| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Door/Hatch | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM0000025WS003X |
| Title: DOOR / HATCH: POWER BACK DOOR SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Power Back Door Opener / Closer Switch Circuit |
DESCRIPTION
The combination switch (power back door opener/closer switch) only turns on while the switch is being pressed, and turns off when the switch is released.
When the switch is on, a power back door operation request signal is input to the main body ECU to operate the back door.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (POWER BACK DOOR OPENER/CLOSER SWITCH) |
(a) Check the Data List for proper functioning of the power back door opener/closer switch.
Main Body
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Back Door Open SW |
Power back door opener/closer switch signal/ON or OFF |
ON: Power back door opener/closer switch on OFF: Power back door opener/closer switch off |
- |
OK:
The display is as specified in the normal condition.
|
|
2. |
INSPECT COMBINATION SWITCH ASSEMBLY (POWER BACK DOOR OPENER/CLOSER SWITCH) |
(a) Remove the combination switch
.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
8 (CSW) - 6 (GND) |
power back door opener/closer switch is pushed (on) |
Below 1 Ω |
|
8 (CSW) - 6 (GND) |
power back door opener/closer switch not pushed (off) |
10 kΩ or higher |
|
|
3. |
CHECK HARNESS AND CONNECTOR (SWITCH - ECU AND BODY GROUND) |
(a) Disconnect the E87 switch connector.
(b) Disconnect the E2 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E87-8 (CSW) - E2-2 (PBDS) |
Always |
Below 1 Ω |
|
E87-6 (GND) - Body ground |
Always |
Below 1 Ω |
|
E87-8 (CSW) - Body ground) |
Always |
10 kΩ or higher |
|
|
|