Toyota 4Runner: Stereo Component Amplifier Power Source Circuit

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Navigation / Multi Info Display / Navigation System / Stereo Component Amplifier Power Source Circuit

DESCRIPTION

This circuit provides power to the stereo component amplifier 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 (STEREO COMPONENT AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND)

(a) Disconnect the N11 and N14 stereo component amplifier assembly connectors.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
N14-2 (GND) - Body ground	Always	Below 1 Ω
N14-6 (GND2) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
N14-1 (+B) - N14-2 (GND)	Always	11 to 14 V
N14-3 (+B2) - N14-2 (GND)	Always	11 to 14 V
N11-12 (ACC) - N14-2 (GND)	Ignition switch ACC	11 to 14 V

Text in Illustration

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

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS AND CONNECTOR

Microphone Circuit between Microphone and Navigation Receiver Assembly

DESCRIPTION The navigation receiver assembly and map light assembly (telephone microphone assembly) are connected to each other using the microphone connection detection signal lines. ...

Navigation Receiver Assembly Power Source Circuit

DESCRIPTION This is the power source circuit to operate the navigation receiver assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system be ...

Other materials about Toyota 4Runner:

Precaution
PRECAUTION 1. IGNITION SWITCH EXPRESSION HINT: The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section. Expression Ign ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION (a) Smart key system (for start function) data and the Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the function seems to be malfunctioning, use the Techstream t ...