| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Audio/Visual/Telematics | Section: Navigation/Multi Info Display | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM0000011FO020X |
| Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Reverse Signal Circuit |
DESCRIPTION
The display and navigation module display receives a reverse signal from the park/neutral position switch and information about the navigation antenna, and then adjusts vehicle position.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK REVERSE SIGNAL (DISPLAY CHECK MODE) |
(a) Enter the "Display Check" mode and select "Vehicle Signal Check Mode"
.
(b) Check that the display changes between ON and OFF according to the shift lever operation.
OK:
|
Shift Lever Position |
Display |
|---|---|
|
R |
ON |
|
Except R |
OFF |
HINT:
This display is updated once per second. As a result, it is normal for the display to lag behind the actual change in the switch.
|
|
2. |
CHECK PARK/NEUTRAL POSITION SWITCH |
(a) Disconnect the F28 display connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F28-13 (REV) - Body ground |
Engine switch on (IG), shift lever moved to R |
11 to 14 V |
|
F28-13 (REV) - Body ground |
Engine switch on (IG), shift lever moved to other than R |
Below 1 V |
|
|
3. |
CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - PARK/NEUTRAL POSITION SWITCH) |
(a) Disconnect the F28 display connector.
(b) Disconnect the C19 position switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F28-13 (REV) - C19-1 |
Always |
Below 1 Ω |
|
F28-13 (REV) - Body ground |
Always |
10 kΩ or higher |
|
|
|