A/C Compressor Controls - Electrical Diagnosis Revised
Bulletin: 93-8-3Date: Nov., '92
Ref.No.: 93-53-8
Corp.Ref.No.: 238117R
SUBJECT:
SERVICE MANUAL UPDATE - SECTIONS 1B AND 8A - ELECTRICAL DIAGNOSIS (A/C: COMPRESSOR CONTROLS)
MODELS AFFECTED:
1992-93 CENTURY MODELS
The following revisions should be made to Section 1B of the 1992-93 Century Service Manuals.
1992 Model Year
1B-7 Under the title "Relays and Switches", the paragraph "High-
Pressure Compressor Cut-Out Switch" is for the 3300 Engine
Only.
1B-7 Under the title that reads "Pressure Cycling Switch", it
should indicate that it is for the 3300 Engine Only.
1B-45 The paragraph that reads "Low-Pressure Compressor Cut-Out
Switch" should read "High-Pressure Compressor Cut-Out Switch" (3300 Engine Only).
1B-45 The paragraph that reads "High-Pressure Compressor Cut-Out
Switch" should read "High/Low-Pressure Compressor Cut-Out Switch" (2.5L Engine Only).
1993 Model Year
1B-6 Under the title "Relays and Switches", disregard the
paragraph "Low-Pressure Cut-Out Switch" 3300 engine and refer to "Pressure Cycling Switch" (3300 engine Only).
1B-45 The paragraph that reads "Pressure Cycling Switch" should
indicate that it is for the 3300 Engine Only.
1B-46 The paragraph that reads "Low-Pressure Compressor Cut-Out
Switch" should read "High-Pressure Compressor Cut-Out Switch" (3300 Engine Only).
Service Manual Update - Section 8A - Electrical diagnosis (Air Conditioning: Compressor Controls (3300 engine) A/C Low Pressure Cut-Out Switch) - Incorrect component name and variance reading.
1992-93 Model Year
The A/C Low Pressure Cut-Out Switch is now called A/C Pressure Cycling Switch, its variances should read as follows:
Opens below 172 kPa (25 PSI) Closed above 317 kPa (46 PSI)
This information should replace the information concerning the A/C Low Pressure Cut-Out Switch found in CELL 64 (3300 engine).
Please update the respective Service Manuals accordingly.