Toyota Sienna Service Manual: Parking Brake Switch Circuit
DESCRIPTION
This circuit is from the parking brake switch to the radio and navigation assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK BRAKE WARNING LIGHT
- Check that the brake warning light comes on when the parking brake is applied and goes off when it is released.
OK: The brake warning light operates as specified above.
2 INSPECT PARKING BRAKE SWITCH
- Disconnect the parking brake switch.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
3 CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH - RADIO AND NAVIGATION ASSEMBLY)
- Disconnect the radio and navigation assembly connector R12 and parking brake switch connector P6.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Illumination Circuit
DESCRIPTION
Power is supplied to the radio and navigation assembly and steering pad
switch illumination when the
light control switch is in the TAIL or HEAD position.
WIRING DIAGRAM
INSPECTI ...
Speaker Circuit
DESCRIPTION
The sound signal that has been amplified by the stereo component amplifier is
sent to the speakers from
the stereo component amplifier through this circuit.
If there is a short in t ...
Other materials:
No. 1 Speaker with box
COMPONENTS
ON-VEHICLE INSPECTION
1. INSPECT NO.1 SPEAKER WITH BOX
HINT:
Remove interior parts so that the No.1 speaker with box
can be seen.
Check the speaker installation.
OK:
The speaker is securely installed.
If the result is not as specified, reinstall the No.1
s ...
Disassembly
1. REMOVE AIR REFINER ELEMENT
(a) Release the 2 claw fittings and remove the air filter
sub-assembly.
(b) Remove the air refiner element from the air filter
cover plate.
2. REMOVE COOLING UNIT DAMPER SERVO SUBASSEMBLY
(a) Remove the 3 screws and the cooling unit damper
servo sub-a ...
Audio system types
Entune Audio
Entune Audio Plus/Entune Premium Audio with Navigation
Owners of models equipped with a navigation system should refer to
the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S
MANUAL”.
Using cellular phones
Interference may be heard through the audio system’s speakers if a c ...
