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(P0385) Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)

********************************************************************P0385
Engine speed signal is implausible. (P0385)
Possible cause:2010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 100
­ B70 (Crankshaft Hall sensor)
­ Smooth engine running
­ N3/10 (ME­SFI [ME] control unit)
Affected functions:
­
Engine diagnosis
­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­
Test 1: Test control unit.
Test 2: Check smooth engine running.
Test 3: Check component B70 (Crankshaft Hall sensor).
1. Test control unit.
Test control unit.
Possible cause and remedy
­
­
Erase fault memory and start engine.
Reread fault memory of control unit N3/10 (ME­SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME­SFI [ME]
control unit).
Read coding and transfer to the new control unit.End of test
2. Check smooth engine running.
Test 2.1: Check self­adaptation of mixture formation. ( Check by means of actual values )
Test 2.2: Check water and diesel content in gasoline fuel. (Fuel quality)
Test 2.3: Test fuel pressure and delivery of component M3 (Fuel pump).
2.1. Check self­adaptation of mixture formation. ( Check by means of actual values )
Warning!Communication with ECU required.
2.2. Check water and diesel content in gasoline fuel. (Fuel quality)
Safety note
Warning!Risk of explosion, poisoning and injury!Fuels are highly inflammable and toxic if inhaled. Fuels may cause skin damage. fuel
vapors are explosive, invisible and spread out at floor level, they are toxic if inhaled and produce giddiness and an anaesthetizing
effect.Rules of conduct and protective measures
­ Wear suitable protective clothing.
­ Pay attention to national safety precautions and regulations.
­ No fire, sparks, naked flames and smoking.
­ Ensure the work place is adequately ventilated.
­ Never drain or pour in fuels over assembly pits.
­ Store drained fuel in a suitable and sealed vessel.
­ Immediately eliminate any fuel which has flowed out.
First­aid measures
­
­
­
Clean moistened skin with water and soap.
Change moistened clothing as quickly as possible.
If fuel gets into your eyes, rinse out your eyes immediately with water and contact a doctor if necessary.
Check water and diesel content in gasoline fuel. (Fuel quality)
Figure legend
­ 55Measuring beaker(Min.:1 Liters)
­ 69Pressure hose(119 589 04 63 00)
Test sequence2010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
­ Switch off ignition.
­ Connect test pressure gauge.
­ Hold the open fuel line in measuring beaker (55).
­ Switch on ignition.
­ Actuate component M3 (Fuel pump).
­ Drain off about 0.3 l fuel.(Press key F4 in order to end actuation.)
Call up 'Actuation' with key F2 .
Warning!Communication with ECU required.
2.3. Test fuel pressure and delivery of component M3 (Fuel pump).
2.3. No further information available.
3. Check component B70 (Crankshaft Hall sensor).
Test 3.1: Test signal voltage of component B70 (Crankshaft Hall sensor).
Test 3.2: Check power supply of component B70 (Crankshaft Hall sensor).
3.1. Test signal voltage of component B70 (Crankshaft Hall sensor).
Test 3.1.1: The engine does not start.
Test 3.1.2: Engine running
3.1.1. The engine does not start.
10.52SS
Page 1012010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Figure legend
­ A ­ConnectionTest cable 35­pin socket box
­ 001 ­Sockets of component N3/10 (ME­SFI [ME] control unit)
­ 05 ­35­pin socket box
­ 050 ­126­pin socket box
­ 108 ­Test cable 266 589 01 63 00
­ N3/10 (ME­SFI [ME] control unit)
­ II 1­63ConnectionTest cable
­ III 64­126ConnectionTest cable
Warning!
­
­
Connection A of test cable 108 may NOT be connected to connection B of the 126­pin socket box (050).
Settings
­ Trigger level: 50 %
­ Time range: 5 ms
Test sequence
­ Switch off ignition.
­ Connect socket box (126­pin) to component N3/10 (ME­SFI [ME] control unit).
­ Observe oscilloscope pattern between sockets (M.80) 80(A7) and (M.81) 81(A4) of the 126­pole socket box tester.
­ Start engine.
Specified value
­ Measuring system
Warning!The rising signal edge in the gap (see arrow) may vary.Note
­
Measuring system:Communication with ECU required
Page 1022010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
3.1.2. Engine running
Figure legend
­ A ­ConnectionTest cable 35­pin socket box
­ 001 ­Sockets of component N3/10 (ME­SFI [ME] control unit)
­ 05 ­35­pin socket box
­ 050 ­126­pin socket box
­ 108 ­Test cable 266 589 01 63 00
­ N3/10 (ME­SFI [ME] control unit)
­ II 1­63ConnectionTest cable
­ III 64­126ConnectionTest cable
Warning!
­
­
Connection A of test cable 108 may NOT be connected to connection B of the 126­pin socket box (050).
Page 1032010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Settings
­ Trigger level: 50 %
­ Time range: 5 ms
Test sequence
­ Switch off ignition.
­ Connect socket box (126­pin) to component N3/10 (ME­SFI [ME] control unit).
­ Observe oscilloscope pattern between sockets (M.80) 80(A7) and (M.81) 81(A4) of the 126­pole socket box tester.
­ Operate engine at idling speed.
Specified value
­ Measuring system
­ Signal (4,7 ­ 5,3) V
Warning!The rising signal edge in the gap (see arrow) may vary.Note
­
Measuring system:Communication with ECU required
Page 1042010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
3.2. Check power supply of component B70 (Crankshaft Hall sensor).
Figure legend
­ A ­ConnectionTest cable 35­pin socket box
­ 001 ­Sockets of component N3/10 (ME­SFI [ME] control unit)
­ 05 ­35­pin socket box
­ 050 ­126­pin socket box
­ 108 ­Test cable 266 589 01 63 00
­ N3/10 (ME­SFI [ME] control unit)
­ II 1­63ConnectionTest cable
­ III 64­126ConnectionTest cable
Warning!
­
­
Connection A of test cable 108 may NOT be connected to connection B of the 126­pin socket box (050).
Page 1052010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Test sequence
­ Switch off ignition.
­ Connect 126­pole socket box between engine wiring harness and control module N3/10 (ME­SFI [ME] control unit).
­ Measure direct voltage with multimeter between sockets (M.80) 80 and (M.44) 44 of the 126­pole socket box tester.
­ Switch on ignition.
Specified value
­ Voltage[4.8...5.3] V
Question
­
Is the measurement value OK?
YES
The measurement value is OK.Possible cause and remedy
­ Signal wire
­ Test cables to component B70 (Crankshaft Hall sensor) for open circuit.
­ B70 (Crankshaft Hall sensor)
End of test
NO
The measurement value is not OK.Possible cause and remedy
­ Check lines to component B70 (Crankshaft Hall sensor) for short circuit.
­ N3/10 (ME­SFI [ME] control unit)
End of test

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Location: Co Rd 206, Orland, CA 95963, USA

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