[4] Check component M3 (Fuel pump).: Signal wire OPEN CIRCUIT

[4] Check component M3 (Fuel pump).: Signal wire OPEN CIRCUIT

Test 1: Signal wire Check component M3 (Fuel pump).

1. Signal wire Check component M3 (Fuel pump).

Test 1.1: Arrangement of fuses N10/2 (Rear SAM control unit with fuse and relay module)

Test 1.2: Arrangement of relays N10/2 (Rear SAM control unit with fuse and relay module)

Test 1.3: Guided test

Test 1.4: Test relay N10/2kS (Fuel pump relay).

1.1. Arrangement of fuses N10/2 (Rear SAM control unit with fuse and relay module)
Note

- WIS is not available on this system.
- It is not possible to display the requested WIS document [ gf5415p125606sx ].
- You can start WIS on another system and display the WIS document by entering the document number [ gf5415p125606sx ] in the 'Contents' field.


1.1. No further information available.


1.2. Arrangement of relays N10/2 (Rear SAM control unit with fuse and relay module)
Note

- WIS is not available on this system.
- It is not possible to display the requested WIS document [ gf5415p125704sx ].
- You can start WIS on another system and display the WIS document by entering the document number [ gf5415p125704sx ] in the 'Contents' field.


1.2. No further information available.


1.3. Guided test
Signal wire Open circuit
Figure legend

- N10/2 (Rear SAM control unit with fuse and relay module)
- N10/2kS (Fuel pump relay)
Special tools

- Test cable 266 589 01 63 00
- Socket box 129 589 00 21 00
Test sequence

- Switch off ignition.
- Connect 35-pole socket box at engine wiring harness.
- Remove relay N10/2kS (Fuel pump relay).
- Measurement is performed at the contact slot of component N10/2kS (Fuel pump relay).
- Measure resistance with multimeter between socket (F.32) 2 of the 35-pole socket box tester and socket (N10/2kS) 1
Specified value

- Resistor< 1,5ohms
Question

- Is the measurement value OK?







YES
The measurement value is OK.Possible cause and remedy

- 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..
- Test relay N10/2kS (Fuel pump relay), replace if necessary.
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Test wiring/ plug connection.
End of test

1.4. Test relay N10/2kS (Fuel pump relay).
Note Connector assignments with key F7Figure legend

- f115 - f152:Fuses
- M - S:Relays
- N10/2:N10/2 (Rear SAM control unit with fuse and relay module)
Test prerequisites

- Power supply (circuit 30) is OK.
Test sequence

- Unplug component N10/2kS (Fuel pump relay) from component N10/2 (Rear SAM control unit with fuse and relay module).
- Measure resistance with multimeter between pins (N10/2kS)30 and (N10/2kS) 87
- Connect terminal 85 of relay N10/2kS (Fuel pump relay) with ground.
- Connect terminal 86 of relay N10/2kS (Fuel pump relay) with plus.
Specified value

- Resistor:< 1ohms
Question

- Is the measurement value OK?













YES
The measurement value is OK.Possible cause and remedy in the case of complaint

- Check contacts at component N10/2kS (Fuel pump relay) for loose contact.
- Check lines to component N10/2kS (Fuel pump relay) as per wiring diagram.
- N10/2 (Rear SAM control unit with fuse and relay module)
End of test







NO
The measurement value is not OK.Possible cause and remedy

- Component N10/2kS (Fuel pump relay) is defective.
End of test