P0203
The injection valve output stage of cylinder 3 detects a line discontinuity. (P0203)
Possible cause:
Z7/35 (Circuit 87 M1e connector sleeve)
Y62y3 (Fuel injector cylinder 3)
K40/4f43 (Fuse 43)
K40/4kK (Engine electronics and chassis relay)
Affected functions:
Engine diagnosis
Engine running
10.52SS
Page 4322010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
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Page 433
Test 1: Arrangement of fuses
Test 2: Check component Y62y3 (Fuel injector cylinder 3).
Test 3: Power supply
1. Arrangement of fuses
End of test
2. Check component Y62y3 (Fuel injector cylinder 3).
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.
Test 2.1: Test actuation of component Y62y3 (Fuel injector cylinder 3).
Test 2.2: Test signal voltage of component Y62y3 (Fuel injector cylinder 3).
Test 2.3: Check internal resistance of component Y62y3 (Fuel injector cylinder 3).
Test 2.4: Inspect component Y62y3 (Fuel injector cylinder 3) for leaks.
Test 2.5: Inspect operation and spray pattern of component Y62y3 (Fuel injector cylinder 3).
2.1. Test actuation of component Y62y3 (Fuel injector cylinder 3).
Test prerequisite
Coolant temperature > 80? C
Engine RUNNING
Warning!Communication with ECU required.
2.2. Test signal voltage of component Y62y3 (Fuel injector cylinder 3).
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!2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Connection A of test cable 108 may NOT be connected to connection B of the 126pin socket box (050).
Test sequence
Note
Switch off ignition.
ConnectionMeasuring system
Observe oscilloscope pattern between sockets [M.26] 26 and [F.3] 99 of the 126pole socket box tester.
Run engine.
Measuring system:Communication with ECU required
2.3. Check internal resistance of component Y62y3 (Fuel injector cylinder 3).
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 4342010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 435
Test sequence
Switch off ignition.
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Measure resistance with multimeter between sockets [M.26] 26 and [F.3] 99 of the 126pole socket box tester.
Specified value
Resistor[11...17]ohms
Question
Is the measurement value OK?
YES
The measurement value is OK.Note
In the event of stored faults with a high fault frequency count or in the event of customer complaints, check lines and connectors
for loose contact and corrosion..
NO
The measurement value is not OK.Test sequence
Switch off ignition.
Connect shopmade test cable set to component Y62y3 (Fuel injector cylinder 3).
Measure resistance with multimeter between pins (Y62) 1 and (Y62) 2
Specified value
Resistor[11...13]ohms
Question
Is the measurement value OK?
YES
The measurement value is OK.Possible cause and remedy
Lines to component Y62y3 (Fuel injector cylinder 3)2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
NO
The measurement value is not OK.Possible cause and remedy
Y62y3 (Fuel injector cylinder 3)
2.4. Inspect component Y62y3 (Fuel injector cylinder 3) for leaks.
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).
Figure legend
055Measuring beakerY62 (Fuel injectors)
Test sequence
Switch off ignition.
Remove fuel rail together with component Y62 (Fuel injectors).
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Bridge between sockets (F.4) 100 and (F.17) 113 of the 126pole socket box tester.
Switch on ignition.
Specified value
Component Y62y3 (Fuel injector cylinder 3) must not drip.
Question
Page 4362010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Was the test o.k.?
YES
The test was okay.Further possible causes of fault
Inspect operation and spray pattern of component Y62y3 (Fuel injector cylinder 3).
NO
The test was not okay.Possible cause and remedy
Y62y3 (Fuel injector cylinder 3)
2.5. Inspect operation and spray pattern of component Y62y3 (Fuel injector cylinder 3).
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 4372010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 438
Figure legend(Shopmade tool)
1xClutch 140 545 35 28
2xContact spring 004 545 56 26
1xRed banana connector
1xBlack banana connector
2,2 mRed cable with diameter 1,5 mm(Pin 1)
2,2 mBrown cable with diameter 1,5 mm(Pin 2)
2 mInsulation sheathing with diameter 6 mm
Test sequence
Switch off ignition.
Remove fuel rail together with component Y62 (Fuel injectors).
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Insert bridge.
Bridge between sockets (F.2) 98 and (F.17) 113 of the 126pole socket box tester.
Switch on ignition.
Component M3 (Fuel pump) runs.
Hold component Y62y3 (Fuel injector cylinder 3) in a vessel and briefly operate manually with shopmade test cable set at sockets2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
98 and 99 of the 126pin socket box.
Specified value
Fuel injectors should eject fuel uniformly.
Question
Was the test o.k.?
YES
The test was okay. End of test
NO
The test was not okay.Possible cause and remedy
Y62y3 (Fuel injector cylinder 3)
End of test
3. Power supply
Voltage supply via component Z7/35 (Circuit 87 M1e connector sleeve)
Possible cause and remedy
Check voltage supply according to wiring diagram.
The injection valve output stage of cylinder 3 detects a line discontinuity. (P0203)
Possible cause:
Z7/35 (Circuit 87 M1e connector sleeve)
Y62y3 (Fuel injector cylinder 3)
K40/4f43 (Fuse 43)
K40/4kK (Engine electronics and chassis relay)
Affected functions:
Engine diagnosis
Engine running
10.52SS
Page 4322010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 433
Test 1: Arrangement of fuses
Test 2: Check component Y62y3 (Fuel injector cylinder 3).
Test 3: Power supply
1. Arrangement of fuses
End of test
2. Check component Y62y3 (Fuel injector cylinder 3).
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.
Test 2.1: Test actuation of component Y62y3 (Fuel injector cylinder 3).
Test 2.2: Test signal voltage of component Y62y3 (Fuel injector cylinder 3).
Test 2.3: Check internal resistance of component Y62y3 (Fuel injector cylinder 3).
Test 2.4: Inspect component Y62y3 (Fuel injector cylinder 3) for leaks.
Test 2.5: Inspect operation and spray pattern of component Y62y3 (Fuel injector cylinder 3).
2.1. Test actuation of component Y62y3 (Fuel injector cylinder 3).
Test prerequisite
Coolant temperature > 80? C
Engine RUNNING
Warning!Communication with ECU required.
2.2. Test signal voltage of component Y62y3 (Fuel injector cylinder 3).
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!2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Connection A of test cable 108 may NOT be connected to connection B of the 126pin socket box (050).
Test sequence
Note
Switch off ignition.
ConnectionMeasuring system
Observe oscilloscope pattern between sockets [M.26] 26 and [F.3] 99 of the 126pole socket box tester.
Run engine.
Measuring system:Communication with ECU required
2.3. Check internal resistance of component Y62y3 (Fuel injector cylinder 3).
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 4342010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 435
Test sequence
Switch off ignition.
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Measure resistance with multimeter between sockets [M.26] 26 and [F.3] 99 of the 126pole socket box tester.
Specified value
Resistor[11...17]ohms
Question
Is the measurement value OK?
YES
The measurement value is OK.Note
In the event of stored faults with a high fault frequency count or in the event of customer complaints, check lines and connectors
for loose contact and corrosion..
NO
The measurement value is not OK.Test sequence
Switch off ignition.
Connect shopmade test cable set to component Y62y3 (Fuel injector cylinder 3).
Measure resistance with multimeter between pins (Y62) 1 and (Y62) 2
Specified value
Resistor[11...13]ohms
Question
Is the measurement value OK?
YES
The measurement value is OK.Possible cause and remedy
Lines to component Y62y3 (Fuel injector cylinder 3)2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
NO
The measurement value is not OK.Possible cause and remedy
Y62y3 (Fuel injector cylinder 3)
2.4. Inspect component Y62y3 (Fuel injector cylinder 3) for leaks.
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).
Figure legend
055Measuring beakerY62 (Fuel injectors)
Test sequence
Switch off ignition.
Remove fuel rail together with component Y62 (Fuel injectors).
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Bridge between sockets (F.4) 100 and (F.17) 113 of the 126pole socket box tester.
Switch on ignition.
Specified value
Component Y62y3 (Fuel injector cylinder 3) must not drip.
Question
Page 4362010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Was the test o.k.?
YES
The test was okay.Further possible causes of fault
Inspect operation and spray pattern of component Y62y3 (Fuel injector cylinder 3).
NO
The test was not okay.Possible cause and remedy
Y62y3 (Fuel injector cylinder 3)
2.5. Inspect operation and spray pattern of component Y62y3 (Fuel injector cylinder 3).
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 4372010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 438
Figure legend(Shopmade tool)
1xClutch 140 545 35 28
2xContact spring 004 545 56 26
1xRed banana connector
1xBlack banana connector
2,2 mRed cable with diameter 1,5 mm(Pin 1)
2,2 mBrown cable with diameter 1,5 mm(Pin 2)
2 mInsulation sheathing with diameter 6 mm
Test sequence
Switch off ignition.
Remove fuel rail together with component Y62 (Fuel injectors).
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Insert bridge.
Bridge between sockets (F.2) 98 and (F.17) 113 of the 126pole socket box tester.
Switch on ignition.
Component M3 (Fuel pump) runs.
Hold component Y62y3 (Fuel injector cylinder 3) in a vessel and briefly operate manually with shopmade test cable set at sockets2010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
98 and 99 of the 126pin socket box.
Specified value
Fuel injectors should eject fuel uniformly.
Question
Was the test o.k.?
YES
The test was okay. End of test
NO
The test was not okay.Possible cause and remedy
Y62y3 (Fuel injector cylinder 3)
End of test
3. Power supply
Voltage supply via component Z7/35 (Circuit 87 M1e connector sleeve)
Possible cause and remedy
Check voltage supply according to wiring diagram.
