Mitsubishi Evolution X. Manual — part 913
IGNITION SWITCH
TSB Revision
CHASSIS ELECTRICAL
54A-13
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC TROUBLE SHOOTING
M1543006900937
Refer to Group 00
− Contents of troubleshooting
.
DIAGNOSIS FUNCTION
M1543007001093
HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)
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)
MB991223
a. MB991219
b. MB991220
c. MB991221
d. MB991222
Harness set
a. Test harness
b. LED harness
c. LED harness
adaptor
d. Probe
General service tools Continuity check and voltage
measurement at harness wire or
connector
a. Connector pin contact
pressure inspection
b. Power circuit inspection
c. Power circuit inspection
d. Commercial tester connection
MB992006
Extra fine probe
−
Continuity check and voltage
measurement at harness wire or
connector.
Tool
Tool number and
name
Supersession
Application
MB991223
a
d
c
b
DO NOT USE
BA
MB992006
IGNITION SWITCH
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CHASSIS ELECTRICAL
54A-14
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.
1. Ensure that the ignition switch is at the "LOCK" (OFF)
position.
2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824
and the personal computer.
4. Connect special tool MB991910 to special tool MB991824.
5. Connect special tool MB991910 to the data link connector.
6. Turn the power switch of special tool MB991824 to the "ON"
position.
NOTE: When special tool MB991824 is energized, special
tool MB991824 indicator light will be illuminated in a green
color.
7. Start the M.U.T.-III system on the personal computer.
NOTE: Disconnecting scan tool MB991958 is the reverse of the
connecting sequence, making sure that the ignition switch is at
the "LOCK" (OFF) position.
HOW TO READ AND ERASE DIAGNOSTIC
TROUBLE CODES
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)
NOTE: If the battery voltage is low, diagnostic trouble codes will
not be set. Check the battery if scan tool MB991958 does not
display.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "System select" from the start-up screen.
4. Select "From 2006 MY" of "Model Year." When the "Vehicle
Information" is displayed, check the contents.
5. Select "ETACS" from "System List", and press the "OK"
button.
NOTE: When the "Loading Option Setup" list is displayed,
check the applicable item.
6. Select "Diagnostic Trouble Code."
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
IGNITION SWITCH
TSB Revision
CHASSIS ELECTRICAL
54A-15
TROUBLE SYMPTOM CHART
M1543007202454
SYMPTOM PROCEDURES
Ignition key cylinder illumination light does not illuminate/extinguish normally. <vehicles with WCM>
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
.
Trouble symptom
Reference
page
Ignition key cylinder illumination light does not
illuminate/extinguish normally.
vehicles with WCM
Ignition Key Cylinder Illumination Light Circuit <Vehicles with WCM>
KEY
REMINDER
SWITCH
WHEN
REMOVING
KEY: ON
IGNITION KEY
CYLINDER
ILLUMINATION
LIGHT
ETACS-ECU
AC708953AC
Connector: C-211
AC708972AU
Connector: C-315
ETACS-ECU
IGNITION SWITCH
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CHASSIS ELECTRICAL
54A-16
OPERATION
The ETACS-ECU operates this function in accor-
dance with the input signals below.
• Ignition switch (IG1)
• Key reminder switch
• Driver's door switch
• Driver's door lock actuator
.
TECHNICAL DESCRIPTION (COMMENT)
If this function does not work normally, these input
signal circuit(s), the ignition key cylinder illumination
light or the ETACS-ECU may be defective.
.
TROUBLESHOOTING HINTS
• The key reminder switch may be defective
• The driver's door switch may be defective
• The driver's door lock actuator may be defective
• The ignition key cylinder illumination light bulb
may be defective
• 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:
• MB992006: Extra fine probe
• MB991223: Harness set
• 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)
STEP 1. Using scan tool MB991958, read the diagnostic
trouble code.
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.
(1) Connect scan tool MB991958. Refer to "How to connect
scan tool (M.U.T.-III)
(2) Turn the ignition switch to the "ON" position.
(3) Check whether the ETACS-ECU related DTC is set.
(4) 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.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
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