Speaker Circuit

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: Speaker Circuit
- Speaker Circuit

DESCRIPTION

The sound signals amplified by the stereo component amplifier are sent to the speakers from the stereo component amplifier through this circuit.

If there is a short in this circuit, the stereo component amplifier detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier or speakers.

If a short is detected in the speaker circuit, no sound can be heard from the speakers.

WIRING DIAGRAM









INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR

(a) Disconnect the stereo component amplifier connector.





(b) Disconnect the stereo component amplifier connector.





(c) Disconnect the front No. 1 speaker connectors.





(d) Disconnect the front No. 2 speaker connectors.





(e) Disconnect the rear speaker connectors.





(f) Measure the resistance between each of the front No. 1 speakers and the stereo component amplifier to check for an open circuit in the wire harness.

Standard Resistance:





(g) Measure the resistance between each of the front No. 2 speakers and the stereo component amplifier to check for an open circuit in the wire harness.

Standard Resistance:





(h) Measure the resistance between each of the rear speakers and the stereo component amplifier to check for an open circuit in the wire harness.

Standard Resistance:





(i) Measure the resistance between each speaker and body ground to check for a short circuit in the wire harness.

Standard Resistance:





Text in Illustration

Text in Illustration:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. INSPECT FRONT NO. 1 SPEAKER

(a) Resistance check





(1) Measure the resistance between the terminals of the speaker.

Standard Resistance:





NOTICE:
The speaker should not be removed to check resistance.

Text in Illustration

Text in Illustration:

NG -- REPLACE FRONT NO. 1 SPEAKER Removal
OK -- Continue to next step.

3. INSPECT FRONT NO. 2 SPEAKER

(a) Resistance check





(1) Measure the resistance between the terminals of the speaker.

Standard Resistance:





NOTICE:
The speaker should not be removed to check resistance.

Text in Illustration

Text in Illustration:

NG -- INSPECT REAR SPEAKER

OK -- REPLACE FRONT NO. 2 SPEAKER Removal

4. INSPECT REAR SPEAKER

(a) Resistance check





(1) Measure the resistance between the terminals of the speaker.

Standard Resistance:





NOTICE:
The speaker should not be removed to check resistance.

Text in Illustration

Text in Illustration:

NG -- REPLACE REAR SPEAKER

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table