63
12/04
SPIDER MAX 500
F. 21
B
- Install the testing wiring across the central unit and the system.
- Check that the orange/red cable is insulated from the ground across the PIN 87 (red
relay) and the PIN 23 (central unit) = insulation (>1 M
Ω
Ω
Ω
Ω
Ω
).
Orange/red cable in short circuit.
Restore the cable insulation and
replace the 10 A fuse no. 6.
Check for the H.T. coil and the injector (see the coil and
injector sections) insulation from ground.
Disconnect the fuel pump con-
nectors, the H.T. coil and the injector.
Disconnect the fuel pump connector.
A - Check for the red relay operation = 100 ± 50
Ω
Ω
Ω
Ω
Ω
(F. 19 - P. 62).
B - Check the continuity of the orange/red cable, across the red relay PIN 87 and
the fuel pump PIN 5.
A - Not within the indicated values: replace the
red relay.
B - Repair the interruption of the orange/red
cable and repeat the verification from the
beginning.
F. 22
87
87
5
