Toyota RAV4 manuals

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

Rear Air Conditioning Relay Circuit

INSPECTION PROCEDURE

1 INSPECT RELAY (RR A/C)

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)

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:

Basic inspection
When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out in all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location of the problem can be found quickly a ...

Air conditioning controls
Adjusting the temperature setting Press “” on the “TEMP” button to increase the temperature and “” to decrease the temperature. Adjusting the fan speed Press “” on to increase the fan speed and “” to decrease the fan speed. Press the “OFF” button to turn the ...

Removal
1. REMOVE OUTSIDE MOULDING Put protective tape around the outside moulding. Using a heat light, heat the moulding between 40 to 60 C (104 to 140 F). NOTICE: Do not heat the moulding excessively. Tie both piano wire ends to a wooden block or a similar object. Cut off the tape by ...

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