Circuit Description

WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.

For circuit diagram, see Fig 1.

DTC Detecting Condition - No communication.
Trouble Area - Key, transponder key coil, transponder key amplifier, wiring harness or ECM.

Fig 1: Identifying No Communication, Communication Malfunction No. 1 & Communication Malfunction No. 2 Circuit (DTC B2796-B2798)