2010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
A L L Diagnostic Trouble Codes ( DTC ): B Code Charts
FSCU4 (RIGHT)
The voltage supply is too low.
Test 1: Check power supply at control unit N118 (Fuel pump control module).
Test 2: Possible cause:
- N118 (Fuel pump control module)
Affected functions:
-
Fuel system
1. Check power supply at control unit N118 (Fuel pump control module).
Possible cause and remedy
- Check fuses N10/1f4 (Fuse 4) and F33f113 (Prefuse 113).
-
Question
-
Are the fuses OK?
YES
Test prerequisite
Test sequence
- Switch on ignition.
- Unplug 4-pin connector from component N118 (Fuel pump control module).
- Unplug 8-pin connector from component N118 (Fuel pump control module).
- Measure direct voltage with multimeter between sockets (Kl.30) N118.1.1 and (Kl.31) N118.1.2
- Measure direct voltage with multimeter between sockets (Kl.15) N118.2.5 and (Kl.31) N118.1.2
NOTE
- Perform the test one after the other for each of the components N118/3 - N118/4.
Specified values
- Voltage: [11.0 ... 14.5] V
Question
-
Are the measurement values OK?
10.52SS
Page 12010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
10.52SS
Page 2
YES
The measurement value is OK.Further possible causes of fault
- Inspect plug connections for corrosion, pinched insulation and loose contact.
End of test
NO
The measurement value is not OK.Possible cause and remedy
-
Inspect lead of voltage supply to control module N118 (Fuel pump control module) if necessary for loose contact, damage and corrosion and
repair.
End of test
NO
Replace faulty fuse.End of test
2. No further information available.2010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
FSCU4 (LEFT)
The voltage supply is too low.
Test 1: Check power supply at control unit N118 (Fuel pump control module).
Test 2: Possible cause:
- N118 (Fuel pump control module)
Affected functions:
-
Fuel system
1. Check power supply at control unit N118 (Fuel pump control module).
Possible cause and remedy
- Check fuses N10/1f4 (Fuse 4) and F33f113 (Prefuse 113).
-
Question
-
Are the fuses OK?
YES
Test prerequisite
Test sequence
- Switch on ignition.
- Unplug 4-pin connector from component N118 (Fuel pump control module).
- Unplug 8-pin connector from component N118 (Fuel pump control module).
- Measure direct voltage with multimeter between sockets (Kl.30) N118.1.1 and (Kl.31) N118.1.2
- Measure direct voltage with multimeter between sockets (Kl.15) N118.2.5 and (Kl.31) N118.1.2
NOTE
- Perform the test one after the other for each of the components N118/3 - N118/4.
Specified values
- Voltage: [11.0 ... 14.5] V
Question
-
Are the measurement values OK?
10.52SS
Page 32010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
10.52SS
Page 4
YES
The measurement value is OK.Further possible causes of fault
- Inspect plug connections for corrosion, pinched insulation and loose contact.
End of test
NO
The measurement value is not OK.Possible cause and remedy
-
Inspect lead of voltage supply to control module N118 (Fuel pump control module) if necessary for loose contact, damage and corrosion and
repair.
End of test
NO
Replace faulty fuse.End of test
2. No further information available.2010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
FSCU4 (RIGHT)
The voltage supply is too high
Test 1: Check power supply at control unit N118 (Fuel pump control module).
Test 2: Possible cause:
- N118 (Fuel pump control module)
Affected functions:
-
Fuel system
1. Check power supply at control unit N118 (Fuel pump control module).
Possible cause and remedy
- Check fuses N10/1f4 (Fuse 4) and F33f113 (Prefuse 113).
-
Question
-
Are the fuses OK?
YES
Test prerequisite
Test sequence
- Switch on ignition.
- Unplug 4-pin connector from component N118 (Fuel pump control module).
- Unplug 8-pin connector from component N118 (Fuel pump control module).
- Measure direct voltage with multimeter between sockets (Kl.30) N118.1.1 and (Kl.31) N118.1.2
- Measure direct voltage with multimeter between sockets (Kl.15) N118.2.5 and (Kl.31) N118.1.2
NOTE
- Perform the test one after the other for each of the components N118/3 - N118/4.
Specified values
- Voltage: [11.0 ... 14.5] V
Question
-
Are the measurement values OK?
10.52SS
Page 52010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
10.52SS
Page 6
YES
The measurement value is OK.Further possible causes of fault
- Inspect plug connections for corrosion, pinched insulation and loose contact.
End of test
NO
The measurement value is not OK.Possible cause and remedy
-
Inspect lead of voltage supply to control module N118 (Fuel pump control module) if necessary for loose contact, damage and corrosion and
repair.
End of test
NO
Replace faulty fuse.End of test
2. No further information available.2010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
FSCU4 (LEFT)
The voltage supply is too high
Test 1: Check power supply at control unit N118 (Fuel pump control module).
Test 2: Possible cause:
- N118 (Fuel pump control module)
Affected functions:
-
Fuel system
1. Check power supply at control unit N118 (Fuel pump control module).
Possible cause and remedy
- Check fuses N10/1f4 (Fuse 4) and F33f113 (Prefuse 113).
-
Question
-
Are the fuses OK?
YES
Test prerequisite
Test sequence
- Switch on ignition.
- Unplug 4-pin connector from component N118 (Fuel pump control module).
- Unplug 8-pin connector from component N118 (Fuel pump control module).
- Measure direct voltage with multimeter between sockets (Kl.30) N118.1.1 and (Kl.31) N118.1.2
- Measure direct voltage with multimeter between sockets (Kl.15) N118.2.5 and (Kl.31) N118.1.2
NOTE
- Perform the test one after the other for each of the components N118/3 - N118/4.
Specified values
- Voltage: [11.0 ... 14.5] V
Question
-
Are the measurement values OK?
10.52SS
Page 72010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
10.52SS
Page 8
YES
The measurement value is OK.Further possible causes of fault
- Inspect plug connections for corrosion, pinched insulation and loose contact.
End of test
NO
The measurement value is not OK.Possible cause and remedy
-
Inspect lead of voltage supply to control module N118 (Fuel pump control module) if necessary for loose contact, damage and corrosion and
repair.
End of test
NO
Replace faulty fuse.End of test
2. No further information available.
A L L Diagnostic Trouble Codes ( DTC ): B Code Charts
FSCU4 (RIGHT)
The voltage supply is too low.
Test 1: Check power supply at control unit N118 (Fuel pump control module).
Test 2: Possible cause:
- N118 (Fuel pump control module)
Affected functions:
-
Fuel system
1. Check power supply at control unit N118 (Fuel pump control module).
Possible cause and remedy
- Check fuses N10/1f4 (Fuse 4) and F33f113 (Prefuse 113).
-
Question
-
Are the fuses OK?
YES
Test prerequisite
Test sequence
- Switch on ignition.
- Unplug 4-pin connector from component N118 (Fuel pump control module).
- Unplug 8-pin connector from component N118 (Fuel pump control module).
- Measure direct voltage with multimeter between sockets (Kl.30) N118.1.1 and (Kl.31) N118.1.2
- Measure direct voltage with multimeter between sockets (Kl.15) N118.2.5 and (Kl.31) N118.1.2
NOTE
- Perform the test one after the other for each of the components N118/3 - N118/4.
Specified values
- Voltage: [11.0 ... 14.5] V
Question
-
Are the measurement values OK?
10.52SS
Page 12010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
10.52SS
Page 2
YES
The measurement value is OK.Further possible causes of fault
- Inspect plug connections for corrosion, pinched insulation and loose contact.
End of test
NO
The measurement value is not OK.Possible cause and remedy
-
Inspect lead of voltage supply to control module N118 (Fuel pump control module) if necessary for loose contact, damage and corrosion and
repair.
End of test
NO
Replace faulty fuse.End of test
2. No further information available.2010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
FSCU4 (LEFT)
The voltage supply is too low.
Test 1: Check power supply at control unit N118 (Fuel pump control module).
Test 2: Possible cause:
- N118 (Fuel pump control module)
Affected functions:
-
Fuel system
1. Check power supply at control unit N118 (Fuel pump control module).
Possible cause and remedy
- Check fuses N10/1f4 (Fuse 4) and F33f113 (Prefuse 113).
-
Question
-
Are the fuses OK?
YES
Test prerequisite
Test sequence
- Switch on ignition.
- Unplug 4-pin connector from component N118 (Fuel pump control module).
- Unplug 8-pin connector from component N118 (Fuel pump control module).
- Measure direct voltage with multimeter between sockets (Kl.30) N118.1.1 and (Kl.31) N118.1.2
- Measure direct voltage with multimeter between sockets (Kl.15) N118.2.5 and (Kl.31) N118.1.2
NOTE
- Perform the test one after the other for each of the components N118/3 - N118/4.
Specified values
- Voltage: [11.0 ... 14.5] V
Question
-
Are the measurement values OK?
10.52SS
Page 32010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
10.52SS
Page 4
YES
The measurement value is OK.Further possible causes of fault
- Inspect plug connections for corrosion, pinched insulation and loose contact.
End of test
NO
The measurement value is not OK.Possible cause and remedy
-
Inspect lead of voltage supply to control module N118 (Fuel pump control module) if necessary for loose contact, damage and corrosion and
repair.
End of test
NO
Replace faulty fuse.End of test
2. No further information available.2010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
FSCU4 (RIGHT)
The voltage supply is too high
Test 1: Check power supply at control unit N118 (Fuel pump control module).
Test 2: Possible cause:
- N118 (Fuel pump control module)
Affected functions:
-
Fuel system
1. Check power supply at control unit N118 (Fuel pump control module).
Possible cause and remedy
- Check fuses N10/1f4 (Fuse 4) and F33f113 (Prefuse 113).
-
Question
-
Are the fuses OK?
YES
Test prerequisite
Test sequence
- Switch on ignition.
- Unplug 4-pin connector from component N118 (Fuel pump control module).
- Unplug 8-pin connector from component N118 (Fuel pump control module).
- Measure direct voltage with multimeter between sockets (Kl.30) N118.1.1 and (Kl.31) N118.1.2
- Measure direct voltage with multimeter between sockets (Kl.15) N118.2.5 and (Kl.31) N118.1.2
NOTE
- Perform the test one after the other for each of the components N118/3 - N118/4.
Specified values
- Voltage: [11.0 ... 14.5] V
Question
-
Are the measurement values OK?
10.52SS
Page 52010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
10.52SS
Page 6
YES
The measurement value is OK.Further possible causes of fault
- Inspect plug connections for corrosion, pinched insulation and loose contact.
End of test
NO
The measurement value is not OK.Possible cause and remedy
-
Inspect lead of voltage supply to control module N118 (Fuel pump control module) if necessary for loose contact, damage and corrosion and
repair.
End of test
NO
Replace faulty fuse.End of test
2. No further information available.2010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
FSCU4 (LEFT)
The voltage supply is too high
Test 1: Check power supply at control unit N118 (Fuel pump control module).
Test 2: Possible cause:
- N118 (Fuel pump control module)
Affected functions:
-
Fuel system
1. Check power supply at control unit N118 (Fuel pump control module).
Possible cause and remedy
- Check fuses N10/1f4 (Fuse 4) and F33f113 (Prefuse 113).
-
Question
-
Are the fuses OK?
YES
Test prerequisite
Test sequence
- Switch on ignition.
- Unplug 4-pin connector from component N118 (Fuel pump control module).
- Unplug 8-pin connector from component N118 (Fuel pump control module).
- Measure direct voltage with multimeter between sockets (Kl.30) N118.1.1 and (Kl.31) N118.1.2
- Measure direct voltage with multimeter between sockets (Kl.15) N118.2.5 and (Kl.31) N118.1.2
NOTE
- Perform the test one after the other for each of the components N118/3 - N118/4.
Specified values
- Voltage: [11.0 ... 14.5] V
Question
-
Are the measurement values OK?
10.52SS
Page 72010 Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
10.52SS
Page 8
YES
The measurement value is OK.Further possible causes of fault
- Inspect plug connections for corrosion, pinched insulation and loose contact.
End of test
NO
The measurement value is not OK.Possible cause and remedy
-
Inspect lead of voltage supply to control module N118 (Fuel pump control module) if necessary for loose contact, damage and corrosion and
repair.
End of test
NO
Replace faulty fuse.End of test
2. No further information available.
