[54A] CHASSIS ELECTRICAL - - IGNITION SWITCH - DIAGNOSTIC TROUBLE CODE PROCEDURES - Diagnosis code 11: Transponder Communication System or Radio Interference of Encrypted CodePRINT PAGE / INDEX / PRIOR / NEXT
DIAGNOSTIC TROUBLE CODE PROCEDURES
Diagnosis code 11: Transponder Communication System or Radio Interference of Encrypted Code
DIAGNOSIS CODE SET CONDITION
  • Diagnosis code 11 may be output if other ignition keys are in the vicinity of the vehicle as it is being started.
  • The transponder’s encrypted code is not sent to the immobilizer-ECU immediately after the ignition switch is turned to "ON" position.
NOTE: Diagnosis code 11 is always output together with MPI system diagnosis code 54.
TROUBLESHOOTING HINTS
  • Radio interference of the encrypted code
  • Malfunction of the transponder
  • Malfunction of the immobilizer-ECU.
DIAGNOSIS PROCEDURE
STEP 1. Check for presence of other key near the key in the ignition.
Q: Is there any other key near the key in the ignition?
YES:  Move the other key well away from key being used. Retest the system.
NO:  Go to Step 2.
STEP 2. Check that the engine start using the spare ignition key which encrypted code has been registered.
Q: Does the engine start using the spare ignition key for which the encrypted code has been registered?
YES:  Replace the ignition key that does not work. Then register the password (secret code) and encrypted code . Retest the system.
NO:  Go to Step 3.
STEP 3. MUT-II/III diagnosis code
Q: Which diagnosis code is set, diagnosis code 11 or 12 the encrypted code has been registered?
Diagnosis code 12 is set:  Refer to .
Diagnosis code 11 is set:  Go to Step 4.
STEP 4. Connector check: Immobilizer-ECU connector C-304-1.
Q: Are immobilizer-ECU connector C-304-1 in good condition?
YES:  Replace immobilizer-ECU and Then register the password (secret cod) and encrypted code. Retest the system.
NO:  Repair or replace the damage component(s).
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