Toyota Venza: Radio Receiver Power Source Circuit

Toyota Venza Service Manual / Audio / Video / Audio And Visual System / Radio Receiver Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the radio and display receiver assembly.

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 (RADIO AND DISPLAY RECEIVER ASSEMBLY POWER SOURCE)

(a) Disconnect the E4 and E42 radio and display receiver assembly connectors.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
E4-7 (GND1) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
E4-4 (+B1) - E4-7 (GND1)	Always	11 to 14 V
E4-3 (ACC1) - E4-7 (GND1)	Ignition switch ACC	11 to 14 V
E42-1 (IG) - E4-7 (GND1)	Ignition switch ON	11 to 14 V

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

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