Toyota Sienna Service Manual: No Sound can be Heard from Speakers
INSPECTION PROCEDURE
1 CHECK RADIO RECEIVER
- Check radio receiver setting.
- Check that the volume is not set to "0".
- Check that "MUTE" is off.
OK: The volume is not set to "0" and "MUTE" is off.
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Pressing Power Switch does not Turn on System
INSPECTION PROCEDURE
1 CHECK VEHICLE CONDITION
Check that conditions in the cabin are not likely to cause
condensation.
HINT:
This problem occurs when the cabin is humid and the
temperatur ...
Sound Quality is Bad Only when CD is Played (Volume is Too Low)
INSPECTION PROCEDURE
1 REPLACE CD WITH ANOTHER AND RECHECK
Replace the CD with another one and recheck.
Check if the problem recurs using another CD.
OK:
Malfunction disappears.
END ...
Other materials:
Fuel pump resistor
Components
REMOVAL
1. REMOVE FUEL PUMP RESISTOR
(a) Disconnect the connector.
(b) Remove the nut and fuel pump resistor.
INSPECTION
1. INSPECT FUEL PUMP RESISTOR
(a) Inspect fuel pump resistor.
(1) Using an ohmmeter, measure the resistance
between the terminals.
Standard resi ...
Heated oxygen sensor (for 2wd)
Components
Removal
1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the
cable from the nagative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
2. REMOVE HEATED OXYGEN SENSOR (for Bank ...
ECM Power Source Circuit
DESCRIPTION
When the ignition switch is turned to the ON position, the battery voltage is
applied to terminal IGSW of
the ECM. The ECM MREL output signal causes a current to flow to the coil,
closing the contacts of the EFI
relay and supplying power to terminal +B of the ECM.
If the igniti ...
