Mitsubishi Outlander GS45X. Manual — part 211
THEFT ALARM
TSB Revision
CHASSIS ELECTRICAL
54A-841
HOW TO DIAGNOSE THE CAN BUS LINES
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: M.U.T.-III USB Cable
• MB991910: M.U.T.-III Main Harness A (Vehicles with
CAN communication system)
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "CAN bus diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it
matches the vehicle being diagnosed.
• If they match, go to step 8.
• If not, go to step 5.
5. Select the "view vehicle information" button.
6. Enter the vehicle information and select the "OK" button.
7. When the vehicle information is displayed, confirm again
that it matches the vehicle being diagnosed.
• If they match, go to step 8.
• If not, go to step 5.
8. Select the "OK" button.
9. When the optional equipment screen is displayed, choose
the one which the vehicle is fitted with, and then select the
"OK" button.
DIAGNOSIS CODE CHART
M1547001400166
DTC No.
Description
Reference page
B120A
Theft alarm siren error
B120B
Theft alarm sensor error
B120C
Theft alarm siren Flat Battery
U1006
Theft alarm siren LIN timeout
Refer to GROUP 54B -
Diagnostic Trouble Code Chart
U1007
Theft alarm sensor LIN timeout
Refer to GROUP 54B -
Diagnostic Trouble Code Chart
U1539
Theft alarm siren LIN checksum
U1540
Theft alarm SNSR. LIN checksum
THEFT ALARM
TSB Revision
CHASSIS ELECTRICAL
54A-842
DIAGNOSTIC TROUBLE CODE PROCEDURES
<VEHICLES WITH THEFT ALARM SENSOR>
DTC B120A Theft alarm siren error
CAUTION
Before replacing the ECU or sensor, ensure that the power supply circuit, the ground circuit and the
communication circuit are normal.
.
DIAGNOSTIC FUNCTION
• The theft alarm siren communicates with the
ETACS-ECU by the LIN via the LIN cutoff control
unit. The diagnostic trouble code No. B120A is
set if the communication data between the
ETACS-ECU and theft alarm siren has an error
when the relay inside the LIN cutoff control unit is
ON (alarm is not activated.)
.
PROBABLE CAUSES
Malfunction of theft alarm siren
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: M.U.T.-III USB Cable
• MB991910: M.U.T.-III Main Harness A (Vehicles with
CAN communication system)
THEFT ALARM
TSB Revision
CHASSIS ELECTRICAL
54A-843
STEP 1. Using scan tool MB991958, read the ETACS-ECU
diagnostic trouble code.
Check if DTC is set to the ETACS-ECU.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
Connect scan tool MB991958. Refer to "How to connect scan
tool (M.U.T.-III)
(1) Turn the ignition switch to the "ON" position.
(2) Check whether the ETACS-ECU DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Diagnose the ETACS-ECU (Refer to
).
NO : Go to Step 2.
STEP 2. Theft alarm siren operation check
(1) Set the theft alarm to the "Ready to be triggered" condition.
(2) Open the driver's door by using the ignition key.
(3) Check that the theft alarm siren sounds.
Q: Is the check result normal?
YES : The trouble can be an intermittent malfunction (Refer
to GROUP 00, How to use
Troubleshooting/inspection Service Points, How to
Cope with Intermittent Malfunction
NO : Go to Step 3.
STEP 3. Replace the theft alarm siren temporarily, and
check whether the diagnostic trouble code is set.
Check again if the diagnostic trouble code is set to the
ETACS-ECU.
(1) Erase the diagnosis trouble code.
(2) Turn the ignition switch from the LOCK (OFF) position to the
ON position.
(3) Check if diagnostic trouble code is set.
Q: Is the DTC set?
YES : Replace the ETACS-ECU.
NO : Replace the theft alarm siren.
ZC501967
AC404789
AC702802
MB991824
MB991827
MB991910
Data link
connector
AB
THEFT ALARM
TSB Revision
CHASSIS ELECTRICAL
54A-844
DTC B120B Theft alarm sensor error
CAUTION
Before replacing the ECU or sensor, ensure that the power supply circuit, the ground circuit and the
communication circuit are normal.
.
DIAGNOSTIC FUNCTION
The theft alarm sensor communicates with the
ETACS-ECU via the LIN bus line. If the diagnostic
trouble code No. B120B is set, the theft alarm sensor
itself may be defective.
NOTE:
.
•
Diagnostic trouble code No.B120B may be set
when the theft alarm sensor cover is improperly
installed or is removed. Check if the theft alarm
sensor cover is properly installed.
•
Diagnostic trouble code No.B120B is set when
the ultrasonic wave transmission/reception part of
the theft alarm sensor is covered. Check if the
ultrasonic wave transmission/reception part of the
theft alarm sensor was covered.
.
PROBABLE CAUSES
Malfunction of the theft alarm sensor
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: M.U.T.-III USB Cable
• MB991910: M.U.T.-III Main Harness A (Vehicles with
CAN communication system)
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