Lock Release Solenoid Inspection

Disconnect the negative battery cable.
Remove the rear door lower trim. (See REAR DOOR LOWER TRIM REMOVAL/INSTALLATION .)
Disconnect the lock release solenoid connector.
Measure the resistance of the lock release solenoid individually.
- If not within the specification, replace the front seat belt.
Standard

54-66 ohms

Fig 1: Identifying Lock Release Solenoid Connector
Courtesy of MAZDA MOTORS CORP.