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
HINT:
Use the same procedures for the RH side and LH side.
The procedures listed below are for the LH side.
1. INSTALL FRONT AIRBAG SENSOR LH
Check that the ignition switch is off.
Check that the battery negative (-) terminal is
disconnected.
CAUTION: ...
Reassembly
1. INSTALL HEATER RADIATOR UNIT SUB-ASSEMBLY
(a) Install the heater radiator unit sub-assembly to the
air conditioning blower assembly.
(b) Install the 2 O-rings to the heater water valve
assembly.
(c) Install the 3 screws and the heater water valve
assembly.
(d) Install the 2 s ...
Light Control Switch Circuit
DESCRIPTION
This circuit detects the state of the headlight dimmer switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
Connect the intelligent tester to DLC3.
Turn the ignition switch ON and push the intelligent
tester main switch ON.
Select t ...
