Central Warning Lamp

Central warning lamp

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Schematic:

The central warning lamp lights up when a fault occurs in a system relating to the car's safety.

The lamp is supplied with +15 voltage in the main instrument unit and grounded internally in the main instrument when any of the following warning or indicator lamps are lit:
- AIRBAG lamp
- Oil pressure lamp
- Charging lamp
- Brake fluid warning lamp
- Handbrake lamp
- ABS warning lamp

The handbrake lamp lights the central warning lamp if the speed passes 5 km/h from a speed below 5 km/h.

The central warning lamp also lights up when:
- Coolant temperature exceeds 129 Degree C

At the same time as the central warning lamp is lit, the main instrument unit sends bus information to SID to activate an acoustic signal. This does not happen when the ignition is turned on as only the bulbs are being tested; the engine speed must be above 300 rpm for this request.

Diagnostics
The function has no diagnostics.