| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Sliding Roof/Convertible | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000UZV01KX |
| Title: SLIDING ROOF / CONVERTIBLE: SLIDING ROOF SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Sliding Roof Control Switch Circuit |
DESCRIPTION
The sliding roof drive gear (sliding roof ECU) receives sliding roof switch signals and drives its built-in motor.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (SLIDING ROOF OPERATION) |
(a) Select the Active Test, use the Techstream to generate a control command, and then check that the sliding roof slides open/closed and tilts up/down
.
Sliding Roof
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Slide Roof |
Slide close/tilt up operation |
Clos/Up: Sliding roof slide close or tilt up operation occurs OFF: Sliding roof is not operating |
Be careful to avoid injuries as this test causes vehicle parts to move. |
|
Slide Roof |
Slide open/tilt down operation |
Open/Dwn: Sliding roof slide open or tilt down operation occurs OFF: Sliding roof is not operating |
Be careful to avoid injuries as this test causes vehicle parts to move. |
OK:
Sliding roof operates normally.
|
|
2. |
READ VALUE USING TECHSTREAM (SLIDING ROOF SWITCH) |
(a) Use the Data List to check if the sliding roof switch is functioning properly
.
Sliding Roof
|
Item |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Open Switch |
Sliding roof switch open signal/ON or OFF |
ON: OPEN switch is pressed OFF: OPEN switch is not pressed |
- |
|
Close Switch |
Sliding roof switch close signal/ON or OFF |
ON: CLOSE switch is pressed OFF: CLOSE switch is not pressed |
- |
|
Up Switch |
Sliding roof switch tilt up signal/ON or OFF |
ON: UP switch is pressed OFF: UP switch is not pressed |
- |
|
Down Switch |
Sliding roof switch tilt down signal/ON or OFF |
ON: DOWN switch is pressed OFF: DOWN switch is not pressed |
- |
OK:
When the switch is operating, the Techstream should display as shown in the table.
|
|
3. |
INSPECT MAP LIGHT ASSEMBLY (SLIDING ROOF SWITCH) |
(a) Remove the map light
.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
A-24 (UP) - A-16 (GND9) |
UP switch is pressed |
Below 1 Ω |
|
A-24 (UP) - A-16 (GND9) |
UP switch is not pressed |
10 kΩ or higher |
|
A-23 (DOWN) - A-16 (GND9) |
DOWN switch is pressed |
Below 1 Ω |
|
A-23 (DOWN) - A-16 (GND9) |
DOWN switch is not pressed |
10 kΩ or higher |
|
B-3 (OPN) - A-16 (GND9) |
OPEN switch is pressed |
Below 1 Ω |
|
B-3 (OPN) - A-16 (GND9) |
OPEN switch is not pressed |
10 kΩ or higher |
|
B-12 (CLS) - A-16 (GND9) |
CLOSE switch is pressed |
Below 1 Ω |
|
B-12 (CLS) - A-16 (GND9) |
CLOSE switch is not pressed |
10 kΩ or higher |
|
|
4. |
CHECK HARNESS AND CONNECTOR (SLIDING ROOF DRIVE GEAR - MAP LIGHT) |
(a) Disconnect the R5 drive gear connector.
(b) Disconnect the R7 and R12 map light connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R5-10 (UP) - R7-24 (UP) |
Always |
Below 1 Ω |
|
R5-8 (DWN) - R7-23 (DOWN) |
Always |
Below 1 Ω |
|
R5-7 (OPN) - R12-3 (OPN) |
Always |
Below 1 Ω |
|
R5-9 (CLS) - R12-12 (CLS) |
Always |
Below 1 Ω |
|
R7-16 (GND9) - Body ground |
Always |
Below 1 Ω |
|
R5-2 (E) - Body ground |
Always |
Below 1 Ω |
|
R5-10 (UP) or R7-24 (UP) - Body ground |
Always |
10 kΩ or higher |
|
R5-8 (DWN) or R7-23 (DOWN) - Body ground |
Always |
10 kΩ or higher |
|
R5-7 (OPN) or R12-3 (OPN) - Body ground |
Always |
10 kΩ or higher |
|
R5-9 (CLS) or R12-12 (CLS) - Body ground |
Always |
10 kΩ or higher |
|
|
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