally.
NOTE: This troubleshooting procedure requires the
use of scan tool MB991958 and SWS monitor kit
MB991862. For details on how to use the SWS mon-
itor, refer to "How to use SWS monitor
.
CIRCUIT OPERATION
The ETACS-ECU operates the seat belt tone alarm
function intermittently according to signals from the
following switches:
• Ignition switch (IG1): ON
• Driver's seat belt switch: ON
The ETACS-ECU operates the seat belt tone alarm
function intermittently under the following conditions:
• Ignition switch: ON or START
• Driver’s seat belt: UNFASTENED
.
TECHNICAL DESCRIPTION (COMMENT)
If the function does not work normally, the input cir-
cuit system from the switches or the ETACS-ECU
may be defective (refer to "CIRCUIT OPERATION").
.
TROUBLESHOOTING HINTS
• The driver's seat belt switch may be defective
• The ETACS-ECU may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
Seat Belt Tone Alarm Function