Central Warning Lamp

Central warning lamp

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Schematic:

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

The lamp is powered with +15 from the main instrument unit and is internally grounded by the main instrument unit when any of the following warning or indicator lamps come on:
- Warning lamp, AIRBAG
- Engine oil pressure warning lamp
- Warning lamp, charging
- Warning lamp, brake fluid level
- Warning lamp, handbrake
- 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.

Common to the above lamps is that they are supplied with current (+15 circuit) in the main instrument unit and grounded through the relevant component/system.

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

At the same time as the central warning lamp comes on, the main instrument unit will send bus information to SID to activate an acoustic signal. This will not happen when the ignition is turned on as this will only test the lamps. The engine speed must be higher than 310 rpm for this request.

Diagnostics
The function has no diagnostics.