landrover Workshop Repair Guides

Land Rover Workshop Service and Repair Manuals

Service Mode|Page 786 > < Navigation System Diagnostics
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ENTERTAINMENT AND INFORMATION SYSTEMS

86-8-56 DESCRIPTION AND OPERATION

Fault codes
Fault codes are stored in the memory of the system ECUs and are accessed using TestBook/T4. The following table 
'ECU fault codes' lists the faults that can be stored by the navigation computer memory.

ECU fault codes

Service Mode
To enter service mode on the high line system, select SET on the menu screen and hold the menu button for eight 
seconds. This will then display the 'service mode' menu screen.

l

On-board monitor

l

NAVIGATION / GRAPHIC ELEMENT

l

Video module

l

GPS 

l

Sensor check.

On-board Monitor
Selecting the 'On-board monitor' option displays the 'On-board monitor version' screen as follows.

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SW level

l

HW level

l

DIAG index

l

Bus index

l

Encoding index

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Supplier.

If version is selected the 'ON BOARD MONITOR VERSION' screen will be displayed as described above.

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Version

l

Key function

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Brightness- the screen brightness can be adjusted by selecting this option.

Select the 'Key function' menu by rotating the LH rotary control and depressing it. The 'ON-BOARD MONITOR KEY 
FUNCTION' screen will be displayed. This allows each key on the display unit to be checked for operation. The screen 
also shows the following information:

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Key, the screen will show FF if no keys are pressed or FEH if several keys are pressed. The KEY box will change 
to reflect the button that has been pressed

l

OBM increm sensor- The 'OBM increm sensor' box changes its value as the RH rotary control is turned

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Radio increment sensor- The 'OBM increm sensor' box changes its value when the LH (audio) rotary control is 
turned.

Navigation / Graphic Element
Selecting the Navigation / graphic element displays the following options:

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SW level

l

HW level

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DIAG index

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Bus index

l

Encoding index

l

Supplier.

Fault code

Description

01

Navigation computer error

04

GPS sensor error

05

Temperature error

06

Application software error

07

Display error

08

Audio error

09

CD error

Service Mode|Page 786 > < Navigation System Diagnostics