When performing an asterisked (*) troubleshooting inspection, slightly shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, verify that the connectors, terminals and wiring harnesses are connected correctly and undamaged.

NO.1 KEYLESS ENTRY SYSTEM DOES NOT OPERATE NORMALLY [KEYLESS ENTRY SYSTEM]

1	Keyless entry system does not operate normally
DESCRIPTION	Malfunction in door lock linkage system, or BCM
POSSIBLE CAUSE	Malfunction in BCM power supply Open circuit in IG1 and/or B+ power supply circuit Open or short circuit in ground circuit BCM malfunction Malfunction in keyless switch related circuit Keyless switch malfunction Malfunction in door switch signal circuit Open or short circuit in wiring between BCM and door switch Door switch malfunction Malfunction in door lock/unlock signal circuit Door lock actuator malfunction Open or short circuit in wiring between BCM and door lock actuator Malfunction in turn light signal circuit BCM malfunction Open or short circuit wiring between BCM and each turn signal light
Courtesy of MAZDA MOTORS CORP.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

No.1 Keyless Entry System Does Not Operate Normally [Keyless Entry System]: Notes