INSTALLATION PROCEDURE 1. INSTALL VACUUM PUMP ASSEMBLY (a) When using a new vacuum pump assembly: (1) Apply engine oil to the 2 O-rings which are installed to a new vacuum pump assembly. ![]()
(b) When reusing the vacuum pump assembly: (1) Apply engine oil to 2 new O-rings and install them to the vacuum pump assembly. ![]()
(c) Apply engine oil to the inner surface of the installation hole.
2. CONNECT AIR TUBE
3. INSTALL ENGINE WIRE
4. INSTALL NO. 2 SURGE TANK STAY
5. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY Click here
6. INSPECT VACUUM PUMP OPERATION Click here
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Audio And Visual System(for Hv Model): Poor Sound Quality in All Modes (Low Volume)
PROCEDURE 1. CHECK AUDIO SETTINGS (a) Set treble, middle and bass to the initial values and check that the sound is normal. OK: The sound returns to normal. HINT: Sound quality adjustment measures vary according to the type of amplifier. OK END NG 2. COMPARE WITH ANOTHER VEHICLE OF SAME MODEL (a) Co ...