Key Reminder Buzzer Does Not Sound With Any Door Open (Key In Ignition)
- Check ROOM fuse (15-amp). If ROOM fuse is okay, go to next step. If ROOM fuse is blown, repair wiring and replace fuse.
- Remove driver's front scuff plate. Remove driver's kick panel. Remove CPU from joint box. Measure voltage between ground and joint box terminal 1J. See Figure
. If battery voltage is present, go to next step. If battery voltage is not present, repair wiring between ROOM fuse (15-amp) and CPU.
- Check for continuity between ground and joint box terminal 1G. If continuity exists, go to next step. If continuity does not exist, repair wiring between CPU and ground. See WIRING DIAGRAMS.
- Place key in ignition. Measure voltage between ground and joint box terminal 1B. If battery voltage is present, go to step 7). If battery voltage is not present, go to next step.
- Remove steering column cover. Measure voltage between ground and key reminder switch terminal "A". See Fig 1
. If battery voltage is present, go to next step. If battery voltage is not present, repair wiring between ROOM fuse (15-amp) and key reminder switch.
Courtesy of MAZDA MOTORS CORP.
- Measure voltage between ground and key reminder switch terminal "B". If battery voltage is present, repair wiring between CPU and key reminder switch. If battery voltage is not present, replace ignition lock.
- Open any door. Check for continuity between ground and joint box terminal 1L. If continuity exists, replace CPU. If continuity does not exist, go to next step.
- Remove door switch. Inspect door switch. See POWER DOOR LOCKS/KEYLESS ENTRY article. If door switch is okay, repair wiring between CPU and door switch. See WIRING DIAGRAMS. If door switch is bad, replace door switch.