Speaker Circuit (Independent Amplifier)

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: Speaker Circuit (Independent Amplifier)

Speaker Circuit (Independent Amplifier)

DESCRIPTION

The stereo component amplifier assembly sends sound signals to the speaker.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK SPEAKER
(a) Check the malfunctioning speakers.

Result





B -- CHECK SPEAKER
A -- Continue to next step.

2. CHECK SPEAKER
(a) Check the malfunctioning speakers.

Result





B -- INSPECT FRONT NO. 2 SPEAKER ASSEMBLY
A -- Continue to next step.

3. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY




(a) Disconnect the S16*1 and S15*2 speaker connectors.
HINT: *1: for RH Side
*2: for LH Side
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(c) Reconnect the speaker connectors.
NG -- REPLACE FRONT NO. 1 SPEAKER ASSEMBLY
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 1 SPEAKER)




(a) Disconnect the S16*1 and S15*2 speaker connectors.
HINT: *1: for RH Side
*2: for LH Side
(b) Disconnect the S24 stereo component amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

for LH Side





for RH Side





(d) Reconnect the speaker connectors.
(e) Reconnect the stereo component amplifier assembly connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
5. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY




(a) Disconnect the S20*1 and S19*2 speaker connectors.
HINT: *1: for RH Side
*2: for LH Side
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(c) Reconnect the speaker connectors.
NG -- REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER)




(a) Disconnect the S31 stereo component amplifier assembly connector.
(b) Disconnect the S20*1 and S19*2 speaker connectors.
HINT: *1: for RH Side
*2: for LH Side
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

for LH Side





for RH Side





(d) Reconnect the stereo component amplifier assembly connector.
(e) Reconnect the speaker connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
7. CHECK SPEAKER
(a) Check the malfunctioning speakers.

Result





B -- INSPECT NO. 1 SPEAKER ASSEMBLY WITH BOX
A -- Continue to next step.

8. INSPECT REAR SPEAKER ASSEMBLY




(a) Disconnect the S18*1 and S17*2 speaker connectors.
HINT: *1: for RH Side
*2: for LH Side
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(c) Reconnect the speaker connectors.
NG -- REPLACE REAR SPEAKER ASSEMBLY
OK -- Continue to next step.

9. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR SPEAKER)




(a) Disconnect the S31 stereo component amplifier assembly connector.
(b) Disconnect the S18*1 and S17*2 speaker connectors.
HINT: *1: for RH Side
*2: for LH Side
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

for LH Side





for RH Side





(d) Reconnect the stereo component amplifier assembly.
(e) Reconnect the speaker connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
10. INSPECT NO. 1 SPEAKER ASSEMBLY WITH BOX




(a) Disconnect the S21 speaker connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(c) Reconnect the speaker connector.
NG -- REPLACE NO. 1 SPEAKER ASSEMBLY WITH BOX
OK -- Continue to next step.

11. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - W/ BOX NO. 1 SPEAKER)




(a) Disconnect the S24 stereo component amplifier assembly connector.
(b) Disconnect the S21 speaker connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(d) Reconnect the stereo component amplifier assembly connector.
(e) Reconnect the speaker connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE