2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)
A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts 0303
The inection ale output stage of cylinder 1 detects a line discontinuity. (P0201)
Possible cause:
- Y62y1 (Fuel inector cylinder 1) - N10/1kI (Circuit 8 relay engine) - N10/1f43 (Fuse 43) - Voltage supply via component /38 (Circuit 8 M1i connector sleeve) Affected functions:
- Engine diagnosis - Engine running
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Test 1: Check power supply of component N3/10 (ME-SFI [ME] control unit).
Test 2: Arrangement of fuses
Test 3: Power supply
Test 4: Check component Y62y1 (Fuel inector cylinder 1).
1. Check poer supply of component N3/10 (ME-SI ME control unit).
Test 1.1: Test voltage supply of circuit 8. ( Check using actual value )
Test 1.2: Test voltage supply of circuit 30.
Test 1.3: Test voltage supply of circuit 8.
Test 1.4: Test current consumption of component N10/1k (Circuit 8 relay engine).
Test 1.5: Test voltage supply of circuit 15.
1.1. Test oltage supply of circuit 87. ( Check using actual alue ) Test prerequisite
- The voltage test at component 1 (Battery) is o.k. - Ignition ON Status of relevant actual value: - Battery voltage:Warning! Communication with ECU required. Specified value
- Battery voltage[11.0 ... 15.0] V Question:Is the actual value o.k.?
YES The actual value is okay.End of test
NO The actual value is not o.k.Possible cause and remedy
- Test voltage supply of circuit 30. - Test voltage supply of circuit 8.
1.2. Test oltage supply of circuit 30. Connect socket bo to component N3/10 (ME-SI ME control unit).
Figure legend
- A -ConnectionTest cable 35-pin socket box - 001 -Sockets of component N3/10 (ME-SFI [ME] control unit) - 05 -35-pin socket box
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 2
- 050 -126-pin socket box - 108 -Test cable 266 589 01 63 00 - N3/10 (ME-SFI [ME] control unit) - II 1-63ConnectionTest cable - III 64-126ConnectionTest cable Warning!
- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050). Continue to test with button F2
Test oltage supply of circuit 30.
Test sequence
- Measure direct voltage with multimeter between sockets [ F.2 ] 98 and [ F.16 ] 112 of the 35-pole socket box tester. - Switch on ignition. Specified value
- Voltage[11.0...15.0] V Question
- Is the measurement value OK?
YES The measurement value is OK.End of test
NO The measurement value is not OK.Possible cause and remedy
- F34f42 (Fuse 42) - Lines End of test
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1.3. Test oltage supply of circuit 87. Connect socket bo to component N3/10 (ME-SI ME control unit).
Figure legend
- A -ConnectionTest cable 35-pin socket box - 001 -Sockets of component N3/10 (ME-SFI [ME] control unit) - 05 -35-pin socket box - 050 -126-pin socket box - 108 -Test cable 266 589 01 63 00 - N3/10 (ME-SFI [ME] control unit) - II 1-63ConnectionTest cable - III 64-126ConnectionTest cable Warning!
- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050). Continue to test with button F2
Test oltage supply of circuit 87.
Test sequence
- Measure direct voltage with multimeter between sockets [ F.2 ] 98 and [F.3] 99 of the 126-pole socket box tester. - Measure direct voltage with multimeter between sockets [ F.4 ] 100 and [ F.5 ] 101 of the 126-pole socket box tester. - Measure direct voltage with multimeter between sockets [ F.6 ] 102 and [ F.5 ] 101 of the 126-pole socket box tester. - Switch on ignition. Specified value
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 4
- Voltage[11.0...15.0] V Question
- Are the measurement values OK?
YES The measurement values are OK.Further possible causes of fault
- Test voltage supply of circuit 30.
NO The measurement values are not OK.Possible cause and remedy
- N10/1f43 (Fuse 43) - N10/1f44 (Fuse 44) - N10/1kI (Circuit 8 relay engine) - Lines - N10/1 (river-side SAM control unit with fuse and relay module) End of test
1.4. Test current consumption of component N10/1k (Circuit 87 relay, engine). Connect socket bo to component N3/10 (ME-SI ME control unit).
Figure legend
- A -ConnectionTest cable 35-pin socket box - 001 -Sockets of component N3/10 (ME-SFI [ME] control unit) - 05 -35-pin socket box - 050 -126-pin socket box - 108 -Test cable 266 589 01 63 00 - N3/10 (ME-SFI [ME] control unit) - II 1-63ConnectionTest cable - III 64-126ConnectionTest cable Warning!
- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050). Continue to test with button F2
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 5
Test current consumption of component N10/1k (Circuit 87 relay, engine).
Test sequence
- Measure direct current with multimeter between sockets [F.4] 100 and [F.2] 123 of the 126-pole socket box tester. - Switch on ignition. Specified value
- Amperage[0.1...0.3] A Question
- Is the measurement value OK?
YES The test was okay.End of test
NO The measurement value is not OK.Possible cause and remedy
- Lines to component N10/1k (Circuit 8 relay engine) - N10/1k (Circuit 8 relay engine) End of test
1.5. Test oltage supply of circuit 15. Connect socket bo to component N3/10 (ME-SI ME control unit).
Figure legend
- A -ConnectionTest cable 35-pin socket box - 001 -Sockets of component N3/10 (ME-SFI [ME] control unit) - 05 -35-pin socket box - 050 -126-pin socket box - 108 -Test cable 266 589 01 63 00 - N3/10 (ME-SFI [ME] control unit) - II 1-63ConnectionTest cable - III 64-126ConnectionTest cable Warning!
- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050). Continue to test with button F2
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 6
Test oltage supply of circuit 15.
Test sequence
- Measure direct voltage with multimeter between sockets [ F.2 ] 98 and [ F.15 ] 111 of the 35-pole socket box tester. - Switch on ignition. Specified value
- Voltage[11.0...15.0] V Question
- Is the measurement value OK?
YES The measurement value is OK.End of test
NO The measurement value is not OK.Possible cause and remedy
- N10/1f52 (Fuse 52) - Lines End of test
2. Arrangement of fuses Figure legend/figure
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 7
- N10/1 (river-side SAM control unit with fuse and relay module) Fuses
- FuseF43-F6 elays
- I N10/1kI (Circuit 8 relay engine) - K N10/1kK (Circuit 8 relay chassis) - L N10/1kL (Starter relay) - M N10/1kM (SEQ [AS] pump control relay) - N N10/1kN (Circuit 15 relay) - O N10/1kO (FAN relay module) - P N10/1kP (Circuit 15 relay) - N10/1k (Air pump or oil cooler fan relay)
3. Poer supply Voltage supply ia component 7/38 (Circuit 87 M1i connector sleee)
Possible cause and remedy
- Check voltage supply according to wiring diagram.
4. Check component Y62y1 (uel inector cylinder 1).
Test 4.1: Check component Y62y1 (Fuel inector cylinder 1).
4.1. Check component Y62y1 (uel inector cylinder 1). Safety note Warning!isk of explosion poisoning and inury!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 anaesthetiing effect.ules 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. First-aid 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 4.1.1: Test actuation of component Y62y1 (Fuel inector cylinder 1).
Test 4.1.2: Test signal voltage of component Y62y1 (Fuel inector cylinder 1).
Test 4.1.3: Check internal resistance of component Y62y1 (Fuel inector cylinder 1).
Test 4.1.4: Inspect component Y62y1 (Fuel inector cylinder 1) for leaks.
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 8
Test 4.1.5: Inspect operation and spray pattern of component Y62y1 (Fuel inector cylinder 1).
4.1.1. Test actuation of component Y62y1 (uel inector cylinder 1). Test prerequisite
- Coolant temperature > 80° C - Engine UNNIN
Warning!Communication ith EC reuired.
4.1.2. Test signal oltage of component Y62y1 (uel inector cylinder 1). Figure legend
- A -ConnectionTest cable 35-pin socket box - 001 -Sockets of component N3/10 (ME-SFI [ME] control unit) - 05 -35-pin socket box - 050 -126-pin socket box - 108 -Test cable 266 589 01 63 00 - N3/10 (ME-SFI [ME] control unit) - II 1-63ConnectionTest cable - III 64-126ConnectionTest cable Warning!
- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050). Continue to test with button F2
Test sequence
- Switch off ignition. - ConnectionMeasuring system - Observe oscilloscope pattern between sockets [M.23] 23 and [F.3] 99 of the 126-pole socket box tester. - un engine. Note
- Measuring system:Communication with ECU required
4.1.3. Check internal resistance of component Y62y1 (uel inector cylinder 1). Figure legend
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 9
- A -ConnectionTest cable 35-pin socket box - 001 -Sockets of component N3/10 (ME-SFI [ME] control unit) - 05 -35-pin socket box - 050 -126-pin socket box - 108 -Test cable 266 589 01 63 00 - N3/10 (ME-SFI [ME] control unit) - II 1-63ConnectionTest cable - III 64-126ConnectionTest cable Warning!
- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050). Continue to test with button F2
Test sequence
- Switch off ignition. - Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit). - Measure resistance with multimeter between sockets [M.23] 23 and [F.3] 99 of the 126-pole socket box tester. Specified value
- esistor[11...1]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 shop-made test cable set to component Y62y1 (Fuel inector cylinder 1). - Measure resistance with multimeter between pins (Y62) 1 and (Y62) 2 Specified value
- esistor[11...13]ohms
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 10
Question
- Is the measurement value OK?
YES The measurement value is OK.Possible cause and remedy
- Lines to component Y62y1 (Fuel inector cylinder 1)
NO The measurement value is not OK.Possible cause and remedy
- Y62y1 (Fuel inector cylinder 1)
4.1.4. Inspect component Y62y1 (uel inector cylinder 1) for leaks. Figure legend
- A -ConnectionTest cable 35-pin socket box - 001 -Sockets of component N3/10 (ME-SFI [ME] control unit) - 05 -35-pin socket box - 050 -126-pin socket box - 108 -Test cable 266 589 01 63 00 - N3/10 (ME-SFI [ME] control unit) - II 1-63ConnectionTest cable - III 64-126ConnectionTest cable Warning!
- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050). Continue to test with button F2
Figure legend
- 055Measuring beakerY62 (Fuel inectors) Test sequence
- Switch off ignition. - emove fuel rail together with component Y62y1 (Fuel inector cylinder 1). - Bridge between sockets (F.4) 100 and (F.1) 113 of the 126-pole socket box tester. - Switch on ignition. Specified value
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 11
- Component Y62y1 (Fuel inector cylinder 1) must not drip. Question
- Was the test o.k.?
YES The test was okay.Further possible causes of fault
- Inspect operation and spray pattern of component Y62y1 (Fuel inector cylinder 1).
NO The test was not okay.Possible cause and remedy
- Y62y1 (Fuel inector cylinder 1)
4.1.5. Inspect operation and spray pattern of component Y62y1 (uel inector cylinder 1). Figure legend
- A -ConnectionTest cable 35-pin socket box - 001 -Sockets of component N3/10 (ME-SFI [ME] control unit) - 05 -35-pin socket box - 050 -126-pin socket box - 108 -Test cable 266 589 01 63 00 - N3/10 (ME-SFI [ME] control unit) - II 1-63ConnectionTest cable - III 64-126ConnectionTest cable Warning!
- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050). Continue to test with button F2
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 12
Figure legend(Shop-made tool)
- 1xClutch 140 545 35 28 - 2xContact spring 004 545 56 26 - 1xed banana connector - 1xBlack banana connector - 22 med cable with diameter 15 mm(Pin 1) - 22 mBrown cable with diameter 15 mm(Pin 2) - 2 mInsulation sheathing with diameter 6 mm
Test sequence
- Switch off ignition. - emove fuel rail together with component Y62y1 (Fuel inector cylinder 1). - Bridge between sockets (F.2) 98 and (F.1) 113 of the 126-pole socket box tester. - Switch on ignition. - Component M3 (Fuel pump) runs. - old component Y62y1 (Fuel inector cylinder 1) in a vessel and briefly operate manually with shop-made test cable set at sockets 98 and 99 of the 126-pin socket box. Specified value
- Fuel inectors should eect fuel uniformly. Question
- Was the test o.k.?
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 13
YES The test was okay. End of test
NO The test was not okay.Possible cause and remedy
- Y62y1 (Fuel inector cylinder 1) End of test
