Electrical/Electronic/Components; Electronic Control Unit; Accelerator Throttle Switch - Alfa Romeo 33 Workshop Manual

ELECTRONIC
1. Make sure that lambda probe is effi-
bleshooting Procedure - Test No. 8).
2. Start the engine, run it to normal
running temperature and keep it at
analyzer at exhaust pipe outlet and de-
da probe connected).
4. Disconnect depression pipe from
pressure regulator .and meanwhile
If CO percentage rises momentari-
values, this means that CU works
properly (When it is informed that
mixture is too rich it Will reduce in-
jection time).
ses at high values, this means that
wing check effected and Step 1).
If necessary, remove CU from air flow
1. !Disconnect multipolar connecter
FUEL SYSTEM
For electronic injection 1.7 engines' only
2. Unscrew four fixing screws shown
in figure (one of which is under seal
2 Multipolar connecter
3. Remove CU 0 with seal gasket
2 Gasket
3 Air flow sensor
4. Remount CU operating in reverse or-
der 'in respect to removal, then apply a
new seal cap (in screw Seat). If CU has
cen'tage at exhaust (see: Calibration
and Setting).
ACCELERATOR
THROTTLE SWITCH
1. Disconnect connecter 0.
2. Unscrew two fixing screws and re-
move switch
1 Connecter
2 Throttle body

3 Accelerator Throttle switch

3. Fedmount switch operating in rever-
se order in respect to removal; then ef-
fect switch .setting (see: Calibration
and Setting).
October 1988