| Last Modified: 11-27-2007 | 1.6 U | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002T67005X |
| Title: SEAT: CLIMATE CONTROL SEAT SYSTEM: DATA LIST / ACTIVE TEST (2008 LX570) | ||
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
(a) Warm up the engine.
(b) Turn the engine switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the engine switch on (IG).
(e) Turn the Techstream on.
(f) Enter the following menus: Body Electrical / (desired system) / Data List.
(g) According to the display on the Techstream, read the Data List.
Front Left Seat A/C
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Cushion Temp |
Seat cushion temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) |
Within range from 0 to 85°C (32 to 185°F) |
- |
|
Seatback Temp |
Seatback temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) |
Within range from 0 to 85°C (32 to 185°F) |
- |
|
Seat Heat Temp |
Seat heater temperature signal / MIN: 0°C (32°F), MAX: 85°C (185°F) |
Within range from 0 to 85°C (32 to 185°F) |
- |
|
Cushion Blower |
Seat cushion blower signal / MIN: 0, MAX: 31 |
Within range from 0 to 31 |
- |
|
Cushion Duty |
Seat cushion peltier output signal / MIN: -100%, MAX: 100% |
Within range from -100 to 100% |
- |
|
Seatback Duty |
Seatback peltier output signal / MIN: -100%, MAX: 100% |
Within range from -100 to 100% |
- |
|
Seat Target Temp |
Seat heater target temperature signal / MIN: 0°C (32°F), MAX: 85°C (185°F) |
Within range from 0 to 85°C (32 to 185°F) |
- |
|
+B |
Power source / MIN: 0, MAX: 20 |
Within range from 11 to 14 |
- |
|
Number of Trouble Codes |
Number of Past DTCs / MIN: 0, MAX: 255 |
Within range from 0 to 255 |
- |
Front Right Seat A/C
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Cushion Temp |
Seat cushion temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) |
Within range from 0 to 85°C (32 to 185°F) |
- |
|
Seatback Temp |
Seatback temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) |
Within range from 0 to 85°C (32 to 185°F) |
- |
|
Seat Heat Temp |
Seat heater temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) |
Within range from 0 to 85°C (32 to 185°F) |
- |
|
Cushion Blower |
Seat cushion fan blower signal / MIN: 0, MAX: 31 |
Within range from 0 to 31 |
- |
|
Cushion Duty |
Seat cushion peltier output signal / MIN: -100%, MAX: 100% |
Within range from -100 to 100% |
- |
|
Seatback Duty |
Seatback peltier output signal / MIN: -100%, MAX: 100% |
Within range from -100 to 100% |
- |
|
Seat Target Temp |
Seat heater target temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) |
Within range from 0 to 85°C (32 to 185°F) |
- |
|
+B |
Power source / MIN: 0, MAX: 20 |
Within range from 11 to 14 |
- |
|
Number of Trouble Codes |
Number of Past DTCs / MIN: 0, MAX: 255 |
Within range from 0 to 255 |
- |
2. PERFORM ACTIVE TEST
HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.
(a) Warm up the engine.
(b) Turn the engine switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the engine switch on (IG).
(e) Turn the Techstream on.
(f) Enter the following menus: Body Electrical / (desired system) / Active Test.
(g) According to the display on the Techstream, perform the Active Test.
Front Left Seat A/C
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Seat Heater Target Temperature |
Seat heater target operation |
0 to 85°C (5°C increments) {32 to 185°F (9°F increments)} |
- |
|
Airflow |
Airflow operation |
OFF / Low / High |
- |
|
Warm air |
Warm air operation |
OFF / ON |
- |
|
Cool air |
Cool air operation |
OFF / ON |
- |
Front Right Seat A/C
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Seat Heater Target Temperature |
Seat heater target operation |
0 to 85°C (5°C increments) {32 to 185°F (9°F increments)} |
- |
|
Airflow |
Airflow operation |
OFF / Low / High |
- |
|
Warm air |
Warm air operation |
OFF / ON |
- |
|
Cool air |
Cool air operation |
OFF / ON |
- |
|
|