DTC B15CB-11: Telephone Main Antenna Circuit Short to Ground; DTC B15CB-13: Telephone Main Antenna Circuit Open [08/2020 - ]: Description

WARNING: This page is about a different car, the 2022 Toyota Avalon and 2021 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is stored when the DCM (telematics transceiver) detects an open or a short in the telephone antenna (main) circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B15CB-11	Telephone Main Antenna Circuit Short to Ground	Telephone antenna (main) impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON (Short circuit)	DCM (telematics transceiver) Telephone and GPS antenna assembly (for Roof Side) Telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) Telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) Telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) Telephone and GPS antenna cord (No. 6 antenna cord sub-assembly)
B15CB-13	Telephone Main Antenna Circuit Open	Telephone antenna (main) impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON (Open circuit)	DCM (telematics transceiver) Telephone and GPS antenna assembly (for Roof Side) Telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) Telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) Telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) Telephone and GPS antenna cord (No. 6 antenna cord sub-assembly)