Speaker Circuit (Built-In Amplifier)

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM (for Regular Cab and Double Cab): Speaker Circuit (Built-in Amplifier)

Speaker Circuit (Built-in Amplifier)

DESCRIPTION

The stereo component amplifier sends sound signals to the speaker.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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

Result:





HINT: *: for Double Cab

B -- INSPECT REAR NO. 1 SPEAKER
A -- Continue to next step.
2. CHECK SPEAKER
(a) Check the malfunctioning speakers.

Result:





B -- INSPECT FRONT NO. 1 SPEAKER
A -- Continue to next step.
3. INSPECT FRONT NO. 2 SPEAKER




(a) Disconnect the K11 and K13 speaker connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for LH






for RH






Result:





C -- REPLACE FRONT NO. 2 SPEAKER
B -- REPLACE FRONT NO. 2 SPEAKER
A -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - FRONT NO. 2 SPEAKER)




(a) Disconnect the K1 receiver connector.
(b) Disconnect the K11 and K13 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for LH






for RH






Result:





C -- REPLACE RADIO RECEIVER
B -- REPLACE RADIO RECEIVER
A -- REPAIR OR REPLACE HARNESS OR CONNECTOR
5. INSPECT FRONT NO. 1 SPEAKER




(a) Disconnect the M8 and N10 speaker connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






Result:





C -- REPLACE FRONT NO. 1 SPEAKER
B -- REPLACE FRONT NO. 1 SPEAKER
A -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 1 SPEAKER)




(a) Disconnect the M8, N10, K11 and K13 speaker connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for LH






for RH






Result:





C -- REPLACE FRONT NO. 2 SPEAKER
B -- REPLACE FRONT NO. 2 SPEAKER
A -- REPAIR OR REPLACE HARNESS OR CONNECTOR
7. INSPECT REAR NO. 1 SPEAKER




(a) Disconnect the O1 and O7 speaker connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE REAR NO. 1 SPEAKER
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - REAR NO. 1 SPEAKER)




(a) Disconnect the K2 receiver connector.
(b) Disconnect the O1 and O7 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for LH






for RH






Result:





C -- REPLACE RADIO RECEIVER
B -- REPLACE RADIO RECEIVER
A -- REPAIR OR REPLACE HARNESS OR CONNECTOR