Discovery 2. Manual - part 782

 

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Discovery 2. Manual - part 782

 

 

INSTRUMENTS

DESCRIPTION AND OPERATION

88-37

Active Cornering Enhancement (ACE) warning lamp

On vehicles fitted with ACE an LED within the instrument pack is used to alert the driver that the ACE ECU has 
detected a fault in the system, providing the driver with a visible warning. The ACE warning lamp utilises an amber 
LED and a clear legend.

When the ignition is switched on the ACE ECU illuminates the LED to provide a self-check, providing there is no fault 
it will remain illuminated for 3 seconds or until the ignition is switched off.

The power input for the LED is supplied by the instrument pack via fuse 13. The ACE ECU provides the earth path to 
illuminate the warning lamp.

The voltage on the earth path from the ACE ECU to the instrument pack has the following functions:

l

< 1.8 volts = warning lamp on.

l

> 7.7 volts = warning lamp off.

INSTRUMENTS

88-38

DESCRIPTION AND OPERATION

Gearbox manual/sport mode warning lamps

The gearbox manual/sport mode warning lamps within the instrument pack each utilise a green LED and a clear 
legend. On vehicles fitted with an automatic gearbox, operating the manual mode switch instructs the Electronic 
Automatic Transmission (EAT) ECU to illuminate the manual mode LED. Operating the sport mode switch instructs 
the EAT ECU to illuminate the sport mode LED.

There is no self-test performed at ignition on for this warning lamp.

If the EAT ECU detects a fault it will cause both warning lamps to flash.

The power input for the LED's is supplied by the instrument pack. The EAT ECU applies a high or low voltage to the 
instrument pack microprocessor which measures the applied voltage from the ECU and illuminates the appropriate 
warning lamp.

The voltage on the earth paths from the EAT ECU to the instrument pack has the following functions:

Warning lamp response

Manual earth path, volts

Sport earth path, volts

No lamps

> 7.7

> 7.7

Sport warning

> 7.7

< 1.8

Manual warning

< 1.8

> 7.7

Both lamps flash

< 1.8

< 1.8

INSTRUMENTS

DESCRIPTION AND OPERATION

88-39

Anti-theft status warning lamp

The anti-theft status warning lamp within the instrument pack utilises a red LED and a clear legend. 

The BCU illuminates the LED when the vehicle anti-theft system is active.

This provides a warning to potential thieves that the vehicle is protected by a security system.

When the ignition is switched on, the ECM illuminates the LED to provide a self-check, providing there is no fault it 
will remain illuminated until the engine is started or the ignition is switched off.

The power input for the LED is supplied by the instrument pack via fuse 13. The BCU controls the earth path to 
illuminate the warning lamp.

The voltage on the earth path from the BCU to the instrument pack will be less than 1 volt when the anti-theft status 
is enabled.

INSTRUMENTS

88-40

DESCRIPTION AND OPERATION

Audible warning speaker

The audible warning speaker is integral with the instrument pack and provides an audible warning to alert the driver 
of the following situations:

l

Seat belt warning lamp.

l

Key in/lights on warning.

l

SLABS command received warning.

l

Transfer box in neutral warning.

l

Lights on warning.

It has a maximum pressure level of 87 dB at 1 metre (3.3 ft). The audible warning speaker is located on the rear of 
the instrument pack.

The power input for the audible warning speaker is supplied by the instrument pack via fuse 27. 

The BCU provides the earth paths for the following:

l

The seatbelt warning.

l

Key in/lights on warning.

l

Lights on warning.

The SLABS ECU provides the earth paths for the SLABS commands. The EAT ECU provides the earth path for the 
transfer box in neutral warning.

The BCU activates the audible warning speaker to produce audible warnings.

The audible warning speaker can operate with the ignition off.

The seatbelt warning will commence at key on, and in the event of a serial link failure, will terminate after 6 seconds.

The SLABS warnings are sounded only once for each received command.

The lights on warning and transfer box in neutral are sounded continuously until a sound off command is received.

Sound request number

Sound functions

Priority (1 = lowest, 6 = highest)

0

Off

1

1

Seat belt warning

6

2

Key-in warning

3

3

SLABS/ HDC warning

4

4

Transfer box in neutral warning

5

5

Lights on warning

2

 

 

 

 

 

 

 

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