Operation CHARM: Car repair manuals for everyone.
Home >> Toyota >> 2009 >> Tacoma 2WD L4-2.7L (2TR-FE) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Radio, Stereo, and Compact Disc >> Testing and Inspection >> Component Tests and General Diagnostics >> Speaker Circuit (Built-In Amplifier)

Speaker Circuit (Built-In Amplifier)








AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: Speaker Circuit (Built-in Amplifier)

Speaker Circuit (Built-in Amplifier)

DESCRIPTION

The radio receiver assembly sends sound signals to the speaker.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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

Result





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

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

Result





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

3. 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:






Result





(c) Reconnect the speaker connectors.
C -- REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
B -- REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
A -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)




(a) Disconnect the R1 radio receiver 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 radio receiver 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
5. 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:






Result





(c) Reconnect the speaker connectors.
C -- REPLACE FRONT NO. 1 SPEAKER ASSEMBLY
B -- REPLACE FRONT NO. 1 SPEAKER ASSEMBLY
A -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)




(a) Disconnect the S16*1, S15*2, 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:

for LH Side





for RH Side





(c) Reconnect the speaker connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
7. CHECK REAR SIDE SPEAKER
(a) Check the malfunctioning speakers.

Result





HINT: *1: for Double CAB
*2: for 7 Speakers
*3: for Access CAB

C -- INSPECT ROOF SPEAKER ASSEMBLY
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 (RADIO RECEIVER - REAR SPEAKER ASSEMBLY)




(a) Disconnect the R2 radio receiver 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 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 S30 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 (RADIO RECEIVER - NO. 1 SPEAKER ASSEMBLY WITH BOX)




(a) Disconnect the R2 radio receiver assembly connector.
(b) Disconnect the S30 no. 1 speaker assembly with box 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 radio receiver 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
12. INSPECT ROOF SPEAKER ASSEMBLY




(a) Disconnect the R12*1 and R13*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 ROOF SPEAKER ASSEMBLY
OK -- Continue to next step.

13. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - CONDENSER - ROOF SPEAKER)




(a) Disconnect the R2 radio receiver assembly connector.
(b) Disconnect the R11 condenser connector.
(c) Disconnect the R12*1 and R13*2 speaker connectors.
HINT: *1: for RH Side
*2: for LH Side
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

for LH Side





for RH Side





(e) Reconnect the radio receiver assembly connector.
(f) Reconnect the condenser connector.
(g) Reconnect the speaker connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

14. REPLACE CONDENSER
(a) Replace the condenser with a new or normal.
HINT:
- 1GR-FE Removal
- 2TR -FE Removal

OK:
Sound is heard from the roof speakers.
NG -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
OK -- END
pro multis · About Operation CHARM