3023244 - E2031 REAR FOG LAMPS - Description

Description

The vehicle is equipped with a bright rear fog lamp, located in the centre of the left rear light cluster (on the boot).The rear fog lamp is activated via a special button in the centre panel; there is also an LED at the rear of the button which comes on when the light is on.

The switching on of the rear fog lamp is managed by the Body Computer: it is activated in the following conditions:

• go ahead signal with ignition ON (INT);
• signal from the switch in the panel;
• side lights on signal.
• headlamps signal (dipped or main beam) or fog lights on.

If one of the go ahead signals is missing, the button must be pressed again in order to switch the rear fog lamp on.

The correct operation of the light is controlled by the rear fog lamp 'check' function: the following are checked:

• open circuit (bulb missing or wiring broken) which can be diagnosed if there is no command
• short circuit to earth (bulb short circuit or wiring short circuit to earth)
• short circuit to Vbatt (wiring short circuit to Vbatt)
• 21 W bulb replaced with a 5 W bulb

If one of the situations described above is detected, the Body Computer notifies the CAN of the failure state: the special 'lights failure' warning light in the instrument panel comes on and, at the same time, the information is shown on the display.