Mitsubishi Montero (2002-2004). Manual — part 364
INPUT SIGNAL CHART
TSB Revision
SWS INPUT SIGNAL PROCEDURES
54Bc-3
<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
INPUT SIGNAL PROCEDURES
TSB Revision
SWS INPUT SIGNAL PROCEDURES
54Bc-4
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 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
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
INPUT SIGNAL PROCEDURES
TSB Revision
SWS INPUT SIGNAL PROCEDURES
54Bc-5
.
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
• MB991502: Scan Tool (MUT-II)
STEP 1. 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 2.
AC204173
CONNECTOR : D-208
AN
AC204174
CONNECTOR : D-222
AE
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)
INPUT SIGNAL PROCEDURES
TSB Revision
SWS INPUT SIGNAL PROCEDURES
54Bc-6
STEP 2. 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 3.
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.
STEP 3. Check the wiring harness between ETACS-ECU
connector D-222 (terminal 2) and the ignition switch (ACC).
NOTE: Also check junction block connector D-208 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector D-208 is damaged,
repair or replace the damaged component(s) as described in
GROUP 00E, Harness Connector Inspection
Q: Is the wiring harness between ETACS-ECU connector D-
222 (terminal 2) and ignition switch (ACC) 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. 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
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
AC204173
CONNECTOR : D-208
HARNESS SIDE
AC
1
2
3
5
6
4
D-208
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