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System Check

  1. Connect the HDS to the data link connector.
  2. Turn the ignition switch to ON (II).
  3. Monitor the System Check in the Immobilizer Info with the HDS.
  4. If the HDS displays Normal N-1, the immobilizer system is OK at this time, refer to STATUS LOG . If the HDS displays any other messages, check as follows:
SYSTEM CHECK REFERENCE TABLE

System Check No. System Check Possible Failures
N-1 Normal -
A-1 The key is not registered
  • This key is not registered in the immobilizer-keyless control unit. Try to register keys by using "KEYS".
  • Poor communication between the antenna and the immobilizer key because of interference caused by items such as key chains.
  • Poor communication between the antenna and the immobilizer key because of low battery voltage.
A-2 Communication error between the key and immobilizer-keyless control unit
  • Intermittent interruption between transponder and immobilizer-keyless control unit.
  • The immobilizer key type is different. It is not for this vehicle but for another one or for other company's one.
  • Key failure (transponder failure)
  • Poor communication between the antenna and the immobilizer key because of interference caused by items such as key chains.
  • Poor communication between the antenna and the immobilizer key because of low battery voltage.
A-3 No communication between the key and immobilizer-keyless control unit
  • The ignition switch was turned to ON (II) with a non-immobilizer key.
  • The immobilizer key type is different. It is not for this vehicle but for another one or for other company's one.
  • Key failure (transponder failure)
  • Poor communication between the antenna and the immobilizer key because of interference caused by items such as key chains.
  • Poor communication between the antenna and the immobilizer key because of low battery voltage.
  • Immobilizer-keyless control unit failure
B-1 The ECM/PCM is not registered
  • The ECM/PCM was not registered. Try to register the ECM/PCM using "REPLACE ECM/PCM".
  • Poor communication between the ECM/PCM and the immobilizer-keyless control unit because of low battery voltage.
  • Poor communication between the immobilizer-keyless control unit and the ECM/PCM because of electrical interference.
B-2 Error of communication format in ECM/PCM
  • The ECM/PCM was not registered. Try to register the ECM/PCM using "REPLACE ECM/PCM".
  • Poor communication between the ECM/PCM and the immobilizer-keyless control unit because of low battery voltage.
  • Poor communication between the immobilizer-keyless control unit and the ECM/PCM because of electrical interference.
C-1 MICU/IMOES unit is not registered The MICU/IMOES unit was not registered correctly. Try to register the MICU/IMOES unit by using "REPLACE MICU/IMOES UNIT".
C-2 Error of communication format between MICU/IMOES unit and immobilizer-keyless control unit.
  • The MICU/IMOES unit was not registered correctly. Try to register the MICU/IMOES unit by using "REPLACE MICU/IMOES UNIT".
  • Poor communication between the ECM/PCM and the immobilizer-keyless control unit because of low battery voltage.
  • Poor communication between the immobilizer-keyless control unit and the ECM/PCM by influence of some noise.
D-1 S-net line short
  • Harness short from the ECM/PCM to the immobilizer-keyless control unit. (IMOCD/S-NET) line short)
  • Poor communication between the ECM/PCM and the immobilizer-keyless control unit because of low battery voltage.
  • Poor communication between the immobilizer-keyless control unit and the ECM/PCM because of electrical interference.
  • Immobilizer-keyless control unit failure
  • ECM/PCM failure
D-2 No communication between MICU/IMOES unit and immobilizer-keyless control unit
  • Blown fuse
  • Harness open from the MICU/IMOES unit to immobilizer-keyless control unit.
  • Poor communication between the MICU/IMOES unit and the immobilizer-keyless control unit because of low battery voltage.
  • Poor communication between the immobilizer-keyless control unit and the MICU/IMOES unit because of electrical interference.
  • Immobilizer-keyless control unit failure
  • MICU/IMOES unit failure
D-3 No communication between ECM/PCM and immobilizer-keyless control unit
  • Blown fuse
  • Harness open from the ECM/PCM to the immobilizer-keyless control unit.
  • Poor communication between the ECM/PCM and the immobilizer-keyless control unit because of low battery voltage.
  • Poor communication between the immobilizer-keyless control unit and the ECM/PCM because of electrical interference.
  • Immobilizer-keyless control unit failure
  • ECM/PCM failure
E-1 Initial registration of immobilizer-keyless control unit is not completed The immobilizer-keyless control unit was not registered. Try to register the immobilizer-keyless control unit by using "REPLACE IMMOBI UNIT".
E-2 The ECM/PCM was not registered. Try to register the ECM/PCM by using "REPLACE ECM/PCM".
E3 The MICU/IMOES unit was not registered. Try to register the immobilizer-keyless control unit by using "REPLACE MICU/IMOES".
E4 The immobilizer-keyless control unit was not registered. Try to register the immobilizer-keyless control unit by using "REPLACE IMMOBILIZER-KEYLESS CONTROL UNIT".
E5
  • The MICU/IMOES unit was not registered. Try to register the MICU/IMOES unit by using "REPLACE MICU/IMOES UNIT".
  • MICU/IMOES unit failure.
F-1 Special Mode Immobilizer system is under registration mode. Turn the ignition switch to LOCK (0) and to ON (II) so as to change normal mode.
F-2
F-3
F-4
F-5
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