Mazda RX-8 Workshop Manual page 3403

PKB Indicate parking brake signal.
1
REV Indicate Reverse signal state.
2
Microphone* Indicate the connection state of a microphone.
3
4 SPEED* Indicate the present vehicle speed by kph/mph (a maximum of 3 digits)
Indicate TNS signal state.
*
TNS
5
GPS Antenna* Indicate the connection state of a GPS antenna.
6
Traffic System Indicate the RDS-TMC system availability on the vehicle.
7
*
It is used for symptom troubleshooting. (Troubleshooting index No.4, No.5, No.7 and
No.8)
If inspect microphone related signals:
1. Select "Navigation Check Menu".
2. Select "Microphone Check".
ON: Parking brake applied.
OFF: Parking brake released.
ON: Reverse
OFF: Others
OK: Connect
NCON: Disconnect
ON: Turn TNS ON
OFF: Turn TNS OFF
OK: Connect
NCON: Disconnect
TMC: Equip
NONE: Not equip