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 Removal
B -- REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Removal
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 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 Removal
B -- REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Removal
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 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 Removal
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 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 Removal
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 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 t he roof speakers.
NG -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table
OK -- END