Mitsubishi Montero Sport (2004+). Manual — part 576
THEFT ALARM
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CHASSIS ELECTRICAL
54-291
NOTE: After checking joint connector C-10, check the wires. If
joint connector C-10 is damaged, repair or replace it. Refer to
GROUP 00E, Harness Connector Inspection
Q: Are the harness wires between data link connector C-69
(terminal No.1 and 9) and ETACS-ECU connector D-27
(terminal No.48 and 55) in good condition?
YES : Go to Step 5.
NO : Repair them. Scan tool MB991502 should
communicate with the switch signals.
STEP 5. Measure the resistance at the ETACS-ECU ground
circuit.
(1) Disconnect ETACS-ECU connector D-11 and measure at
the harness side.
(2) Measure the resistance between terminal 10 and ground.
• The measured value should be 2 ohms or less.
Q: Does the measured resistance value correspond with
this range?
YES : Replace the ETACS-ECU. Scan tool MB991502
should communicate with the switch signals.
NO : Go to Step 6.
AC201909
8
19
7
6
5
16
15
17 18
4
3
2
10 11 12 13
1
9
14
CONNECTOR: C-10
AB
C-10
AC201084
JUNCTION
BLOCK (REAR)
D-11
COMPONENT SIDE
AB
CONNECTOR: D-11
1
2
3
4
5
7
9
10
6
8
11
12
AC004007AC
D-11
HARNESS CONNECTOR:
COMPONENT SIDE
THEFT ALARM
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CHASSIS ELECTRICAL
54-292
STEP 6. Check ETACS-ECU connector D-11 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector D-11 in good condition?
YES : Go to Step 7.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Scan tool MB991502
should communicate with the switch signals.
STEP 7. Check the harness wires between ETACS-ECU
connector D-11 and ground.
NOTE: After checking junction block connector D-13, check the
wires. If junction block connector D-13 is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion
.
Q: Are the harness wires between ETACS-ECU connector
D-11 and ground in good condition?
YES : Go to Step 8.
NO : Repair them. Scan tool MB991502 should
communicate with the switch signals.
AC201084
JUNCTION
BLOCK (REAR)
D-11
COMPONENT SIDE
AB
CONNECTOR: D-11
1
2
4
5
3
6
8
9
7
10
11
13
14
12
16
17
201918
15
AC201086
THEFT ALARM
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CHASSIS ELECTRICAL
54-293
STEP 8. Recheck for malfunction.
Q: Is a malfunction eliminated?
YES : This procedures 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 6: The Key Reminder Switch Signal is not Sent to the ETACS-ECU.
AC004252 AB
Key Reminder Switch Input Signal Circuit
THEFT ALARM
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CHASSIS ELECTRICAL
54-294
.
CIRCUIT OPERATION
The ETACS-ECU receives the input signal from the
key reminder switch, and then judges the operation
of each function.
.
TECHNICAL DESCRIPTION (COMMENT)
The key reminder switch input signal is used for judg-
ing the operation of the following functions. Thus, if
there is a malfunction, these functions may not oper-
ate correctly.
• Ignition key tone alarm function
• Forgotten key prevention function
• Dome light dimming function
• Keyless entry system
• Theft-alarm function
.
TROUBLESHOOTING HINTS
• Malfunction of the key reminder switch
• Malfunction of the ETACS-ECU
• Damaged harness wires or connectors
.
AC003622
CONNECTOR: C-72
AD
C-72 (B)
AC003444 AB
CONNECTOR: D-11, D-13
D-11
D-13
JUNCTION BLOCK (REAR)
AC003433
CONNECTOR: D-16
AC
D-16
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