Procedures

AH83.70-N-0002-01B Preconditions/Notes Regarding Checking The Delivery Rate Of The Fuel Metering Pump

- with code H11 Warm air auxiliary heater

Preconditions for the exact determination of fuel delivery quantity are
- leaktight fuel lines and connections
and
- a sufficiently charged battery.

During the measurement, a voltage of
- 11 V to 13 V must be connected to the auxiliary heater control unit,
and
- the temperature in the fuel system must be below 20 °C.