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Last Modified: 11-29-2007 |
1.6 J |
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Service Category: Audio/Visual/Telematics |
Section: Audio/Video |
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Model Year: 2008 |
Model: Sequoia |
Doc ID: RM0000033VX003X |
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Title: AUDIO / VIDEO: REAR SEAT ENTERTAINMENT SYSTEM: DESCRIPTION (2008 Sequoia) |
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Sound Signal Circuit between Navigation Receiver Assembly and Television Display Assembly
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DESCRIPTION
This circuit sends a sound signal from the television display assembly to the navigation receiver assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
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1.
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CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY - NAVIGATION RECEIVER ASSEMBLY)
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(a) Disconnect the U2 television display assembly connector.
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(b) Disconnect the I25 navigation receiver assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
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Tester Connection
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Condition
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Specified Condition
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I25-2 (CDR+) - U2-28 (R+)
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Always
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Below 1 Ω
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I25-3 (CDR-) - U2-29 (R-)
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I25-4 (CDL+) - U2-30 (L+)
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I25-5 (CDL-) U2-31 (L-)
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I25-1 (CSLD) - U2-27 (SLD9)
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I25-2 (CDR+) - Body ground
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Always
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10 kΩ or higher
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I25-3 (CDR-) - Body ground
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I25-4 (CDL+) - Body ground
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I25-5 (CDL-) Body ground
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I25-1 (CSLD) - Body ground
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(d) Reconnect the television display assembly connector.
(e) Reconnect the navigation receiver assembly connector.
| OK |
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2.
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INSPECT TELEVISION DISPLAY ASSEMBLY
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(a) Using an oscilloscope, check the waveform between each terminal and the body ground according to the conditions, as shown in the table below.
OK: Waveform:
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Tester Connection
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Condition
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Specified Condition
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U2-28 (R+) - Body ground
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Audio sound is being produced
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A waveform synchronized with sound is output
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U2-29 (R-) - Body ground
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U2-30 (L+) - Body ground
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U2-31 (L-) - Body ground
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| OK |
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