3315545 - E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS - Functional description

Functional description

The direction indicators and hazard warning lights are controlled by an electronic intermittence device R2 located in junction unit B1 . The supply for the device reaches pin 6 directly from the battery (MAXIFUSE CENTR of B5 ) via fuse F8 of junction unit B1 ; Pin 2 is earthed.

TURN SIGNALS:

• The turn signals are activated by stalk unit H5 .
• The latter, on pin 4 - connector B, receives an ignition-controlled supply (INT/A) via fuse F1 of the junction unit B1 ; by operating the lever in both directions a signal is sent to pin 7 (left side arrows) and pin 1 (right side arrows) of device R2 of B1 .

Intermittent device R2 of B1 generates two signals that supply the turn signals: the right hand signal from pin 5 ( F11 , F21 , F31 ); the left hand signal from pin 4 ( F10 , F20 , F30 ). When a trailer is connected, a signal is sent from pin 8 to a special warning light located in the instrument panel E50 . The tail-lights in clusters F30 and F31 are not conventional bulbs but electronic leds. A special direction indicator control unit M83 is therefore fitted. This monitors tail-light activation signals to detect anomalies and controls the various warning lights. The supply for device M83 reaches pin 6 directly from the battery (MAXIFUSE CENTR of B5 ) via fuse F8 of junction unit B1 ; pin 3 is earthed. Pins 10 and 7 receive signals from pins 4 and 5 of device R2 of B1 for right and left hand side operation. The device M83 is connected to the turn signals: located in clusters F30 and F31 with two feedbacksignals from pins 2 and 1. The warning lights for the direction indicators, located inside the instrument panel E50 , are also operated by pins 11 and 17.

HAZARD WARNING LIGHTS:

• Hazard warning light operation is controlled by a switch located in unit H35 , which, when pressed, sends the earth signal to pin 3 of device R2 of B1 .
• Pin 2 of H35 is operated when the ignition is turned on (INT/A) via fuse F5 of B1 to light up the control unit H35 .
• When pin 3 of device R2 of B1 is earthed, the latter supplies all the turn signals simultaneously through pins 4 and 5.
• Pin 4 of the turn signals unit M83 supplies the hazard warning light switch on H35 with greater light intensity.
• All the hazard warning lights are also operated by the alarm system control unit M30 (pins 1 and 2 of connector B) that is connected directly to the lighting power supply ( See E7015 ALARM )