General description

GENERAL DESCRIPTION

In the SPIDER, opening/closing the hood is facilitated by two electrical actuators: the first one releases the hood at the rear when it is closed; the second one opens the hood cover so that the hood can be folded in or taken out.

For each of these functions a special switch commands one or more relays which in turn operate a pair of release actuators. The switches are located on the rear side panel behind the driver’s seat.

N.B. Both devices can be operated only with the ignition key removed or in the STOP position. The hood cover can only be released after the hood has been released.

All the operating relays, the supply fuse are to be found in the boot.

FUNCTIONAL DESCRIPTION

The electromagnets M26a and M26b which operate the release of the hood are powered with battery voltage via wander fuse G406 (30A); the earth signal is received from the corresponding relay I106, which has the energizing line leading from relay I108 - this is a shunt which sends the power to I106 and the other relays only when it "feels" the signal of the key turned to "MARCIA"; in fact when the key is turned this supply cuts out. The signal that energizes relay I106 leads from switch B99 behind the driver’s seat: the energized relay supplies the two electromagnets M26a and M26b which release the rear fastening of the hood.

The hood cover is only released when the hood has been released previously: this takes place via the timer N80 and the two relays I107a and I107b. The "hood release" control signal energizes timer N80 (pin S) which for appr. 20 minutes sends an earth signal to switch B100 which is active only in this case. This is the only possible way to send a control signal to energize relay I107a which sends an earth signal to the two electromagnets M27a and M27b which release the fastening of the hood cover - the two electromagnets are powered with battery voltage via wander fuse G406 -.

Relay I107a, and I107b, have a common energising line from fuse G406.

Simultaneously another earth signal - I107a has a double contact - is sent, via the other relay I107b, to pin S of timer N80, to cut out timing.

Switch B99 is lit with the key at MARCIA, while switch B100 only lights up when it can be pressed.