1. Install the manifold gauge.
2. Verify the high-pressure side reading of the manifold gauge.
3. Measure the terminal voltage at PCM terminals 2BB, 2AX and 2AJ
4. Using the graph below, measure and verify the terminal voltage at 2AX.
5. Follow the PCM inspection when measuring the other terminal voltages..
Terminal 2BB: Approx. 5 V (Ignition switch on)
Terminal 2AJ: 1.0 V or less
If the each voltage is not normal, inspect the related wiring harness.
If there is any malfunction, replace the related wiring harness.
If wiring harness is normal, replace the refrigerant pressure sensor.

Refrigerant Pressure Sensor Inspection [Full Auto Air Conditioner]
Refrigerant Pressure Sensor Removal/Installation [Full Auto Air Conditioner]How the SRS Air Bags Work
Your Mazda is equipped with the following types of SRS air bags. SRS air bags
are designed to work together with the seat belts to help to reduce injuries during
an accident.
The SRS air bags are designed to provide further protection for passengers in
addition to the seat belt functions. Be ...
Seat Weight Sensor Inspection [Two Step Deployment Control System]
CAUTION:
If any of the following work is performed, perform the seat weight sensor
inspection using the M-MDS.
Removal of the passenger-side seat
Loosening and retightening of passenger’s seat fixing bolts
Or, the vehicle is involved in a collision
...
Transaxle Fluid Temperature (Tft) Sensor [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The transaxle fluid temperature (TFT) sensor detects the ATF temperature
in the oil pan.
The transaxle fluid temperature (TFT) sensor signal is used for automatic
shift control, TCC control, line pressure control, direct electric shift control,
learning contr ...