Section 6 (Lighting System - Diagnostic Codes & Circuit Tests)
WARNING: This page is about a different car, the 2019 Toyota C-HR and 2018 Toyota C-HR. However, it is still accessible from the selected car via links, so may be relevant.
- Lighting System
- DTC B1244: Light Sensor Circuit Malfunction [02/2017 - 09/2019]
- DTC B242C: Right Headlight ECU Malfunction; DTC B242D: Left Headlight ECU Malfunction [10/2017 - 09/2019]
- DTC B242E: Open in IG Circuit [10/2017 - 09/2019]
- DTC B2439: Headlamp LH Circuit; DTC B243A: Headlamp RH Circuit [10/2017 - 09/2019]
- DTC B243D: Left Low Beam Fan Malfunction; DTC B243E: Right Low Beam Fan Malfunction [10/2017 - 05/2018]
- DTC B2451: Vehicle Specifications have not been Stored [10/2017 - 09/2019]
- DTC B2456: Left Headlight ECU Variation Error [10/2017 - 09/2019]
- DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module [02/2017 - 10/2017]
- DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B" [10/2017 - 09/2019]
- DTC U0242: Lost Communication With Headlamp Control Module "B" [10/2017 - 09/2019]
- DTC U1000: CAN Communication Failure (Message Registry) [10/2017 - 09/2019]
- Turn Signal Switch Circuit [02/2017 - 09/2019]
- Headlight Dimmer Switch Circuit [02/2017 - 10/2017]
- Headlight Dimmer Switch Circuit [10/2017 - 09/2019]
- Daytime Running Light Relay Circuit [02/2017 - 09/2019]
- Clearance Light/Daytime Running Light Circuit [10/2017 - 09/2019]
- Front Fog Light Circuit [10/2017 - 09/2019]
- Hazard Warning Switch Circuit [02/2017 - 09/2019]
- Footwell Light Circuit [02/2017 - 09/2019]
- Taillight Relay Circuit [02/2017 - 10/2017]
- Taillight Relay Circuit [10/2017 - 09/2019]
- Power Source Circuit [02/2017 - 09/2019]
- Low Beam Headlight Circuit [02/2017 - 09/2019]
- High Beam Headlight Circuit [02/2017 - 09/2019]