| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Audio/Visual/Telematics | Section: Audio/Video | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000001XJI015X |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Speaker Circuit |
DESCRIPTION
The stereo component amplifier sends sound signals to the speakers.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK AUDIO MODELS |
(a) Check the audio model.
Result
|
Result |
Proceed to |
|---|---|
|
DVD changer models |
A |
|
CD changer models |
B |
|
|
2. |
CHECK SPEAKER |
(a) Check the malfunctioning speakers.
Result
|
Result |
Proceed to |
|---|---|
|
Malfunction in front speaker area |
A |
|
Malfunction in rear speaker area |
B |
|
|
3. |
CHECK SPEAKER |
(a) Check the malfunctioning speakers.
Result
|
Result |
Proceed to |
|---|---|
|
Front No. 4 speaker |
A |
|
Front No. 2 speaker |
B |
|
Front No. 1 speaker |
C |
|
Front No. 3 speaker |
D |
|
|
4. |
INSPECT FRONT NO. 4 SPEAKER ASSEMBLY |
|
(a) Disconnect the F6 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
6.0 +/-1.0 Ω |
|
|
5. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 4 SPEAKER) |
|
(a) Disconnect the F6 speaker connector. |
(b) Disconnect the F3 amplifier connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F3-3 (CTR+) - F6-1 |
Always |
Below 1 Ω |
|
F3-9 (CTR-) - F6-2 |
Always |
Below 1 Ω |
|
F3-3 (CTR+) - Body ground |
Always |
10 kΩ or higher |
|
F3-9 (CTR-) - Body ground |
Always |
10 kΩ or higher |
|
|
6. |
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
|
(a) Disconnect the F8 and F7 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
Below 1 Ω |
|
3 - 4 |
Always |
Below 1 Ω |
|
2 - 4 |
Always |
6.0 +/-1.0 Ω |
|
|
7. |
CHECK DEFECTIVE SPEAKER AND VEHICLE EQUIPMENT |
(a) Check which side of the vehicle the defective speaker is on. Also, check if the vehicle is equipped with the LEXUS Link System.
Result
|
Result |
Proceed to |
|---|---|
|
Defective speaker is on right side (w/ LEXUS Link System) |
A |
|
Defective speaker is on right side (w/o LEXUS Link System) |
B |
|
Defective speaker is on left side |
B |
|
|
8. |
CHECK HARNESS AND CONNECTOR (TELEPHONE ECU - STEREO COMPONENT AMPLIFIER AND FRONT NO. 2 SPEAKER) |
|
(a) Disconnect the F31 amplifier connector. |
(b) Disconnect the F7 speaker connector.
(c) Disconnect the P2 ECU connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F7-1 (+) - P2-2 (SPO+) |
Always |
Below 1 Ω |
|
F7-3 (-) - P2-3 (SPO-) |
||
|
F31-8 (FR+) - P2-10 (SPI+) |
||
|
F31-7 (FR-) - P2-11 (SPI-) |
||
|
F7-1 (+) - Body ground |
Always |
10 kΩ or higher |
|
F7-3 (-) - Body ground |
||
|
F31-8 (FR+) - Body ground |
||
|
F31-7 (FR-) - Body ground |
|
|
9. |
CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY (OPERATION) |
(a) Replace the stereo component amplifier with a normal one and check that audio can be heard from the front RH side speaker
.
OK:
Audio can be heard.
|
|
10. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) |
|
(a) Disconnect the F31 amplifier connector. |
(b) Disconnect the F8 and F7 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-2 (FL+) - F8-1 (+) |
Always |
Below 1 Ω |
|
F31-6 (FL-) - F8-3 (-) |
Always |
Below 1 Ω |
|
F31-2 (FL+) - Body ground |
Always |
10 kΩ or higher |
|
F31-6 (FL-) - Body ground |
Always |
10 kΩ or higher |
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-8 (FR+) - F7-1 (+) |
Always |
Below 1 Ω |
|
F31-7 (FR-) - F7-3 (-) |
Always |
Below 1 Ω |
|
F31-8 (FR+) - Body ground |
Always |
10 kΩ or higher |
|
F31-7 (FR-) - Body ground |
Always |
10 kΩ or higher |
|
|
11. |
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY |
|
(a) Disconnect the I10 and I1 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
1.9 +/-0.4 Ω |
|
|
12. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 1 SPEAKER) |
|
(a) Disconnect the I10 and I1 speaker connectors. |
(b) Disconnect the F4 amplifier connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F4-10 (WFL+) - I10-1 |
Always |
Below 1 Ω |
|
F4-8 (WFL-) - I10-2 |
Always |
Below 1 Ω |
|
F4-10 (WFL+) - Body ground |
Always |
10 kΩ or higher |
|
F4-8 (WFL-) - Body ground |
Always |
10 kΩ or higher |
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F4-5 (WFR+) - I1-1 |
Always |
Below 1 Ω |
|
F4-11 (WFR-) - I1-2 |
Always |
Below 1 Ω |
|
F4-5 (WFR+) - Body ground |
Always |
10 kΩ or higher |
|
F4-11 (WFR-) - Body ground |
Always |
10 kΩ or higher |
|
|
13. |
CHECK FRONT NO. 3 SPEAKER ASSEMBLY |
(a) Disconnect the F14 and F13 speaker connectors.
(b) Interchange the front No. 3 speaker LH with RH.
(c) Check that the malfunction disappears.
OK:
Malfunction disappears.
HINT:
- Connect all the connectors to the front No. 3 speakers.
- When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.
- Perform the inspection above on both the LH and RH sides.
|
|
14. |
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
|
(a) Disconnect the F8 and F7 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2 - 4 |
Always |
6.0 +/-1.0 Ω |
|
|
15. |
CHECK SPEAKER |
(a) Check the malfunctioning speakers.
Result
|
Result |
Proceed to |
|---|---|
|
Rear No. 2 speaker |
A |
|
Rear No. 3 speaker |
B |
|
Rear speaker set |
C |
|
No. 1 woofer box speaker |
D |
|
Rear header speaker |
E |
|
|
16. |
INSPECT REAR NO. 2 SPEAKER ASSEMBLY |
|
(a) Disconnect the rear No. 2 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
6.0 +/-1.0 Ω |
|
|
17. |
CHECK REAR NO. 3 SPEAKER ASSEMBLY |
(a) Disconnect the rear No. 3 speaker connectors.
(b) Interchange the rear No. 3 speaker LH with RH.
(c) Check that the malfunction disappears.
OK:
Malfunction disappears.
HINT:
- Connect all the connectors to the rear No. 3 speakers.
- When there is a possibility that either the right or left rear speaker is defective, inspect by interchanging the right one with the left one.
- Perform the inspection above on both the LH and RH sides.
|
|
18. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR NO. 3 SPEAKER) |
|
(a) Disconnect the F31 amplifier connector. |
(b) Disconnect the J8 and J1 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-3 (R-L+) - J8-1 (+) |
Always |
Below 1 Ω |
|
F31-9 (R-L-) - J8-2 (-) |
Always |
Below 1 Ω |
|
F31-3 (R-L+) - Body ground |
Always |
10 kΩ or higher |
|
F31-9 (R-L-) - Body ground |
Always |
10 kΩ or higher |
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-4 (R-R+) - J1-1 (+) |
Always |
Below 1 Ω |
|
F31-10 (R-R-) - J1-2 (-) |
Always |
Below 1 Ω |
|
F31-4 (R-R+) - Body ground |
Always |
10 kΩ or higher |
|
F31-10 (R-R-) - Body ground |
Always |
10 kΩ or higher |
|
|
19. |
INSPECT REAR SPEAKER SET |
|
(a) Disconnect the J17 and J15 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
6.0 +/-1.2 Ω |
|
|
20. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR SPEAKER SET) |
|
(a) Disconnect the F3 and F31 speaker connectors. |
(b) Disconnect the J17 and J15 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F3-4 (RL+) - J17-1 |
Always |
Below 1 Ω |
|
F3-10 (RL-) - J17-2 |
||
|
F3-4 (RL+) - Body ground |
Always |
10 kΩ or higher |
|
F3-10 (RL-) - Body ground |
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-1 (RR+) - J15-1 |
Always |
Below 1 Ω |
|
F31-5 (RR-) - J15-2 |
||
|
F31-1 (RR+) - Body ground |
Always |
10 kΩ or higher |
|
F31-5 (RR-) - Body ground |
|
|
21. |
INSPECT NO. 1 WOOFER BOX SPEAKER ASSEMBLY |
|
(a) Disconnect the L4 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
8.0 Ω |
|
|
22. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - NO. 1 WOOFER BOX SPEAKER) |
|
(a) Disconnect the F3 amplifier connector. |
(b) Disconnect the L4 speaker connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F3-1 (WF1+) - L4-1 (WF1+) |
Always |
Below 1 Ω |
|
F3-6 (WF1-) - L4-2 (WF1-) |
Always |
Below 1 Ω |
|
F3-1 (WF1+) - Body ground |
Always |
10 kΩ or higher |
|
F3-6 (WF1-) - Body ground |
Always |
10 kΩ or higher |
|
|
23. |
INSPECT REAR HEADER SPEAKER ASSEMBLY |
|
(a) Disconnect the S9 and S8 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
6.0 +/-1.0 Ω |
|
|
24. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR HEADER SPEAKER) |
|
(a) Disconnect the F4 amplifier connector. |
(b) Disconnect the S9 and S8 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F4-2 (SL+) - S9-1 (RLD+) |
Always |
Below 1 Ω |
|
F4-7 (SL-) - S9-2 (RLD-) |
Always |
Below 1 Ω |
|
F4-2 (SL+) - Body ground |
Always |
10 kΩ or higher |
|
F4-7 (SL-) - Body ground |
Always |
10 kΩ or higher |
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F4-1 (SR+) - S8-1 (RRD+) |
Always |
Below 1 Ω |
|
F4-6 (SR-) - S8-2 (RRD-) |
Always |
Below 1 Ω |
|
F4-1 (SR+) - Body ground |
Always |
10 kΩ or higher |
|
F4-6 (SR-) - Body ground |
Always |
10 kΩ or higher |
|
|
25. |
CHECK SPEAKER |
(a) Check the malfunctioning speakers.
Result
|
Result |
Proceed to |
|---|---|
|
Front No. 4 speaker |
A |
|
Front No. 2 speaker |
B |
|
Front No. 1 speaker |
C |
|
Front No. 3 speaker |
D |
|
Rear speaker set |
E |
|
|
26. |
INSPECT FRONT NO. 4 SPEAKER ASSEMBLY |
|
|
(a) Disconnect the F6 speaker connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
6 Ω |
|
|
27. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 4 SPEAKER) |
|
|
(a) Disconnect the F6 speaker connector. |
(b) Disconnect the F3 amplifier connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F3-3 (CTR+) - F6-1 |
Always |
Below 1 Ω |
|
F3-9 (CTR-) - F6-2 |
Always |
Below 1 Ω |
|
F3-3 (CTR+) - Body ground |
Always |
10 kΩ or higher |
|
F3-9 (CTR-) - Body ground |
Always |
10 kΩ or higher |
|
|
28. |
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
|
|
(a) Disconnect the F8 and F7 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
Below 1 Ω |
|
3 - 4 |
Always |
Below 1 Ω |
|
2 - 4 |
Always |
4 Ω |
|
|
29. |
CHECK DEFECTIVE SPEAKER AND VEHICLE EQUIPMENT |
(a) Check which side of the vehicle the defective speaker is on. Also, check if the vehicle is equipped with the LEXUS Link System.
Result
|
Result |
Proceed to |
|---|---|
|
Defective speaker is on right side (w/ LEXUS Link System) |
A |
|
Defective speaker is on right side (w/o LEXUS Link System) |
B |
|
Defective speaker is on left side |
B |
|
|
30. |
CHECK HARNESS AND CONNECTOR (TELEPHONE ECU - STEREO COMPONENT AMPLIFIER AND FRONT NO. 2 SPEAKER) |
|
(a) Disconnect the F31 amplifier connector. |
(b) Disconnect the F7 speaker connector.
(c) Disconnect the P2 ECU connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F7-1 (+) - P2-2 (SPO+) |
Always |
Below 1 Ω |
|
F7-3 (-) - P2-3 (SPO-) |
||
|
F31-8 (FR+) - P2-10 (SPI+) |
||
|
F31-7 (FR-) - P2-11 (SPI-) |
||
|
F7-1 (+) - Body ground |
Always |
10 kΩ or higher |
|
F7-3 (-) - Body ground |
||
|
F31-8 (FR+) - Body ground |
||
|
F31-7 (FR-) - Body ground |
|
|
31. |
CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY |
(a) Replace the stereo component amplifier with a normal one and check that audio can be heard from the front RH side speaker
.
OK:
Audio can be heard.
|
|
32. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) |
|
(a) Disconnect the F31 amplifier connector. |
(b) Disconnect the F8 and F7 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-2 (FL+) - F8-1 (+) |
Always |
Below 1 Ω |
|
F31-6 (FL-) - F8-3 (-) |
Always |
Below 1 Ω |
|
F31-2 (FL+) - Body ground |
Always |
10 kΩ or higher |
|
F31-6 (FL-) - Body ground |
Always |
10 kΩ or higher |
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-8 (FR+) - F7-1 (+) |
Always |
Below 1 Ω |
|
F31-7 (FR-) - F7-3 (-) |
Always |
Below 1 Ω |
|
F31-8 (FR+) - Body ground |
Always |
10 kΩ or higher |
|
F31-7 (FR-) - Body ground |
Always |
10 kΩ or higher |
|
|
33. |
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY |
|
|
(a) Disconnect the I10 and I1 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
3 Ω |
|
|
34. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 1 SPEAKER) |
|
(a) Disconnect the I10 and I1 speaker connectors. |
(b) Disconnect the F31 and F3 amplifier connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F3-4 (WFL+) - I10-1 |
Always |
Below 1 Ω |
|
F3-10 (WFL-) - I10-2 |
Always |
Below 1 Ω |
|
F3-4 (WFL+) - Body ground |
Always |
10 kΩ or higher |
|
F3-10 (WFL-) - Body ground |
Always |
10 kΩ or higher |
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-1 (WFR+) - I1-1 |
Always |
Below 1 Ω |
|
F31-5 (WFR-) - I1-2 |
Always |
Below 1 Ω |
|
F31-1 (WFR+) - Body ground |
Always |
10 kΩ or higher |
|
F31-5 (WFR-) - Body ground |
Always |
10 kΩ or higher |
|
|
35. |
INSPECT FRONT NO. 3 SPEAKER ASSEMBLY |
|
(a) Disconnect the F14 and F13 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
4 Ω |
|
|
36. |
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
|
|
(a) Disconnect the F8 and F7 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
Below 1 Ω |
|
3 - 4 |
Always |
Below 1 Ω |
|
2 - 4 |
Always |
4 Ω |
|
|
37. |
INSPECT REAR SPEAKER SET |
|
|
(a) Disconnect the J17 and J15 speaker connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
4 Ω |
|
|
38. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR SPEAKER SET) |
|
(a) Disconnect the F31 amplifier connector. |
(b) Disconnect the J17 and J15 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-3 (RL+) - J17-1 (+) |
Always |
Below 1 Ω |
|
F31-9 (RL-) - J17-2 (-) |
Always |
Below 1 Ω |
|
F31-3 (RL+) - Body ground |
Always |
10 kΩ or higher |
|
F31-9 (RL-) - Body ground |
Always |
10 kΩ or higher |
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F31-4 (RR+) - J15-1 (+) |
Always |
Below 1 Ω |
|
F31-10 (RR-) - J15-2 (-) |
Always |
Below 1 Ω |
|
F31-4 (RR+) - Body ground |
Always |
10 kΩ or higher |
|
F31-10 (RR-) - Body ground |
Always |
10 kΩ or higher |
|
|
|