PCM (Power Train Control Module)
1. | The PCM(ECM) (A) carries out
a check of the ignition key using a special encryption algorithm, which
is programmed into the transponder as well as the PCM(ECM) simultaneously.
Only if the results are equal, the engine can be started. The data of all
transponders, which are valid for the vehicle, are stored in the PCM(ECM). ERN (Encrypted Randorn Number) value between EMS and encrypted smartra unit is checked and the validity of coded key is decided by EMS.
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The SMARTRA carries out communication with the built-in transponder in the ignition key. This wireless communication runs on RF (Radio frequency of 125 kHz). The SMARTRA is mounted behind of the crash pad close to center cross bar.
The RF signal from the transponder, received by the antenna coil, is converted into messages for serial communication by the SMARTRA device. And, the received messages from the PCM(ECM) are converted into an RF signal, which is transmitted to the transponder by the antenna.The SMARTRA does not carry out the validity check of the transponder or the calculation of encryption algorithm. This device is only an advanced interface, which converts the RF data flow of the transponder into serial communication to the PCM(ECM) and vice versa.
[USA]
The transponder (A) has an advanced encryption algorithm. During the key teaching procedure, the transponder will be programmed with vehicle specific data. The vehicle specific data are written into the transponder memory. The write procedure is once only; therefore, the contents of the transponder can never be modified or changed.
The antenna coil (A) has the following functions.
- | The antenna coil supplies energy to the transponder. |
- | The antenna coil receives signal from the transponder. |
- | The antenna coil sends transponder
signal to the SMARTRA. It is located directly in front of the steering handle lock. |
Speedometer
Type A
Type B
The speedometer indicates the forward speed of the vehicle.
The speedometer is calibrated in kilometers per hour and/or miles per hour. ...
Installation
1.
Remove the ignition key from
the vehicle.
2.
Disconnect the battery negative
cable and wait for at least three minutes.
3.
Tighten the curtain airb ...
Replacement
1.
Disconnect the negative (-) battery
terminal.
2.
Remove the crash pad.(Refer
to BD group - "Crash Pad")
3.
Disconnect the Intake actu ...