Toyota Sienna Service Manual: Adjustment
1. ADJUST BUZZER VOLUME
- Turn the knob on the clearance warning ECU to adjust the volume.
- Park / Neutral Position Switch Circuit
- Speed Signal Circuit
- Back Sonar Sensor LH Circuit
- Back Sonar Sensor RH Circuit
- Front Clearance Sonar Sensor LH Circuit
- Front Clearance Sonar Sensor RH Circuit
- Rear Clearance Sonar Sensor LH Circuit
- Rear Clearance Sonar Sensor RH Circuit
- No. 1 Clearance Warning Buzzer Circuit
- Clearance Warning ECU Power Source Circuit
- No. 2 Clearance Warning Buzzer Circuit
- Indicator Circuit
Terminals of ECU
1. CLEARANCE WARNING ECU
*1: with Front Clearance Sonar
2. AIR CONDITIONER AMPLIFIER ASSEMBLY
*1: with Front Clearance Sonar
*2: Manual A/C
*3: Auto A/C
Reference: ...
Park / Neutral Position Switch Circuit
DESCRIPTION
The clearance warning ECU receives the reverse or park position signal from
the park / neutral position
switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT CLEARANCE WARNING E ...
Other materials:
Installation
1. INSTALL REAR COIL SPRING INSULATOR UPPER LH
(a) Install the insulator upper LH to the coil spring rear
LH.
2. INSTALL COIL SPRING REAR LH
(a) Apply a shop rug to the rear axle beam assembly.
(b) Install the coil spring rear LH to the rear axle beam
assembly.
HINT:
Fit the lowe ...
Precaution for cooling fan system
NOTICE: • When the ignition switch is turned off and the
engine temperature is high, the cooling fans may
operate for approximately 3 minutes. • After turning the ignition switch
off, keep hands
and objects away from the fans when they are operating.
HINT:
If all of the following a ...
Transmitter ID not Registered
DTC C2171/71 Transmitter ID not Registered
DESCRIPTION
The IDs of each tire pressure warning valve and transmitters are registered
to the tire pressure warning
ECU.
When the IDs have never been registered, a DTC is output.
INSPECTION PROCEDURE
NOTICE:
When replacing the tire pressu ...
