Test prerequisites
- Actuation of component M33 (electric air pump) is not OK.
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.2] 98 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 measurement value is OK.Question
- Does component M33 (electric air pump) run during the current measurement?
YES
The test was okay.End of test
NO
Test actuation of component M33 (electric air pump).
Figure legend:1
- M33 (electric air pump)
Figure legend:2
- N10/1kR (Air pump or oil cooler fan relay)
Test sequence
- Switch off ignition.
- Detach coupling at component M33 (electric air pump).
- (M33) Measure direct voltage with multimeter between 2 and 1 (M33)
- Switch on ignition.
- Insert bridge for actuating component N10/1kR (Air pump or oil cooler fan relay).:
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