Inspection Of Output Duty Pressure Control Solenoid

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

Connect the (+) terminal of a dwell meter to terminal 81 at the powertrain control module and the (-) terminal to a ground. Set the dwell meter selector to the 4 cylinder position.
Apply parking brake and use wheel chocks at the front and rear of the wheels.
Start the engine.
Depress the brake pedal firmly.
Shift the selector lever to D range.
CAUTION:
- If the accelerator pedal is depressed for longer then 5 seconds while the brake pedal is depressed, the transaxle could be damaged. Therefore, perform Step 6 within 5 seconds of each other.
NOTE:
- The dwell meter indicates the OFF duty ratio.
Depress the accelerator pedal slowly and verify that the duty ratio changes as shown in the graph.
- If not as specified, inspect the powertrain control module and pressure control solenoid. See RESISTANCE INSPECTION (ON-VEHICLE) .
  
  Fig 1: Pressure Control Solenoid Duty Ratio/Throttle Opening Chart
  Courtesy of MAZDA MOTORS CORP.