Toyota RAV4 manuals

Toyota Sienna Service Manual: Poor Sound Quality in All Modes (Low Volume)

INSPECTION PROCEDURE

1 CHECK AUDIO SETTINGS

  1. Set "BASS", "MID", and "TREB" to the initial values and check that sound is normal.

OK: Malfunction disappears.

2 COMPARE WITH ANOTHER VEHICLE OF SAME MODEL

  1. Compare with another vehicle of the same model.
  1.  Compare with another vehicle of the same model which does not have trouble to see if there is any difference in the sound quality.

OK: No difference is found.

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Radio Broadcast cannot be Received or Poor Reception
INSPECTION PROCEDURE 1 CHECK RADIO RECEIVER Check the radio's automatic station search function.  Check the radio's automatic station search function by activating it. OK: The ra ...

Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter
DESCRIPTION This circuit is necessary for the ASL (Auto Sound Leveliser) built into the radio receiver. Speed signals are received from the combination meter and used for the ASL. The ASL fun ...

Other materials:

Removal
1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM (See page AC-172) 2. REMOVE NO. 2 AIR CLEANER INLET (See page EM- 28) 3. REMOVE FRONT BUMPER ASSEMBLY (See page ET-3) 4. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY (a) Remove the bolt and disconnect the discharge hose sub-assembly from the coo ...

Initialization
1. RESET  Reset the power slide door system: The power slide door ECU records the fully open position of the power slide door in its memory and the power slide door fully opens and closes based on this memory. The power slide door cannot operate without this memory. In the case wh ...

Differential system
PRECAUTION NOTICE: When disconnecting the negative (-) battery terminal, initialize the following systems after the terminal is reconnected. 1. Before disassembly, clean the outside of the rear differential assembly and remove any sand or mud to prevent it from entering the inside of the as ...

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