626 L4-2184cc 2.2L SOHC F2 (1989)
Engine Control Module: All Technical Service Bulletins
A/C Compressor - Continuous Engagement
Category U
Applicable Model/s 1988-89 626/MX-6
Subject CONTINUOUS A/C COMPRESSOR ENGAGEMENT
Bulletin No.
002/90
Issued
4/23/90
Revised
626/MX-6 Turbo Models
626/MX-6 Non-Turbo Models
DESCRIPTION
If the A/C compressor is engaged all the time -- even when the A/C and blower switches are OFF -- the ground circuit in the E.G.I. control unit may have
been damaged by a surge current from the magnetic clutch or the cooling fan motor.
Continuous A/C compressor operation may cause evaporator freeze-up. Depending on the weather, it might take 30-60 minutes to freeze-up.
Although the surge current caused the E.C.U. damage, it has been found that the root of the cause is a faulty transistor installed in some control units.
