A/C System - Inoperative/MIL ON/DTC P0550 Set
Bulletin No. 001/00Issued 02/07/00
Revised
Section
07
Applicable Model/s
1995-98 Protege
1996-97 Miata
Subject
A/C INOPERATIVE - P/S PRESSURE SWITCH TERMINAL ASSEMBLY CORRODED
BULLETIN NOTE
- This bulletin supersedes 07-001/99. The WARRANTY INFORMATION has changed.
APPLICABLE MODEL(S)/VINS
1995-98 Protege with a "BP" or "Z5" engine and VINs lower than JM1 BC14** W0182001.
1996-97 Miata with VINs lower than JM1 NA35** V0739029.
DESCRIPTION
Some vehicles may exhibit the air conditioning (NC) system inoperative with the Malfunction Indicator lamp (MIL) ON. This may be due to the Power Steering Pressure (PSP) switch terminal assembly becoming corroded causing the Powertrain Control Module (PCM) to open the A/C relay circuit and set Diagnostic Trouble Code (DTC) P0550. A modified PSP switch terminal assembly is available to resolve this concern.
Customers having this concern should have their vehicle repaired using the following procedure.
REPAIR PROCEDURE
1. Verify customer concern.
2. Turn the A/C system ON and disconnect the PSP switch.
- If the A/C system does not function, refer to the Workshop Manual for troubleshooting and repair information.
- If the A/C system operates, replace only the PSP switch terminal assembly.
Note
Replace only the terminal assembly. Do not replace the entire PSP switch.
3. Verify repair.
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by "do-it-yourselfers." consumers should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies, consumers should contact their nearest authorized Mazda dealership.
PART(S) INFORMATION
Part Number Description Qty. Notes
BC1D 32 234A Power Steering Pressure Switch 1 ---
Terminal Assembly
WARRANTY INFORMATION
Note
This information applies to verified customer complaints on vehicles covered under normal warranty. Refer to the SRT microfiche for warranty term information.
Warranty Type A
Symptom Code 6X
Damage Code 93
Part Number Main Cause BC1D 32 234A
Quantity 1
Operation Number/Labor Hours XX094XRX/0.6 (terminal assembly replacement)