Possible cause of fault,
trouble - shooting - if fan motor M11 is not defective:
1. Actuation and operation of
radiator fan motor M11: see accompanying function table. This table can be
used to simulate actuation of M11. For this, remove the relevant wiring
harness plug from each switch and replace the break contact or make contact
with bridges.
2. Fuse F52 defective.
3. Lead interruption between
M11 / lead RTWS and radiator fan relay K87 / Ter. (8).
4. Lead interruption between
M11 / lead RTWS and radiator fan relay K26 / Ter. (8).
5. Lead interruption between
M11 / lead BRGN and radiator fan relay K52 / Ter. (2)
6. Radiator fan relay K87
defective (see K87).
7. Radiator fan relay K52
defective (see K52).
8. Radiator fan relay K26
defective (see K26).
9. Radiator fan motor M4
defective (see M4).
10. Coolant temperature switch
S29 defective (see S29) - 20 SE, X 20 SE,
X 20 XEV only.
11. Coolant temperature switch
S88 defective (see S88) - X 25 XE, X 30 XE only.
12. Coolant temperature switch
S128 defective (see S128).
13. High pressure compressor
switch (fan) S20.3 defective (see S20.3).
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