Mitsubishi Montero Sport (2004+). Manual — part 511
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IGNITION SWITCH
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CHASSIS ELECTRICAL
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STEP 5. Check key reminder switch connector D-16 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is key reminder switch connector D-16 in good
condition?
YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
STEP 6. Check the harness wire between key reminder
switch connector D-16 and body ground.
Q: Is the harness wire between key reminder switch D-16
(terminal No.4) and body ground damaged?
YES : There is no action to be taken.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
AC202060
4
5
3
1
6
7
2
AC202060
4
5
3
1
6
7
2
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IGNITION SWITCH
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CHASSIS ELECTRICAL
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STEP 7. Check the harness wire between key reminder
switch connector D-16 (terminal No.2 and 6) and
ETACS-ECU connector D-11 (terminal No.8 and 12).
NOTE: After checking intermediate connector C-72 and D-13,
check the wires. If intermediate connector C-72 and D-13 are
damaged, repair or replace them. Refer to GROUP 00E, Har-
ness Connector Inspection
.
Q: Is the harness wire between key reminder switch D-16
(terminal No.2 and 6) and ETACS-ECU connector D-11
(terminal No.8 and 12) in good condition?
YES : Go to Step 8.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
AC202060
4
5
3
1
6
7
2
1
2
4
5
3
6
8
9
7
10
11
13
14
12
16
17
201918
15
AC201086
8
19
7
6
5
16
15
17 18
4
3
2
10 11 12 13
1
9
14
AC201910
CONNECTOR: C-72
AB
C-72 (B)
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IGNITION SWITCH
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CHASSIS ELECTRICAL
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STEP 8. Check for continuity between terminals (except
No. 4 and No. 6) of key reminder switch connector D-16.
(1) Measure at key reminder switch connector D-16 without
disconnecting the connector.
(2) Check that there is no continuity between key reminder
switch terminal No. 4 and each terminal (except terminal
No. 6), as well as between key reminder switch terminal
No.6 and each terminal (except terminal No. 4).
Q: Does continuity exist between terminals?
YES : Replace the key reminder switch. If the functions,
which are described in "CIRCUIT OPERATION", work
normally, the input signal from the key reminder
switch should be normal.
NO : Go to Step 9.
STEP 9. Recheck for malfunction.
Q: Is a malfunction eliminated?
YES : The procedure is complete. (If no malfunctions are
found in all steps, an intermittent malfunction is
suspected. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Point
− How to
Cope with Intermittent Malfunction
).
NO : Go to Step 1.
INSPECTION PROCEDURE 5: The Ignition Key Reminder Tone Alarm does not Sound when the
Ignition Key is Inserted and the Driver's Door is Opened. (The Ignition Key is Turned to "OFF"
Position.)
.
CIRCUIT OPERATION
Refer to Inspection Procedure 1 for the circuit opera-
tion
.
TECHNICAL DESCRIPTION (COMMENT)
It is possible that there is a malfunction of the input
signal from the door switch or the key reminder
switch if the ignition key hole illumination light does
not illuminate.
.
TROUBLESHOOTING HINTS
• Damaged harness wire or connector
• Malfunction of the ETACS-ECU
• Malfunction of the driver's side door switch
.
AC202060
4
5
3
1
6
7
2
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IGNITION SWITCH
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CHASSIS ELECTRICAL
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DIAGNOSIS
Required Special Tools:
• MB991529: Diagnostic Trouble Code Check Harness
• 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 (Vehicles without
CAN communication system)
STEP 1. Check the input signal (by using pulse check).
Check the ETACS-ECU input signal (driver’s side door switch)
by using scan tool MB991958.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to "LOCK" (OFF) position before connect-
ing or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Check that the tone alarm of scan tool MB991958 sounds
when the driver's side door is opened.
Q: Does the tone alarm of scan tool MB991958 sound when
the input signal enters?
YES : Replace the ETACS-ECU. Check that the malfunction
is eliminated.
NO : Go to Step 3.
STEP 2. Check the input signal from the driver's side door
switch (by using a voltmeter).
Check the input signals from the following switches:
(1) Use special tool MB991529 to connect a voltmeter between
ground terminal 4 or 5 and ETACS-ECU terminal 9 of the
data link connector.
(2) Check that the voltmeter indicator deflects once when the
input signal enters.
Q: Does the voltmeter indicator deflect?
YES : Replace the ETACS-ECU. Check that the malfunction
is eliminated.
NO : Go to Step 3.
AK303629AB
MB991911
MB991827
MB991824
16-PIN
AC003527
GROUNDED TERMINAL
ETACS-ECU
TERMINAL
MB991529
AB
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