Absolute Pressure Sensors - Ducati Diavel Workshop Manual

Introduction to the engine control system
Possible correlated faults: inadequate engine power, irregular idle speed (target idle speed is 1350 rpm with engine
stabilised at operating temperature), the engine does not start easily, radiator fans not activated correctly or not activated
at all, causing the coolant to reach boiling point.
Check:
- Sensor resistance, which must be approximately 10 kOhm at 25°C and approximately 1270 Ohm at 90°C
The engine temperature value may be checked using the DDS. Check that the value given is plausible.
If none of the aforementioned tests identify the problem and the engine temperature sensor is in proper working order,
replace the engine control unit.
Component replacement methods
No special measures are necessary in order to replace the engine temperature sensor. After replacement of the engine
temperature sensor, reset the self-adaptive parameters relative to carburation with the DDS.

Absolute pressure sensors

Introduction
The engine control system of the Diavel is equipped with two absolute pressure sensors, with one connected to the intake
duct of each cylinder (MAP 1 cylinder 1 – horizontal - MAP 2 cylinder 2 – vertical). They are used by the control unit to
determine the quantity of fuel to be injected according to the speed-density strategy and to determine the atmospheric
pressure (necessary information to correct the carburation in accordance with the altimetric measurement).
Components assembling position
The absolute pressure sensors of the vertical (1) and horizontal (2) cylinders are fixed near the airbox (the image shows
also the position of the sensor connection).
Wiring diagram