Gearbox manual/sport mode warning lamps (Instruments)
- Make
- Land Rover
- Model
- Discovery II (UK)
- Section
- Description and operation › Gearbox manual/sport mode warning lamps
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 |
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