P2505

Relay 'Circuit 87' ( Engine ) (P2505)


Possible cause:

- N3/10 (ME-SFI [ME] control unit)
- K40/4kK (Engine electronics and chassis relay)
Affected functions:

- Battery / On-board electrical system

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Test 1: Check power supply of component N3/10 (ME-SFI [ME] control unit).

Test 2: Arrangement of fuses

1. Check power supply of component N3/10 (ME-SFI [ME] control unit).

Test 1.1: Test voltage supply of circuit 87.

1.1. Test voltage supply of circuit 87.
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).







Test sequence

- Switch off ignition.
- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).
- 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

- K40/4f43 (Fuse 43)
- K40/4f44 (Fuse 44)
- K40/4kK (Engine electronics and chassis relay)
- Lines
- K40/4 (Front passenger fuse and relay module)
End of test













2. Arrangement of fuses
Figure legend/figure

- N10/1 (Front SAM control unit with fuse and relay module)
Fuses

- FuseF43-F65
Relays

- I =N10/1kI (Fanfare horns relay)
- M =N10/1kM (Circuit 15R relay)
- S =N10/1kS (Starter relay)
- Q =N10/1kQ (Wipe ON/OFF relay)
- L =N10/1kL (Wipe stage 1 and 2 relay)
- K =N10/1kK (Circuit 87 relay, chassis)
- R =N10/1kR (Circuit 87 relay, engine)
- O =N10/1kO (Air pump relay)
- N =N10/1kN (Backup relay)