Mercedes Benz Truck G 550 Diagnostic Trouble Codes ,0496

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0496
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 513
The knock control has a malfunction. (P0324)
Possible cause:
- Test control unit.
Affected functions:
- Engine running
-------------------------------------------------
Test 1: Test control unit.
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 (ME-SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME-SFI [ME] control
unit).
Read coding and transfer to the new control unit.End of test

Mercedes Benz Truck G 550 Diagnostic Trouble Codes ,0509

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0509
G3/6 (Right O2 sensor, after TWC [KAT]) : Aging (P2270)
Possible cause:
- G3/6 (Right O2 sensor, after TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/6 (Right O2 sensor, after TWC [KAT]).
1. Check component G3/6 (Right O2 sensor, after TWC [KAT]).
Warning!Communication with ECU required.
0510
G3/6 (Right O2 sensor, after TWC [KAT]) : Aging (P2271)
Possible cause:
- G3/6 (Right O2 sensor, after TWC [KAT])
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 518
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/6 (Right O2 sensor, after TWC [KAT]).
1. Check component G3/6 (Right O2 sensor, after TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes ,0513

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0513
G3/5 (Left O2 sensor, after TWC [KAT]) : Aging (P2272)
Possible cause:
- G3/5 (Left O2 sensor, after TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/5 (Left O2 sensor, after TWC [KAT]).
1. Check component G3/5 (Left O2 sensor, after TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0440

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0440
Heating of component G3/3 (Left O2 sensor, before TWC [KAT]) : Heating capacity is too low. (P0155)
Possible cause:
- G3/3 (Left O2 sensor, before TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/3 (Left O2 sensor, before TWC [KAT]).
1. Check component G3/3 (Left O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.
0441
Heating of component G3/4 (Right O2 sensor, before TWC [KAT]) : Short circuit to positive (P0032)
Possible cause:
- G3/4 (Right O2 sensor, before TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/4 (Right O2 sensor, before TWC [KAT]).
1. Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 496

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0439

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0439
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 495
The electronic analysis system for the O2 sensor in the engine control unit is defective. (P0607)
Possible cause:
- Test control unit.
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Test control unit.
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 (ME-SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME-SFI [ME] control
unit).
Read coding and transfer to the new control unit.End of test

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0435

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0435
The electronic analysis system for the O2 sensor in the engine control unit is defective. (P0607)
Possible cause:
- Test control unit.
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Test control unit.
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 (ME-SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME-SFI [ME] control
unit).
Read coding and transfer to the new control unit.End of test

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0449

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0449
The electronic analysis system for the O2 sensor in the engine control unit is defective. (P064D)
Possible cause:
- Test control unit.
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Test control unit.
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 (ME-SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME-SFI [ME] control
unit).
Read coding and transfer to the new control unit.End of test

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0433

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0433
Heating of component G3/4 (Right O2 sensor, before TWC [KAT]) : Short circuit to positive / Resistance of sensor heater too low (P0135)
Possible cause:
- G3/4 (Right O2 sensor, before TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Test 2: Check component G3/4 (Right O2 sensor, before TWC [KAT]).
1. Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.
2. Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0445

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0445
Heating of component G3/3 (Left O2 sensor, before TWC [KAT]) : Short circuit to positive (P0052)
Possible cause:
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 497
- G3/3 (Left O2 sensor, before TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/3 (Left O2 sensor, before TWC [KAT]).
1. Check component G3/3 (Left O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0436

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0436
Heating of component G3/4 (Right O2 sensor, before TWC [KAT]) : Heating capacity is too low. (P0135)
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 494
Possible cause:
- G3/4 (Right O2 sensor, before TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Test 2: Check component G3/4 (Right O2 sensor, before TWC [KAT]).
1. Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.
2. Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes ,0508

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts
0508
Component A16/2 (knock sensor 2, left) has an electrical fault. (P0330)
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 517
Possible cause:
- A16/2 (knock sensor 2, left)
Affected functions:
- Engine running
-------------------------------------------------
Test 1: Check component A16/2 (knock sensor 2, left).
1. Check component A16/2 (knock sensor 2, left).
Test prerequisite
- Engine running
Test sequence
- Briefly blip throttle.
Status of relevant actual value:
- Coolant temperature:Warning! Communication with ECU required.
- Knock control enable:Warning!
Specified value
- Knock control enable:YES
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
- Lines to component A16/2 (knock sensor 2, left)
- Component A16/2 (knock sensor 2, left)
End of test

Mercedes Benz Truck G 550 Diagnostic Trouble Codes ,0504

0504
Component A16/1 (knock sensor 1, right) has an electrical fault. (P0325)
Possible cause:
- A16/1 (knock sensor 1, right)
Affected functions:
- Engine running
-------------------------------------------------
Test 1: Check component A16/1 (knock sensor 1, right).
1. Check component A16/1 (knock sensor 1, right).
Test prerequisite
- Engine running
Test sequence
- Briefly blip throttle.
Status of relevant actual value:
- Coolant temperature:Warning! Communication with ECU required.
- Knock control enable:Warning!
Specified value
- Knock control enable:YES
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
- Lines to component A16/1 (knock sensor 1, right)
- Component A16/1 (knock sensor 1, right)
End of testMercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0442

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0442
Heating of component G3/4 (Right O2 sensor, before TWC [KAT]) : Short circuit to ground (P0031)
Possible cause:
- G3/4 (Right O2 sensor, before TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/4 (Right O2 sensor, before TWC [KAT]).
1. Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes ,0500

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0500
The knock control has a malfunction. (P0324)
Possible cause:
- Test control unit.
Affected functions:
- Engine running
-------------------------------------------------
Test 1: Test control unit.
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 (ME-SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME-SFI [ME] control
unit).
Read coding and transfer to the new control unit.End of test

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0427

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts






0427
Heating of component G3/6 (Right O2 sensor, after TWC [KAT]) : Open circuit (P0036)
Possible cause:
- G3/6 (Right O2 sensor, after TWC [KAT])
- N10/1kI (Circuit 87 relay, engine)
- N10/1f57 (Fuse 57)
- Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
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 G3/6 (Right O2 sensor, after TWC [KAT]).
1. Check power supply of component N3/10 (ME-SFI [ME] control unit).
Test 1.1: Test voltage supply of circuit 87. ( Check using actual value )
Test 1.2: Test voltage supply of circuit 30.
Test 1.3: Test voltage supply of circuit 87.
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 480
Test 1.4: Test current consumption of component N10/1kR (Circuit 87 relay, engine).
Test 1.5: Test voltage supply of circuit 15.
1.1. Test voltage supply of circuit 87. ( Check using actual value )
Test prerequisite
- The voltage test at component G1 (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 87.
1.2. Test voltage supply of circuit 30.
Connect socket box to component N3/10 (ME-SFI [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
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 481
Test voltage 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
1.3. Test voltage supply of circuit 87.
Connect socket box to component N3/10 (ME-SFI [ME] control unit).
Figure legend
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 482
- 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 voltage 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
- 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 87 relay, engine)
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 483
- Lines
- N10/1 (Driver-side SAM control unit with fuse and relay module)
End of test
1.4. Test current consumption of component N10/1kR (Circuit 87 relay, engine).
Connect socket box to component N3/10 (ME-SFI [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 current consumption of component N10/1kR (Circuit 87 relay, engine).
Test sequence
- Measure direct current with multimeter between sockets [F.4] 100 and [F.27] 123 of the 126-pole socket box tester.
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 484
- 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 N10/1kR (Circuit 87 relay, engine)
- N10/1kR (Circuit 87 relay, engine)
End of test
1.5. Test voltage supply of circuit 15.
Connect socket box to component N3/10 (ME-SFI [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 voltage 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.
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 485
- 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
- N10/1 (Driver-side SAM control unit with fuse and relay module)
Fuses
- FuseF43-F67
Relays
- I =N10/1kI (Circuit 87 relay, engine)
- K =N10/1kK (Circuit 87 relay, chassis)
- L =N10/1kL (Starter relay)
- M =N10/1kM (SEQ [ASG] pump control relay)
- N =N10/1kN (Circuit 15 relay)
- O =N10/1kO (FAN relay module)
- P =N10/1kP (Circuit 15R relay)
- R =N10/1kR (Air pump or oil cooler fan relay)
3. Power supply
Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)
Possible cause and remedy
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 486
- Check voltage supply according to wiring diagram.
4. Check component G3/6 (Right O2 sensor, after TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes ,0506

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0506
Component A16/2 (knock sensor 2, left) has a short circuit to ground. (P0332)
Possible cause:
- A16/2 (knock sensor 2, left)
Affected functions:
- Engine running
-------------------------------------------------
Test 1: Check component A16/2 (knock sensor 2, left).
1. Check component A16/2 (knock sensor 2, left).
Test prerequisite
- Engine running
Test sequence
- Briefly blip throttle.
Status of relevant actual value:
- Coolant temperature:Warning! Communication with ECU required.
- Knock control enable:Warning!
Specified value
- Knock control enable:YES
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
- Lines to component A16/2 (knock sensor 2, left)
- Component A16/2 (knock sensor 2, left)
End of test

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0447

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts












0447
Heating of component G3/3 (Left O2 sensor, before TWC [KAT]) : Open circuit (P0050)
Possible cause:
- G3/3 (Left O2 sensor, before TWC [KAT])
- N10/1kI (Circuit 87 relay, engine)
- N10/1f57 (Fuse 57)
- Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
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 G3/3 (Left O2 sensor, before TWC [KAT]).
Test 5: Check component G3/3 (Left O2 sensor, before TWC [KAT]).
1. Check power supply of component N3/10 (ME-SFI [ME] control unit).
Test 1.1: Test voltage supply of circuit 87. ( Check using actual value )
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 498
Test 1.2: Test voltage supply of circuit 30.
Test 1.3: Test voltage supply of circuit 87.
Test 1.4: Test current consumption of component N10/1kR (Circuit 87 relay, engine).
Test 1.5: Test voltage supply of circuit 15.
1.1. Test voltage supply of circuit 87. ( Check using actual value )
Test prerequisite
- The voltage test at component G1 (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 87.
1.2. Test voltage supply of circuit 30.
Connect socket box to component N3/10 (ME-SFI [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
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 499
Test voltage 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
1.3. Test voltage supply of circuit 87.
Connect socket box to component N3/10 (ME-SFI [ME] control unit).
Figure legend
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 500
- 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 voltage 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
- 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 87 relay, engine)
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 501
- Lines
- N10/1 (Driver-side SAM control unit with fuse and relay module)
End of test
1.4. Test current consumption of component N10/1kR (Circuit 87 relay, engine).
Connect socket box to component N3/10 (ME-SFI [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 current consumption of component N10/1kR (Circuit 87 relay, engine).
Test sequence
- Measure direct current with multimeter between sockets [F.4] 100 and [F.27] 123 of the 126-pole socket box tester.
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 502
- 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 N10/1kR (Circuit 87 relay, engine)
- N10/1kR (Circuit 87 relay, engine)
End of test
1.5. Test voltage supply of circuit 15.
Connect socket box to component N3/10 (ME-SFI [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 voltage 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.
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 503
- 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
- N10/1 (Driver-side SAM control unit with fuse and relay module)
Fuses
- FuseF43-F67
Relays
- I =N10/1kI (Circuit 87 relay, engine)
- K =N10/1kK (Circuit 87 relay, chassis)
- L =N10/1kL (Starter relay)
- M =N10/1kM (SEQ [ASG] pump control relay)
- N =N10/1kN (Circuit 15 relay)
- O =N10/1kO (FAN relay module)
- P =N10/1kP (Circuit 15R relay)
- R =N10/1kR (Air pump or oil cooler fan relay)
3. Power supply
Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)
Possible cause and remedy
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)  Diagnostic Trouble Codes  Page 504
- Check voltage supply according to wiring diagram.
4. Check component G3/3 (Left O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.
5. Check component G3/3 (Left O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0429

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0429
Heating of component G3/5 (Left O2 sensor, after TWC [KAT]) : Short circuit to positive (P0058)
Possible cause:
- G3/5 (Left O2 sensor, after TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/5 (Left O2 sensor, after TWC [KAT]).
1. Check component G3/5 (Left O2 sensor, after TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0430

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0430
Heating of component G3/5 (Left O2 sensor, after TWC [KAT]) : Short circuit to ground (P0057)
Possible cause:
- G3/5 (Left O2 sensor, after TWC [KAT])
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Check component G3/5 (Left O2 sensor, after TWC [KAT]).
1. Check component G3/5 (Left O2 sensor, after TWC [KAT]).
Warning!Communication with ECU required.

Mercedes Benz Truck G 550 Diagnostic Trouble Codes, 0494

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0494
The knock control has a malfunction. (P0324)
Possible cause:
- Test control unit.
Affected functions:
- Engine running
-------------------------------------------------
Test 1: Test control unit.
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 (ME-SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME-SFI [ME] control
unit).
Read coding and transfer to the new control unit.End of test