| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Audio/Visual/Telematics | Section: Audio/Video | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002IPZ009X |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DESCRIPTION (2008 LX570) | ||
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Sound Signal Circuit between Multi-display Controller and Navigation Assembly |
DESCRIPTION
This is the sound signal circuit from the display and navigation module display to the multi-display selector.
HINT:
- Only vehicles with a navigation system have this circuit.
- "Multi-display Controller" refers to the multi-display selector.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - MULTI-DISPLAY SELECTOR) |
|
(a) Disconnect the F34 navigation connector. |
(b) Disconnect the L23 selector connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F34-3 (FL+) - L23-3 (L5+) |
Always |
Below 1 Ω |
|
F34-4 (FL-) - L23-4 (L5-) |
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F34-1 (FR+) - L23-1 (R5+) |
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F34-2 (FR-) - L23-2 (R5-) |
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F34-3 (FL+) - Body ground |
Always |
10 kΩ or higher |
|
F34-4 (FL-) - Body ground |
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F34-1 (FR+) - Body ground |
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F34-2 (FR-) - Body ground |
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F34-5 (SLD1) - Body ground |
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2. |
CHECK DISPLAY AND NAVIGATION MODULE DISPLAY |
|
(a) Reconnect the F34 navigation connector. |
(b) Using an oscilloscope, check the signal waveform between each terminal and body ground according to the conditions shown in the chart below.
Signal Waveform:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
L23-3 (L5+) - Body ground |
Audio sound is being produced |
A waveform synchronized with sound is output |
|
L23-4 (L5-) - Body ground |
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L23-1 (R5+) - Body ground |
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L23-2 (R5-) - Body ground |
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