Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STEREO COMPONENT CONTROLLER ASSY (+B, ACC, GND)

Disconnect the stereo component controller assy R18.

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

Standard:

STEREO COMPONENT CONTROLLER ASSY (+B, ACC, GND) RESISTANCE

Tester connection	Condition	Specified condition
GND - Body ground	Always	Below 1 Ω

Fig 1: Disconnecting Stereo Component Controller Assy R18

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard:

STEREO COMPONENT CONTROLLER ASSY (+B, ACC, GND) VOLTAGE

Tester connection	Condition	Specified condition
+B - GND	Always	10 to 14 V
ACC - GND	Ignition SW ACC	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE OR DIAGNOSTIC TROUBLE CODE CHART