System Description

The vehicle is equipped with an immobilizer system that will disable the vehicle unless the proper ignition key is used. This system consists of a transponder located in the ignition key, an immobilizer control unit-receiver, an indicator light, and the ECM/PCM.

When the key is inserted in the ignition switch and turned to the on (II) position, the immobilizer control unit-receiver sends power to the transponder in the ignition key. The transponder then sends a coded signal back through the immobilizer control unit-receiver to the ECM/PCM.

Fig 1: Immobilizer System Description

• If the proper key has been used, the immobilizer indicator light will come on for about 2 seconds, then go off.
• If the wrong key has been used whose code was not received or recognized by the unit, the indicator light will come on for about 2 seconds, then it will blink until the ignition switch is turned OFF.
• If the ignition switch is turned OFF, the indicator will blink for about 5 seconds to signal that the unit has been set correctly, then the indicator will go off.
• If the customer has lost his key, and cannot start the engine, contact Acura Customer Relations.

  IMMOBILIZER INDICATOR LIGHT BLINKING PATTERN: 

  Fig 2: Immobilizer Indicator Light Blinking Pattern