P2076

Component B40 (Oil sensor (oil level, temperature and quality)): oil temperature implausible

Test 1: Check component B40 (Oil sensor (oil level, temperature and quality)).

1. Check component B40 (Oil sensor (oil level, temperature and quality)).

Test 1.1: Check component B40 (Oil sensor (oil level, temperature and quality)) using actual value.

Test 1.2: Check power supply of component B40 (Oil sensor (oil level, temperature and quality)).

1.1. Check component B40 (Oil sensor (oil level, temperature and quality)) using actual value.
Check component B40 (Oil sensor (oil level, temperature and quality)) using actual value.
Test prerequisite

- Ignition ON
- Engine OFF
Status of the relevant actual values:
- Oil level ( Engine not running ):Warning! Communication with ECU required.
- Oil level ( Engine at idle ):Warning! Communication with ECU required.
- Oil quality:Warning! Communication with ECU required.
- Oil temperature:Warning! Communication with ECU required.
Specified values

- Oil level:The limit values correspond to the min./max. level at the dipstick.
- Oil level(Engine not running):[57... 74] mm
- Oil level(Engine at idle):[30... 54] mm
- Oil quality:[1.0...4.0]
- Oil temperature:Temperature > [ 70° C ] when engine warm
Question

- Are the actual values o.k.?


YES
The actual values are okay.End of test

NO
At least one of the relevant actual values is not okay.Possible cause and remedy

- Check power supply of component B40 (Oil sensor (oil level, temperature and quality)).
- Test wiring to component B40 (Oil sensor (oil level, temperature and quality)).
- Oil temperature
- Oil quality
- Oil level
- B40 (Oil sensor (oil level, temperature and quality))


1.2. Check power supply of component B40 (Oil sensor (oil level, temperature and quality)).
Test prerequisite

- At least one of the relevant actual values is not okay.
- The power supply of component N3/10 (ME-SFI [ME] control unit) is OK.
Test sequence

- Switch off ignition.
- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).
- Measure direct voltage with multimeter between sockets [3.4] 37 and (3.6) 39 of the 126-pole socket box tester.
- Switch on ignition.
Specified value

- Voltage[4.7...5.3] V
Question

- Is the measurement value OK?


YES
The measurement value is OK.Further possible causes of fault

- Test wiring to component B40 (Oil sensor (oil level, temperature and quality)).
- Oil temperature
- Oil quality
- Oil level
- B40 (Oil sensor (oil level, temperature and quality))
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Test wiring to component B40 (Oil sensor (oil level, temperature and quality)).
- N3/10 (ME-SFI [ME] control unit)
End of test