Porsche 928 Workshop Manual page 462

25
Fuel System
928
RESETTING ELAPSED MILEAGE SWITCH
An elapsed mileage switch is mounted to the right
of the passenger's seat m monitor the time of
operation. It will turn on an indicator lamp for rhe
oxygen sensor after the car has been driven 30.000
miles. The elapsed mileage switch must be reset to
zero each time the oxygen sensor is replaced.
1. Loosen knurled head screw and remove cover for
elapsed mileage switch.
2. Push in reset butron on elapsed mileage switch
against stop wirh a suitable tool. The elapsed
mileage switch will rerun? to zero and the
oxygen sensor indicator light will again operate
normally.
REMO",NG AND INSTALLING CON
TROL UNIT FOR AFC FUEL INIEC-
TlON AND OXYGEN SENSOR
This control unit is mounted on right wheel
housing in passenger's foorwell.
Removing
1. Push up plug clip IO unlock the plug.
2. Loosen three mounting SCI~WS and remove
control unit.
ynstalling
Make cure plug fits properly and can be felt to
engage.
25 - 26 Resetting Elapsed Mileage Switch
Removing and installing
Conirol I'nir for AFC Fuel Injection
2nd "x"een S~nwr
Printed in Germany