Test sequence
- Switch off ignition.
- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).
- Measure direct current with multimeter between sockets [F.4] 100 and [F.19] 115 of the 126-pole socket box tester.
- Switch on ignition.
Warning!Perform the measurement only for a short time so that component M33 (electric air pump) does not overheat.Specified value
- Amperage[0.1...0.3] A
- Component M33 (electric air pump) is switched on and is heard to run.
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
- N10/1f61 (Fuse 61)
- Lines to component N10/1kR (Air pump or oil cooler fan relay)
- N10/1kR (Air pump or oil cooler fan relay)
End of test
1066
Relay for air pump : Short circuit to ground (P2257)
Possible cause:
- N10/1kP (Secondary air injection relay)
- N10/1kR (Air pump or oil cooler fan relay)
- N10/1f61 (Fuse 61)
Affected functions:
- Engine diagnosis
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