Resistance Inspection

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Disconnect the air bypass valve connector. (See Dynamic Pressure Turbo Removal/Installation .)
Inspect the resistance between air bypass valve terminals A and B.

Fig 1: Air Bypass Valve Connector Terminals
Courtesy of MAZDA MOTORS CORP.

Air bypass valve resistance

12.7-13.7 ohms [23°C {73 °F}]
- If not within the specification, replace the dynamic pressure turbo. (See Dynamic Pressure Turbo Removal/Installation .)