Toyota Venza: Back-up Power Source Circuit

Toyota Venza Service Manual / Heating / Air Conditioning / Air Conditioning System / Back-up Power Source Circuit

DESCRIPTION

The back-up power source circuit for the A/C amplifier is shown below. Power is supplied even when the ignition switch is turned off. The power is used for diagnostic trouble code memory, etc.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)

(a) Disconnect the A/C amplifier connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
D47-21 (B) - Body ground	Always	11 to 14 V

Text in Illustration

*1	Front view of wire harness connector (to A/C Amplifier)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

IG Power Source Circuit

DESCRIPTION The main power source is supplied to the A/C amplifier when the ignition switch is ON. The power source is used for operating the A/C amplifier and servo motor, etc. WIRING DIAGRAM ...

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