Calibrating The Tank Sensor System For Model 89 Onwards - Porsche 928 Workshop Manual

928
Fuel Supply
20
Calibrating the tank sensor system
for Model 89 onwards
The system must be calibrated if the fuel
tanks, tank sensor or backlit instrument
cluster have been replaced.
1. Empty the fuel tank.
2. Fill with exactly 15 I (3.96 gallons) fuel.
3. Wait for at least 1 minute. Vehicle must
remain stationary.
Note
Terminate calibration mode by switching off
the ignition or starting the engine.
4. Pull the operating lever for the backlit instru-
ment cluster, turning the ignition on at the
same time. The following response appears
in the left and right display boxes*
5. Press the reset button in the center console
until 15 appears in the center display box.
The tank sensor system is now calibrated.
*TANK EICHEN = CALIBRATE TANK
l
Calibrating the tank sensor system for Model 89 onwards
Printed in Germany - x*11, 1989
20- 19