The ECM/PCM controls the engine, in a normal way for starting and running, and starts communication with the Smart Key ECM/PCM, sending a PIN request to the Smart Key ECM/PCM and waiting for valid release message from it until the release time period has ended.
In case of Smart Key ECM/PCM immobilizer function is locked, the Smart Key ECM/PCM answer is the no release message. ECM/PCM enters in the locked state, which causes theactivation of the imobilization actions of the engine.
In case of Smart Key ECM/PCM immobilizer function state is released, the Smart Key ECM/PCM answer is the release message, including the information Smart Key ECM/PCM inlearnt mode and the PIN code.
This DTC is set, after Engine ECM/PCM sends wake-up signal, if response signal from Smart key ECM/PCM is abnormal structure or is not valid message during engine ECM/PCM communication.
Item | Detecting Condition | Possible Cause |
Enable Conditions |
•
IG ON | 1. Faulty Smart Key ECM/PCM |
Detecting time |
•
1.5 sec. | |
Threshold value |
•
Data error or timing error 1. Data error : Head value error, checksum value error, Smart Key status unknown error 2. Timing Error : Interval time of response from Smart key ECM/PCM after ECM/PCM request signal is longer than 40ms |
