Cooper (R50) L4-1.6L (W10) (2002)
Power Steering Pump: Customer Interest
Steering - Power Steering Pump Cooling Fan Inoperative
SI M32 01 04
Steering and Wheel Alignment
September 2004
Technical Service
This Service Information Bulletin supersedes S.I. M 32 01 04 dated June 2004.
[NEW] designates changes to this revision
SUBJECT
Power Steering Pump Cooling Fan Activation
MODEL
[NEW] Vehicles produced from the start of series production through December 2002.
R50 Cooper
R53 Cooper S
SITUATION
A customer may complain of engine overheats with coolant temperature gauge displayed in red. In rare situations, power steering assist may be reduced.
This situation can occur under extreme conditions when the vehicle is operated for extended periods at high ambient temperatures.
CAUSE
Power steering pump cooling function has the same circuit protection with auxiliary engine cooling fan (fuse 05). Internal corrosion or external blockage
of the power steering pump cooling fan may cause the fuse (FOS) to blow, causing an inoperable auxiliary engine cooling fan.
CORRECTION
In case of a customer complaint only, the wiring for the power steering cooling fan can be modified to separate it from the auxiliary engine cooling fan
circuit protection.
PROCEDURE
Preliminary work:
^
Disconnect the negative battery cable.
^
Pull off the rubber seals above the passenger's and driver's side air intake ducts.
Retrofitting the relay carrier:
Loosen nut (1) and lift the coolant
expansion tank (2) out of its bracket.