INSTALLATION PROCEDURE 1. INSTALL TELEPHONE AND GPS ANTENNA ASSEMBLY (a) When reusing the telephone and GPS antenna assembly: (1) Install a new seal. (b) Push the telephone and GPS antenna assembly in the direction indicated by the arrow (1) shown in the illustration to engage the guide. 
(c) Push the telephone and GPS antenna assembly in the direction indicated by the arrow (2) shown in the illustration to engage the 2 guides and 3 claws and install the telephone and GPS antenna assembly. 2. INSTALL TELEPHONE AND GPS ANTENNA ASSEMBLY WITH COVER (a) Temporarily install the telephone and GPS antenna assembly with cover as shown in the illustration. 
(b) Install a new washer and holder as shown in the illustration. 
(c) Install the telephone and GPS antenna assembly with cover with the bolt. Torque: 9.5 N·m {97 kgf·cm, 84 in·lbf} (d) Connect the connector. 3. INSTALL ROOF HEADLINING ASSEMBLY Click here
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Audio And Visual System(for Gasoline Model): Voice Guidance Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION This circuit is used when the voice switch of the steering pad switch assembly is pushed. Using this circuit, the radio and display receiver assembly sends signals to the stereo component amplifier assembly. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEI ...
