Transponder Key Coil Circuit
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- DTC Detecting Condition - Communication error.
- Trouble Area - Key, transponder key coil, transponder key amplifier, wiring harness or ECM.
For circuit diagram, see Fig 1. For circuit description and inspection procedure, see DTC B2798/99: COMMUNICATION MALFUNCTION NO. 2 under DIAGNOSTIC TESTS.