3 L4-2.5L (2010)
Compressor Clutch: All Technical Service Bulletins
A/C - A/C Compressor Squeaking Noises
Bulletin No: 07-001/11
Last Issued: 03/04/2011
Subject:
SQUEAK NOISE FROM A/C COMPRESSOR
APPLICABLE MODEL(S)/VINS
2010-2011 Mazda3 vehicles (including Mazdaspeed3)
with VINS lower than JM1BL******367236 (produced before July 27, 2010).
DESCRIPTION
Some vehicles may exhibit a squeak noise from the magnetic clutch of the A/C compressor. The noise occurs every time the magnetic clutch engages,
and is caused by insufficient engagement force between the pressure plate and the A/C compressor pulley. To correct the problem, the design of the
pressure plate has been changed.
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
1. Verify customer concern.
2. Raise the vehicle.
3. Remove the undercover.
4. Remove the A/C compressor cover (A) - 2.5L (LF) only.
5. Lower the vehicle.
6. After the vehicle is identified, select the following items from the initialization screen on the M-MDS to lock the A/C pressure plate.
a. Select "Data Logger."
b. Select "Modules."
c. Select "PCM."
d. Select "ACCS" from the simulation items in the PID table.
e. Turn on "A/C Relay."
7. Remove the bolt (A) from the A/C pressure plate (B), then turn off the "A/C Relay" with the M-MDS.
