| Last Modified: 11-29-2007 | 1.6 U | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM0000011W4011X |
| Title: SEAT: CLIMATE CONTROL SEAT SYSTEM: TERMINALS OF ECU (2008 Sequoia) | ||
TERMINALS OF ECU
1. AIR CONDITIONING AMPLIFIER
(a) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
H67-6 (SG-5) - Body ground |
BR - Body ground |
Ground |
Always |
Below 1 Ω |
|
H67-8 (S5-2) - Body ground |
SB - Body ground |
Power supply |
Ignition switch ON |
4.5 to 5.5 V |
|
H67-9 (SHD+) - Body ground |
W - Body ground |
Output climate control signal (Driver side) |
Ignition switch ON Seat heater switch blower side volume 3 |
Pulse generation (see waveform 1) |
|
H67-10 (SHP+) - Body ground |
O - Body ground |
Output climate control signal (Front passenger side) |
Ignition switch ON Seat heater switch blower side volume 3 |
Pulse generation (see waveform 1) |
|
H67-15 (AD-4) - Body ground |
GR - Body ground |
Input climate control signal (Driver side) |
Ignition switch ON Seat heater switch volume 0 |
4.5 to 5.5 V |
|
Ignition switch ON Seat heater switch blower side volume 3 |
Below 1 V |
|||
|
H67-16 (AD-5) - Body ground |
W - Body ground |
Input climate control signal (Front passenger side) |
Ignition switch ON Seat heater switch volume 0 |
4.5 to 5.5 V |
|
Ignition switch ON Seat heater switch blower side volume 3 |
Below 1 V |
If the result is not as specified, the air conditioning amplifier may have a malfunction.
|
(1) Waveform 1: Using an oscilloscope:
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