Toyota 4Runner: Sound Signal Circuit between Navigation Receiver Assembly and Stereo Component Amplifier

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Navigation / Multi Info Display / Navigation System / Sound Signal Circuit between Navigation Receiver Assembly and Stereo Component Amplifier

DESCRIPTION

The navigation receiver assembly sends a sound signal to the stereo component amplifier assembly via the sound signal circuit.

The sound signal that has been sent is amplified by the stereo component amplifier assembly, and then is sent to the speakers.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, DCM (telematics transceiver)*1 or speakers.

*1: w/ Manual (SOS) Switch

WIRING DIAGRAM

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)

(a) Disconnect the G6 navigation receiver assembly connector.

(b) Disconnect the N11 stereo component amplifier assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
N11-5 (R+) - G6-1 (FR+)	Always	Below 1 Ω
N11-4 (R-) - G6-5 (FR-)	Always	Below 1 Ω
N11-3 (L+) - G6-2 (FL+)	Always	Below 1 Ω
N11-2 (L-) - G6-6 (FL-)	Always	Below 1 Ω
N11-6 (SLD) - Body ground	Always	10 kΩ or higher
N11-5 (R+) - Body ground	Always	10 kΩ or higher
N11-4 (R-) - Body ground	Always	10 kΩ or higher
N11-3 (L+) - Body ground	Always	10 kΩ or higher
N11-2 (L-) - Body ground	Always	10 kΩ or higher

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

Speaker Circuit

DESCRIPTION If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers. Thus sound cannot be heard from the speakers ...

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