Mitsubishi Lancer Evolution VI. Manual — part 102
CHASSIS ELECTRICAL –
Ignition Switch
54-12
REMOVAL SERVICE POINT
A
A
"
STEERING LOCK CYLINDER REMOVAL
1.
Insert the key in the steering lock cylinder and turn it
to the “ACC” position.
2.
Using a cross-tip (+) screwdriver (small) or a similar tool,
push the lock pin of the steering lock cylinder inward
and then remove the steering lock cylinder.
INSPECTION
IGNITION SWITCH CONTINUITY CHECK
Disconncect the ignition switch connector without removing
the ignition switch from the vehicle. Then, check the continuity
between the following terminals.
Ignition key
Terminal No.
Ignition key
position
1
2
3
4
5
6
LOCK
ACC
ON
START
KEY REMINDER SWITCH CONTINUITY CHECK
Disconnect the key reminder switch connector with the switch
installed on the vehicle, and then check continuity.
Ignition key
Terminal No.
1
2
Removed
Inserted
Cross-tip (+)
screwdriver
Lock pin
CHASSIS ELECTRICAL –
Ignition Switch and Immobilizer System
54-13
IGNITION SWITCH AND IMMOBILIZER SYSTEM
<EVOLUTION-VI WITH IMMOBILIZER SYSTEM>
SPECIAL TOOL
Tool
Number
Name
Use
MB991502
MUT-
II
sub
assembly
D
Immobilizer system check
(Diagnosis display using the MUT-
II
)
D
Registration of the ID code
TROUBLESHOOTING
Caution
The ID code should always be re-registered when replacing the immobilizer-ECU.
STANDARD FLOW OF DIAGNOSIS TROUBLESHOOTING
Refer to GROUP 00 – How To Use Troubleshooting/Inspection Service Points.
DIAGNOSIS FUNCTION
DIAGNOSIS CODES CHECK
Refer to GROUP 00 – How To Use Troubleshooting/Inspection Service Points.
ERASING DIAGNOSIS CODES
Refer to GROUP 00 – How To Use Troubleshooting/Inspection Service Points.
Caution
The diagnosis codes which result from disconnecting the battery cables cannot be erased.
INSPECTION CHART FOR DIAGNOSIS CODES
Diagnosis code No.
Inspection items
Reference
page
11
Transponder communication system
54-14
12*
ID code are not the same or are not registered
54-14
21
Communication system between MUT-
II
and engine-ECU
54-15
31
EEPROM abnormality inside immobilizer-ECU
54-15
NOTE
*: Diagnosis code No. 12 is not recorded.
CHASSIS ELECTRICAL –
Ignition Switch and Immobilizer System
54-14
INSPECTION PROCEDURE FOR DIAGNOSIS CODES
Code No. 11 Transponder communication system
Probable cause
D
The ID code of the transponder is not sent to the immobilizer-ECU immediately
after the ignition switch is turned to the ON position.
D
When starting the engine, one ignition key’s ID code interferes with another ignition
key’s code.
D
Radio interference of ID codes
D
Malfunction of the transponder
D
Malfunction of the ignition key ring antenna
D
Malfunction of harness or connector
D
Malfunction of the immobilizer-ECU
No
OK
Check the following connectors.
B-100, B-101
NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between immo-
bilizer-ECU and key ring antenna.
NG
Repair
OK
Replace the immobilizer-ECU.
NG
Diagnosis codes check
Code No. 12 occurs
To INSPECTION PROCEDURE FOR
DIAGNOSIS CODE No. 12
(Refer to P.54-14.)
Code No. 11 occurs
Check the continuity of the ignition key
ring antenna. (Refer to P.54-20.)
NG
Replace
Is there another ignition key near the
ignition key that is inserted in the ignition
switch?
Yes
Remove the extra ignition key.
Check trouble symptoms.
Does the engine start using the spare
ignition key which has had the ID code
registered?
OK
Replace the ignition key that does not
work.
Re-register the ID code.
(Refer to P.54-21.)
NG
Code No. 12 ID code are not the same or are not registered
Probable cause
The ID code which is sent from the transponder is not the same as the ID code
which is registered in the immobilizer-ECU.
D
The ID code in the ignition key being used has not
been properly registered.
D
Malfunction of the immobilizer-ECU
Re-register the ID code.
(Refer to P.54-21.)
Check trouble symptoms.
NG
Replace the immobilizer-ECU.
CHASSIS ELECTRICAL –
Ignition Switch and Immobilizer System
54-15
Code No. 21 Communication system between MUT-
II
and
engine-ECU
Probable cause
After the ignition switch is turned to the ON position, the confirmation code is not
received from the engine-ECU within the allowable time, or an abnormal code is received.
D
Malfunction of harness or connector
D
Malfunction of the engine-ECU
D
Malfunction of the immobilizer-ECU
Is diagnosis code No. 54 being gener-
ated by the engine-ECU?
NO
Check the engine-ECU power source
and the earth circuit.
(Refer to GROUP 13A – Troubleshoot-
ing.)
YES
Check the following connectors.
B-100, B-65, B-61
NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between
engine-ECU and immobilizer-ECU.
NG
Repair
OK
Check trouble symptoms.
NG
Replace the immobilizer-ECU.
Check trouble symptoms.
NG
Replace the engine-ECU.
Code No. 31 EEPROM abnormality inside immobilizer-
ECU
Probable cause
No data has been written to the EEPROM inside the immobilizer-ECU.
D
Malfunction of the immobilizer-ECU
Check trouble symptoms.
NG
Replace the immobilizer-ECU.
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