Immobilizer System Check

1.Connect the HDS to the data link connector.

2.Turn the ignition switch ON (II).

3.Monitor the System Check in the Immobilizer Info with the HDS.

4.If the HDS displays the ‘‘Normal'', the Immobilizer system is OK. If the HDS displays any other messages, check as follows:

System
Check No. 		System Check Possible Cause Status Log.
Indication 
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 using the HDS.
  • The communication was not good between the antenna and the immobilizer key by influence of metal such as key chains.
  • The communication was not good between the antenna and the immobilizer key by battery voltage low.
 		Possible 
A-2 Communication error between 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)
  • The communication was not good between the antenna and the immobilizer key by influence of metal such as key chains.
  • The communication was not good between the antenna and the immobilizer key by battery voltage low.
 		Possible 
A-3 No communication between key and Immobilizer-keyless control unit 
  • The ignition switch was turned on 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)
  • The communication was not good between the antenna and the immobilizer key by influence of metal such as key chains.
  • The communication was not good between the antenna and the immobilizer key by battery voltage low.
  • Immobilizer-keyless control unit failure
 		Possible 
B-1 The ECM is not registered 
  • The ECM was not registered. Try to register the ECM using the HDS.
  • The communication was not good between the ECM and the immobilizer-keyless control unit by battery voltage low.
  • The communication was not good between the immobilizer-keyless control unit and the ECM by influence of some noise.
 		Possible 

System
Check No. 		System Check Possible Cause Status Log.
Indication 
B-2 Error of communication format in ECM 
  • The ECM was not registered. Try to register the ECM using the HDS.
  • The communication was not good between the ECM and the immobilizer-keyless control unit by battery voltage low.
  • The communication was not good between the immobilizer-keyless control unit and the ECM by influence of some noise.
 		Possible 
D-1 S-net line short 
  • Harness short from the ECM to the immobilizer-keyless control unit. (S-net line short)
  • The communication was not good between the ECM and the immobilizer-keyless control unit by battery voltage low.
  • The communication was not good between the immobilizer-keyless control unit and the ECM by influence of some noise.
  • Immobilizer-keyless control unit failure
  • ECM failure
 		Possible 
D-3 No communication between ECM and the Immobilizer-keyless control unit 
  • Blown fuse
  • Harness open from the ECM to the immobilizer-keyless control unit.
  • The communication was not good between the ECM and the immobilizer-keyless control unit by battery voltage low.
  • The communication was not good between the immobilizer-keyless control unit and the ECM by influence of some noise.
  • Immobilizer-keyless control unit failure
  • ECM failure
 		Possible 
E-1 Initial registration of Immobilizer-keyless control unit is not completed The immobilizer-keyless control unit is not registered. Try to register the immobilizer-keyless control unit using the HDS. ——— 
E-2 
E-3 
E-4 
E-5 
F-1 Special Mode Turn the ignition switch ON (II) and OFF with the registered key. ——— 
F-2 
F-3 
F-4 
F-5