Phone screen To display the screen shown below, press the Several functions are available to operate on each screen that is displayed by selecting the 4 tabs.
■ Microphone The vehicle's built in microphone is used when talking on the phone. The person you are speaking to can be heard from the front speakers.
To use the hands-free system, you must register your Bluetooth phone in the system. Status display You can check indicators such as signal strength and battery charge on any screen.
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Toyota Tundra Service Manual > Can Communication System: Open in Bus 4 Main Bus Line
DESCRIPTION There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 22 (CA2H) and 7 (CA2L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher. Symptom Trouble Area Resistance between terminals 22 (CA2H) and 7 (CA2L) of the central gateway ...