Auxiliary fan control module replaced by new version - BT83.40-P-0001-01S
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MODEL WDB140.### #A as of 1.9.95 with CODE (581a) Air conditioning (automatic)
As of 09/95 the relays (K9 and K9/1) and the preresistors (R15 and R15/1) required for actuation of the auxiliary fan (M4) have been replaced by the auxiliary fan control module (N65/1) on all engines installed.
Actuation is accomplished via the auxiliary fan control module (N65/1).