Mitsubishi Montero (2004+). Manual — part 811
INPUT SIGNAL CHART
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-501
<Scan tool or voltmeter>
If a problem is found in the Pulse Check, observe the
table below.
Column Switch ETACS-ECU does not receive any signal from the tail
light switch.
O-6
ETACS-ECU does not receive any signal from the
headlight switch.
ETACS-ECU does not receive any signal from the
passing light switch.
ETACS-ECU does not receive any signal from the
dimmer switch.
ETACS-ECU does not receive any signal from the
turn-signal light switch.
ETACS-ECU does not receive any signal from the
windshield mist wiper switch.
O-7
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
windshield intermittent wiper interval adjusting knob.
O-8
ETACS-ECU does not receive any signal from the
windshield washer switch.
O-7
ETACS-ECU does not receive any signal from the rear
wiper switch.
ETACS-ECU does not receive any signal from the rear
washer switch.
Sunroof
ETACS-ECU does not receive any signal from the up,
open or close/down switch.
O-9
RV meter
ETACS-ECU does not receive any signal from any
control switches.
O-10
SYMPTOM
INSPECTION
PROCEDURE
REFERENCE
PAGE
SYMPTOM
INSPECTION
PROCEDURE
REFERENCE
PAGE
ETACS-ECU does not receive any signal from the key reminder switch. P-1
ETACS-ECU does not receive any signal from the hazard warning light
switch.
P-2
ETACS-ECU does not receive any signal from the driver's seat belt
switch.
P-3
ETACS-ECU does not receive any signal from all the door switches.
P-4
ETACS-ECU does not receive any signal from the driver's, front
passenger's or back door lock key cylinder switch.
P-5
INPUT SIGNAL PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-502
INPUT SIGNAL PROCEDURES
INSPECTION PROCEDURE O-1: ETACS-ECU does not receive any signal from the ignition switch
(ACC).
.
ETACS-ECU does not receive any signal from the driver's, front
passenger's, rear or back door lock actuator switch.
P-6
ETACS-ECU does not receive any signal from the door lock switch
(incorporated in the power window main switch and power window sub
switch).
P-7
ETACS-ECU does not receive an auto-stop signal from the rear wiper
motor.
P-8
ETACS-ECU does not receive any signal from hood switch.
P-9
Transmitter
ETACS-ECU does not receive any signal from the
lock, unlock switch or panic switch.
P-10
SYMPTOM
INSPECTION
PROCEDURE
REFERENCE
PAGE
Ignition switch (ACC) Input Circuit
AC204173
CONNECTOR : D-208
AN
AC204174
CONNECTOR : D-222
AE
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-503
CIRCUIT OPERATION
The ETACS-ECU operates the following equipment
according to signal from the ignition switch (ACC):
• Windshield wiper and washer
• Rear wiper and washer
.
TECHNICAL DESCRIPTION (COMMENT)
If the signal is not normal, the equipment, which is
described in "CIRCUIT OPERATION", does not work
normally.
.
TROUBLESHOOTING HINTS
• 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.)
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
STEP 1. Check ETACS-ECU connector D-222 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector D-222 in good condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. If the equipment, which are described in
"CIRCUIT OPERATION", work normally, the input
signal from the ignition switch (ACC) should be
normal.
AC204174
CONNECTOR : D-222
AB
1
2
3
5
6
4
9 8
121110
13
15 14
16
17
7
19
20
18
JUNCTION BLOCK SIDE
D-222
INPUT SIGNAL PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-504
STEP 2. Check the ignition switch (ACC) circuit to the
ETACS-ECU. Test at ETACS-ECU connector D-222.
(1) Disconnect ETACS-ECU connector D-222 and measure the
voltage available at the junction block side of the connector.
(2) Turn the ignition switch to the "ACC" position.
(3) Measure the voltage between terminal 2 and ground.
• The voltage should equal approximately 12 volts (bat-
tery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Replace the ETACS-ECU. If the equipment, which
are described in "CIRCUIT OPERATION", work
normally, the input signal from the ignition switch
(ACC) should be normal.
NO : Go to Step 3.
STEP 3. Check the wiring harness between ETACS-ECU
connector D-222 (terminal 2) and the ignition switch (ACC).
AC204174
CONNECTOR : D-222
AB
1
2
3
5
6
4
9 8
121110
13
15 14
16
17
7
19
20
18
JUNCTION BLOCK SIDE
D-222
ACX01593
19
20
1817 1615 141312 1110 9 8 7
6 5 4 3 2 1
AB
CONNECTOR D-222
(JUNCTION BLOCK SIDE)
AC204174
CONNECTOR : D-222
AB
1
2
3
5
6
4
9 8
121110
13
15 14
16
17
7
19
20
18
JUNCTION BLOCK SIDE
D-222
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