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No. 2 All Keyless Entry System Functions Inoperative [Keyless Entry System]: Notes
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- 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.
TROUBLESHOOTING CHART
| 2 |
All on-board diagnostic functions inoperative |
| DESCRIPTION |
- Malfunction in BCM power supply circuit, door latch switch circuit, BCM ground circuit, or keyless receiver
|
| POSSIBLE CAUSE |
- Malfunction in IG1 or power supply signal circuit of BCM
- BCM power supply fuse malfunction
- Malfunction in wiring harness between BCM power supply fuses and BCM
- Malfunction in door open/closed signal circuit of BCM
- Door latch switch system malfunction
- BCM malfunction
- Malfunction in wiring harness between BCM and door latch switch
- Malfunction in BCM GND signal circuit
- Malfunction in wiring harness between BCM and ground
- Malfunction in keyless receiver
- Keyless receiver malfunction
- Malfunction in wiring harness between keyless receiver and BCM
|
 Courtesy of MAZDA MOTORS CORP.
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