P0520

B40/2 (Cylinder Shut-Off Oil Pressure Sensor)

Check Component B40/2 (Cylinder Shut-off Oil Pressure Sensor) (only CSO)

Test 1 Test Signal Voltage of Component B40/2 (Cylinder Shut-off Oil Pressure Sensor)
Test 2 Test Voltage Supply of Component B40/2 (Cylinder Shut-off Oil Pressure Sensor)


1 Test Signal Voltage of Component B40/2 (Cylinder Shut-off Oil Pressure Sensor)

Test requirement
- The relevant actual value is not okay.

Test sequence
- Switch off ignition.
- Connect socket box to component N3/10 (ME-SFI control module).
- (E.20) 76 <--> 77 (E.21)
- Run engine.

Status of relevant actual value:
- Engine speed: Note! Communication with ECU required

Specified value
- Engine at idle speed: Voltage [2.2...3.0] V
- Engine speed 3000 1/min : Voltage [4.0...5.0] V

Question
- Are the measured values okay?
Yes
The measured value is o.k.
Further possible causes of fault
- N3/10 (ME-SFI control module)
No
The measured values are not o.k.
Possible cause and remedy
- Test voltage supply of component B40/2 (Cylinder shut-off oil pressure sensor).
- Test wiring to component B40/2 (Cylinder shut-off oil pressure sensor).
- N3/10 (ME-SFI control module)

** End of Test **


2 Test Voltage Supply of Component B40/2 (Cylinder Shut-off Oil Pressure Sensor)

Test requirement
- The relevant actual value is not okay.

Test sequence
- Switch off ignition.
- Connect socket box to component N3/10 (ME-SFI control module).
- (E.20) 76 <--> 75 (E.19)
- Switch on ignition.

Specified value
- Voltage [4.7...5.2] V

Question
- Is the measured value okay?
Yes
The measured value is o.k.
Further possible causes of fault
- Test wiring to component B40/2 (Cylinder shut-off oil pressure sensor).
- Oil pressure
- B40/2 (Cylinder shut-off oil pressure sensor)
No
The measured value is not o.k.
Possible cause and remedy
- Test wiring to component B40/2 (Cylinder shut-off oil pressure sensor).
- N3/10 (ME-SFI control module)

** End of Test **