Toyota Sienna Service Manual: Rear Air Conditioning Relay Circuit
DESCRIPTION
The RR A/C relay is switched on by signals from the A/C amplifier. It supplies power to the rear blower motor.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT RELAY (RR A/C)
(a) Remove the RR A/C relay from the No. 3 relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance 
2 CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)
(a) Disconnect the connector from the A/C amplifier.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Rear Air Conditioning Control Panel Circuit
DESCRIPTION
This is the rear A/C system control signal circuit as well as the power
supply circuit of the rear A/C control
assembly.
Pulse signals regarding rear A/C control panel switch operat ...
Rear Blower Motor Circuit
DESCRIPTION
Power to the rear blower motor is supplied from the battery via the RR A/C
relay.
The rear blower motor speed level varies between 0 and 31 based on the voltage
difference measured ...
Other materials:
Sliding doors
Vehicles without power sliding doors
The sliding doors can be opened and closed using the sliding
door handle. The sliding door can be locked and unlocked using
the wireless remote control, door lock switch or inside lock
knob.
Vehicles with power sliding doors
...
Installation
1. INSTALL AMPLIFIER ANTENNA ASSEMBLY
Engage the 16 clamps to install the amplifier
antenna assembly.
Install the 3 bolts.
Connect the connectors.
2. INSTALL ROOF HEADLINING ASSEMBLY
3. INSTALL ANTENNA ASSEMBLY WITH HOLDER
Install the antenna assembly ...
DRL Relay Circuit
DESCRIPTION
The Multiplex network body ECU controls the DRL No.2 relay
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
Connect the intelligent tester to DLC3.
Turn the ignition switch ON and push the intelligent
tester main switch ON.
Sel ...
