Ignition Key - Mitsubishi Lancer Evolution-VII Workshop Manual

CHASSIS ELECTRICAL -
INSPECTION PROCEDURES FOR EACH DIAGNOSIS CODE
Code No. 11 Problem related to communication with the

ignition key

When the ignition switch is at the ON position, the encrypted codes are not
transmitted from the ignition key to the immobilizer-ECU.
Can other keys which have been registered be used to start
the engine?
Check the diagnosis codes.
Replace the immobilizer-ECU.
Code No. 12 Ignition key is not registered, or encrypted
code from ignition key does not match.
The ignition key has not been registered with the immobilizer-ECU.
Register the encrypted code.
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptom
Communication with MUT-II is not possible.
Diagnosis code No. P1610 is generated by the engine-ECU.
The ignition keys cannot be registered using the MUT-II.
The engine does not start.(The engine cranks but does not fire.)
Immobilizer-ECU power supply and earth circuit system check
Ignition Switch and Immobilizer System
NO
If code No. 11 is
output
Probable cause
D Malfunction of ignition key
D Malfunction of immobilizer-ECU
YES
Replace the ignition key which cannot start the engine.
Register the ignition key.
If code No. 12 is
output
To inspection procedure 12 classified by diagnosis code (Refer
to P.54A-7.)
Probable cause
D The ignition key has not been registered with the
immobilizer-ECU.
D Malfunction of immobilizer-ECU
OK
Check the trouble symptoms.
Replace the immobilizer-ECU.
54A-7
NG
Inspection Reference page
procedure
No.
– GROUP 13A -
Troubleshooting
1 54A-8
2 54A-9
3 54A-9
4 54A-10