Ducati Diavel
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Ducati Diavel Service Manual: Engine temperature sensor

Introduction

The engine control system on the diavel uses a sensor that measures the temperature of the coolant (engine temperature). This sensor has a resistance of ntc type (negative temperature coefficient), that reduces its own value when the temperature increases. The engine temperature sensor, allows the control unit to manage correctly the cold starting and the heating phases.

Components assembling position

Engine temperature sensor


The engine temperature sensor is mounted on the left hand side of the vertical cylinder.

Location of engine temperature sensor connector.

Wiring diagram

Engine temperature sensor


Ccm engine control connection, s engine temperature sensor. 1 Green/white - g/w, 2 black/purple - bk/v.

In the event of fault

In the event of an engine temperature sensor fault, the engine control unit implements a recovery value of 70C and activates the radiator fans.

Fault codes generated and possible correlated faults

Fault codes generated by the engine control unit and displayed by the dds (engine temperature sensor diagnosis):

Note

Check integrity of electric circuit - short-circuit to vdc = with dashboard on, using a voltmeter, a voltage is measured between the wire tested and ground.

Check integrity of electric circuit - short-circuit to ground = with the battery cables disconnected, using an ohmmeter, continuity is detected between the wire tested and ground.

Check integrity of electric circuit - open circuit = with the battery cables disconnected, using an ohmmeter, no continuity is detected between the two ends of the wire tested.

The tank dashboard shows the error "engine temperature" and the eobd warning light activates.

When the dashboard receives the "engine temperature" error, flashing dashes are displayed instead of the temperature reading. If the dashboard does not receive engine temperature information from the can line, the error "engine temperature" is not shown on the display, but flashing dashes are still displayed instead of the temperature reading.

Fault codes generated and possible correlated faults


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:

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.

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Other materials:

Disassembly of gear interlock plunger and pawl assembly
Unscrew the interlock plunger screw (5) and remove the seal (6), spring (7) and the detent ball (8). Unscrew the clutch-side crankcase half screw (3) and remove the pawl (4), washer (2) and spring (1). ...

Reassembly of the timing pulleys
Fit the pulley (11) on the flange (24), aligning the timing mark (d) on the pulley with the timing mark on the (e) on the flange. Install the washer (23) up against the pulley, aligning the timing notch (f) with the timing marks on the pulley and the flange. Insert the three screws (22) ...

Reporting of safety defects
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the national highway traffic safety administration (nhtsa) in addition to notifying ducati north america. If nhtsa receives similar complaints, it may open an in ...

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