| Last Modified: 11-29-2007 | 1.6 U | |
| Service Category: Audio/Visual/Telematics | Section: Audio/Video | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM0000033VO003X |
| Title: AUDIO / VIDEO: REAR SEAT ENTERTAINMENT SYSTEM: TERMINALS OF ECU (2008 Sequoia) | ||
TERMINALS OF ECU
1. CHECK TELEVISION DISPLAY ASSEMBLY
(a) Disconnect the U2 television display assembly connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
U2-12 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
U2-15 (ACC) - U2-12 (GND) |
GR - W-B |
ACC power supply |
Ignition switch off |
Below 1 V |
|
Ignition switch ACC |
11 to 14 V |
|||
|
U2-16 (+B) - U2-12 (GND) |
L - W-B |
Battery |
Always |
11 to 14 V |
HINT:
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect U2 television display assembly connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
U2-3(HP2R) - U2-12 (GND) |
BR - W-B |
Headphone 2 right channel sound signal (output) |
Disc player is playing |
Waveform synchronized with sound is output |
|
U2-4(SLD2) - U2-12 (GND) |
Shielded - W-B |
Shielded |
Always |
Below 1 V |
|
U2-5(HP1R) - U2-12 (GND) |
G - W-B |
Headphone 1 right channel sound signal (output) |
Disc player is playing |
Waveform synchronized with sound is output |
|
U2-6 (VV+) - U2-12 (GND) |
BR - W-B |
Display signal (input) |
External device is playing, VTR is displayed |
Pulse generation |
|
U2-7 (R1+) - U2-12 (GND) |
G - W-B |
Right channel sound signal (input) |
Disc player is playing |
Waveform synchronized with sound is output |
|
U2-8 (L1+) - U2-12 (GND) |
R - W-B |
Left channel sound signal (input) |
Disc player is playing |
Waveform synchronized with sound is output |
|
U2-9 (SLD) - U2-12 (GND)* |
Shielded - W-B |
Shielded |
Always |
Below 1 V |
|
U2-10 (SGN1) - U2-12 (GND)* |
Y - W-B |
Shielded |
Always |
Below 1 V |
|
U2-11 (NTSC) - U2-12 (GND)* |
BR - W-B |
Display signal (output) |
DVD displayed on television display |
See waveform |
|
U2-13 (TX-) - U2-12 (GND) |
B - W-B |
AVC-LAN communication signal |
Ignition switch ACC |
2 to 3 V |
|
U2-14 (TX+) - U2-12 (GND) |
LG - W-B |
AVC-LAN communication signal |
Ignition switch ACC |
2 to 3 V |
|
U2-19(HP2L) - U2-12 (GND) |
Y - W-B |
Headphone 2 left channel sound signal (output) |
Disc player is playing |
Waveform synchronized with sound is output |
|
U2-20(SLD1) - U2-12 (GND) |
Shielded - W-B |
Shielded |
Always |
Below 1 V |
|
U2-21(HP1L) - U2-12 (GND) |
R - W-B |
Headphone 1 left channel sound signal (output) |
Disc player is playing |
Waveform synchronized with sound is output |
|
U2-22 (VV-) - U2-12 (GND) |
Y - W-B |
Ground |
Always |
Below 1 V |
|
U2-23 (SGND) - U2-12 (GND) |
Shielded - W-B |
Shielded |
Always |
Below 1 V |
|
U2-24 (ADPG) - U2-12 (GND) |
SB - W-B |
Video terminal ground |
Always |
Below 1 V |
|
U2-25 (SGN2) - U2-12 (GND) |
Shielded - W-B |
Shielded |
Always |
Below 1 V |
|
U2-26 (MUTE) - U2-12 (GND) |
O - W-B |
Mute signal |
Television display is playing → Changing modes |
3.5 V or higher → Below 1 V |
|
U2-27 (SLD9) - U2-12 (GND) |
Shielded - W-B |
Shielded |
Always |
Below 1 V |
|
U2-28 (R+) - U2-12 (GND) |
B - W-B |
Right channel sound signal (output) |
Disc player is playing |
Waveform synchronized with sound is output |
|
U2-29 (R-) - U2-12 (GND) |
G - W-B |
Right channel sound signal (output) |
Disc player is playing |
Waveform synchronized with sound is output |
|
U2-30 (L+) - U2-12 (GND) |
R - W-B |
Left channel sound signal (output) |
Disc player is playing |
Waveform synchronized with sound is output |
|
U2-31 (L-) - U2-12 (GND) |
W - W-B |
Left channel sound signal (output) |
Disc player is playing |
Waveform synchronized with sound is output |
HINT:
- *: w/ Navigation System
- If the result is not specified, the display may have a malfunction.
|
(e) Using an oscilloscope, check the waveform.
|
2. CHECK NAVIGATION RECEIVER ASSEMBLY (w/ Navigation System)
3. CHECK RADIO RECEIVER ASSEMBLY (w/o Navigation System)
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