DTC C2197/97: Tire Position Non-decision (Test Mode DTC) [08/2013 - ]: Description

Tire position identification operates using the following principles.

For front position identification (rear position identification is performed in the same way):

1. The front tire pressure monitor initiator sends a position identification signal to all of the tire pressure warning valve and transmitters.
2. The tire pressure warning valve and transmitters respond to the received position identification signal by sending a signal to the tire pressure warning ECU and receiver indicating the strength of the received signal.

   HINT: 

   The strength of the signals is different because the distance between the front tire pressure monitor initiator and each tire is different.

3. The tire pressure warning ECU and receiver receives the signal strength information signals from each of the tire pressure warning valve and transmitters and associates them with their correct position based on the received information.