Stereo Component Amplifier Power Source Circuit (TO 12/2010): Procedure

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY

Disconnect the stereo component amplifier assembly connectors.

Fig 1: Identifying Stereo Component Amplifier Assembly Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

Tester Connection	Condition	Specified Condition
E38-2 (GND) - Body ground	Always	Below 1 Ω
E38-6 (GND2) - Body ground	Always	Below 1 Ω

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

Standard Voltage

Tester Connection	Condition	Specified Condition
E38-1 (+B) - E38-2 (GND)	Always	11 to 14 V
E38-3 (+B2) - E38-2 (GND)	Always	11 to 14 V
E20-12 (ACC) - E38-2 (GND)	Ignition switch ACC	11 to 14 V

TEXT IN ILLUSTRATION

*a	Front view of wire harness connector (to Stereo Component Amplifier Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 2

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE