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 > Audio And Visual System: Speaker Circuit
DESCRIPTION The radio and display receiver assembly sends sound signals to the speakers. WIRING DIAGRAM PROCEDURE 1. CHECK VEHICLE CONDITION (a) Check the vehicle condition. Result Result Proceed to for 6 speakers A for 7 or 9 Speakers B B GO TO STEP 6 A 2. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCU ...