B2/7 (Right hot film mass air flow sensor) : Loose contact with low frequency (P0104)

B2/7 (Right hot film mass air flow sensor) : Loose contact with low frequency (P0104)
B2/7 (Right hot film mass air flow sensor) : Loose contact with low frequency (P0104)
Possible cause:
­ B2/7 (Right hot film mass air flow sensor)
Affected functions:
­
­
Engine diagnosis
Engine output
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Test 1: Check component B2/7 (Right hot film mass air flow sensor).
1. Check component B2/7 (Right hot film mass air flow sensor).
Test 1.1: Check signal of component via actual value with engine OFF.
Test 1.2: Check signal of component via actual value with engine speed greater than 3000 rpm.
Test 1.3: Check power supply of component.
1.1. Check signal of component via actual value with engine OFF.
Warning!Communication with ECU required.
1.2. Check signal of component via actual value with engine speed greater than 3000 rpm.
Warning!Communication with ECU required.
1.3. Check power supply of component.
Test prerequisite
­ The actual value is not o.k.
Test sequence2010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
­ Switch off ignition.
­ Detach coupling at component .
­ Measure direct voltage with multimeter between sockets (B2/7) 2 and (B2/7) 1
­ Switch on ignition.
Specified value
­ Voltage[11.0...15.0] V
Question
­
Is the measurement value OK?
YES
The actual value is okay.Further possible causes of fault
­ Unmetered air
­ Signal wire
­ B2/7 (Right hot film mass air flow sensor)
End of test
NO
The measurement value is not OK.Possible cause and remedy
­ K40/4f43 (Fuse 43)
­ Cable for voltage supply
End of test