Lexus RX300 (MCU15). Service manual — part 376

I17108

to 1. Diagnosis
MENU screen

DI–734

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DIAGNOSTICS

LEXUS NAVIGATION SYSTEM

LEXUS RX300 (RM785E)

3.

NAVIGATION CHECK MODE

HINT:
Navigation Check Mode is operated as follows.

I17105

Diagnosis MENU
screen switch

GPS information
mode screen switch

Vehicle sensor mode
screen switch

Color bar check
mode screen switch

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DIAGNOSTICS

LEXUS NAVIGATION SYSTEM

DI–735

LEXUS RX300 (RM785E)

(a)

NAVIGATION CHECK MODE SCREEN

(1)

Various check screens for the Navigation ECU can be started from this menu screen.

(2)

GPS Information Mode Screen Switch
Pressing this switch activates GPS Information Mode Screen.

(3)

Vehicle Sensor Mode Screen Switch
Pressing this switch activates the Vehicle Signal Mode screen.

(4)

Color Bar Check Mode Screed Switch
Pressing this switch activates the Color Bar Check Mode screen.

(5)

Diagnosis Menu Screen Switch
Pressing this switch activates the Diagnosis Menu screen.

I17104

Navigation Check
screen switch

Time data

Position data

Measurement Status

Satellite
Information

DI–736

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DIAGNOSTICS

LEXUS NAVIGATION SYSTEM

LEXUS RX300 (RM785E)

(b)

GPS INFORMATION MODE SCREEN

(1)

This screen displays GPS related data.

HINT:
Data are updated every 1 sec.

(2)

Satellite Information
The angle of elevation of relevant satellite, azimuth signal level, and receiving condition of sig-
nals are displayed.

HINT:
The reception status shows receiving.
”T”: means in operation but measurement is not being used for positioning.
”P”: means measurement is being used for positioning.
”–”: means no data can be received.
Display area for up to 8 satellites is ensured.
Data shall be updated corresponding to change of information.

(3)

Time data: The time data obtained from a GPS receiver is displayed in month, day, year, hour
and minute.

(4)

The displayed time is Greenwich Mean Time.

(5)

Position Data: The latitude and longitude of the current location are displayed in degree and min-
ute.

(6)

Measurement Status is displayed in the following 5 items.
2D: 2 dimensions.
3D: 3 dimensions.
NG: GPS information cannot be used.
error: Receiving error occurs.
–: Other than the above.

(7)

Navigation Check Screen Switch
Pressing this switch activates the Navigation Check screen.

I17106

Navigation check
screen switch

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DIAGNOSTICS

LEXUS NAVIGATION SYSTEM

DI–737

LEXUS RX300 (RM785E)

(c)

VEHICLE SIGNAL CHECK MODE SCREEN

(1)

Status of the vehicle sensor which are input to the Navigation ECU is checked in this screen.

HINT:
Data are updated every 1 sec.

(2)

ACC signal status: Displayed as ON/OFF.

(3)

REV signal status: Displayed as ON/OFF.

(4)

SPD signal status: The following is displayed:

S

The cumulative value of the input pulse after displaying this screen. (shown in 5 digits)

S

Vehicle speed (Unit: km/h, mph)

(5)

Output condition of the gyro sensor: The following is displayed:

S

Voltage (Unit: mV, LSB: 1mV)

S

Relative azimuthal angle to the current point (0 degree).
Assuming the angle at a point when this screen is activated as 0 degree.

(6)

Navigation Check Menu Screen Switch
Pressing this switch displays the Navigation Check screen.