Toyota Sienna Service Manual: The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted
INSPECTION PROCEDURE
1 CHECK CELLULAR PHONE
- Check if the other side can hear your voice properly.
OK: Your voice can be heard correctly.
2 CHECK SETTINGS
- Check if the mute switch is set to ON.
OK: Mute switch is not set to ON.
3 CHECK SETTINGS
- Enter the "Handsfree Voice Quality Set" mode.
- Check if the Send Voice Level is set to "0".
HINT: The Send Voice Level can be set to 11 different levels, -5 to +5, with a 3 dB difference.
- Check if the Send Voice Level minimum or maximum level.
HINT: When the Send Voice Level is set to the minimum or maximum level, the sound may be distorted.
OK: The Send Voice Level is set to "0".
4 CHECK MICROPHONE (NAVIGATION CHECK MODE)
- Enter the "MICROPHONE & VOICE RECOGNITION CHECK" mode.
- When voice is input into the microphone, check that the microphone input level meter changes according to the input voice.
- Push the recording switch and perform voice recording.
HINT: Voice can be recorded up to 5 seconds.
- Check that the recording indicator remains on while recording and that the recorded voice is played normally without noise or distortion.
OK: All check results are normal.
REPLACE RADIO AND NAVIGATION ASSEMBLY
The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted
INSPECTION PROCEDURE
1 CHECK CELLULAR PHONE
Check if the voice on the other side can be heard using a
cellular phone.
OK:
Voice can be heard
2 CHECK NAVIGATION SYSTEM
Check that naviga ...
Black Screen
INSPECTION PROCEDURE
1 CHECK DISPLAY SETTING
Check that the display is not in "Screen OFF" mode.
OK:
The display setting is not in "Screen OFF" mode.
2 CHECK IMAGE QUALIT ...
Other materials:
Yaw rate sensor check (when using sst check wire)
(a) Check the zero point voltage of the yaw rate sensor.
(1) Keep the vehicle in a stationary condition on a
level surface for 1 second or more.
(b) Check the output of the yaw rate sensor.
(1) Move the shift lever to the D position, drive the
vehicle at a speed of approximately 3 mph (5
...
Speed Signal Circuit
DESCRIPTION
The clearance warning ECU receives the vehicle speed signal from the
combination meter.
HINT:
A voltage of 12 V or 5 V is output from each ECU and then input to
the combination meter. The signal
is changed to a pulse signal at the transistor in the combination meter.
...
Sound Signal Circuit between Radio Receiver and Television Display
Assembly
DESCRIPTION
The television display assembly sends a sound signal to the radio receiver
through this circuit.
The sound signal that has been sent is amplified by the stereo component
amplifier or radio receiver
(built-in amplifier), and then is sent to the speakers.
If there is an open or ...
