Speaker Circuit
AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM (w/o Navigation System without Multi-display): Speaker Circuit
- Speaker Circuit
DESCRIPTION
If there is a short in a speaker circuit, the stereo component amplifier assembly detects the short 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 assembly, DCM (telematics transceiver)*1 or speakers.
* *1: w/ Manual (SOS) Switch
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK HARNESS AND CONNECTOR
(a) Disconnect the connectors from the stereo component amplifier assembly, DCM (telematics transceiver)*1 and speakers.
*1: w/ Manual (SOS) Switch
(b) Measure the resistance between the front No. 1 speaker LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.
Standard Resistance:
(c) w/o Manual (SOS) Switch:
Measure the resistance between the front No. 1 speaker RH and the stereo component amplifier assembly to check for an open circuit in the wire harness.
Standard Resistance:
(d) w/ Manual (SOS) Switch:
Measure the resistance between the stereo component amplifier assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness.
Standard Resistance:
(e) w/ Manual (SOS) Switch:
Measure the resistance between the front No. 1 speaker RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness.
Standard Resistance:
(f) Measure the resistance between each of the front No. 3 speakers and the stereo component amplifier assembly 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 front No. 3 speakers 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 assembly to check for an open circuit in the wire harness.
Standard Resistance:
for 13 Speakers
for 8 Speakers
(i) for 13 Speakers:
Measure the resistance between each of the rear No. 3 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.
Standard Resistance:
(j) for 13 Speakers:
Measure the resistance between each of the rear No. 2 speakers and the rear No. 3 speakers to check for an open circuit in the wire harness.
Standard Resistance:
(k) for 13 Speakers:
Measure the resistance between the stereo component speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness.
Standard Resistance:
(l) Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.
Standard Resistance:
*1: for 13 Speakers
(m) w/ Manual (SOS) Switch:
Measure the resistance between the front No. 1 speaker RH and body ground to check for a short circuit in the wire harness.
Standard Resistance:
(n) Measure the resistance between each of the front No. 2 speakers and body ground to check for a short circuit in the wire harness.
Standard Resistance:
(o) for 13 Speakers:
Measure the resistance between each of the rear No. 2 speakers and body ground to check for a short circuit in the wire harness.
Standard Resistance:
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 according to the value(s) in the table below.
Standard Resistance:
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 according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE FRONT NO. 2 SPEAKER Removal
OK -- Continue to next step.
4. INSPECT FRONT NO. 3 SPEAKER
(a) Resistance check
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE FRONT NO. 3 SPEAKER Removal
OK -- Continue to next step.
5. INSPECT REAR SPEAKER
(a) Resistance check
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for 13 Speakers
for 8 Speakers
Text in Illustration
(b) Proceed to the next step based on the inspection result.
Result:
B -- INSPECT DCM (TELEMATICS TRANSCEIVER)
C -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
D -- REPLACE REAR SPEAKER Removal
A -- Continue to next step.
6. INSPECT REAR NO. 2 SPEAKER
(a) Resistance check
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE REAR NO. 2 SPEAKER Removal
OK -- Continue to next step.
7. INSPECT REAR NO. 3 SPEAKER
(a) Resistance check
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE REAR NO. 3 SPEAKER Removal
OK -- Continue to next step.
8. INSPECT STEREO COMPONENT SPEAKER
(a) Resistance check
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
(b) Proceed to the next step based on the inspection result.
Result:
B -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
C -- REPLACE STEREO COMPONENT SPEAKER Removal
A -- Continue to next step.
9. INSPECT DCM (TELEMATICS TRANSCEIVER)
(a) Resistance check
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE DCM (TELEMATICS TRANSCEIVER) Removal
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE