Test Point 2- Compressor Magnetic Clutch

Test Point 2- COMPRESSOR MAGNETIC CLUTCH

2. Compressor Magnetic Clutch (Test Lamp)

Turn on ignition.

Set temperature switch to 18 °C.

Set program switch to any position. Press AC switch.

The magnetic clutch must be heard (click) when pressing the AC switch.

Connect test lamp on ground (engine/body), if the clutch does not function.

Test lamp must come on at following test points.

a) Compressor clutch plug (in front of camshaft cover on right side).

b) Connection on electric air valve (on right engine cross member).

c) Socket end term. 9 of engine multiple-pin plug (in engine compartment, right).

d) On both connections of low pressure switch (on side of filter drier).

e) On CEL plug M 12, K 21 and G 21.

f) On both connections of icing-up protection switch (on blower housing).

g) On term. 2 (purple/yellow) and term. 1 (red/white) of 4-pin plug for outside sensor (center console).

h) On term. 6 (purple/yellow) and term. 5 (red/white) and term. 7 (green/blue) of connected control switch plug.

i) CEL fuse no.17.

Note: This test only covers the electric activation of the compressor clutch - perform trouble-shooting procedures step by step!