1. Disconnect the back-up light switch connector.
2. Inspect for continuity between the back-up light switch terminals using an ohmmeter.


Back-up light switch removal/installation
Flasher unit removal/installationMazda 6 Service Manual: Dtc b1318
Caution
When attaching the tester lead to the ABS (ABS/TCS) HU/CM harness
connector, the SST (49 G066 001) must be used. (See ABS (ABS/TCS) HU/CM
INSPECTION.)
Diagnostic procedure
...
Mazda 6 Service Manual: Bluetooth® Audio
Applicable Bluetooth® specification (Recommended)
Ver. 1.1/1.2/2.0 EDR/2.1
EDR/3.0 (conformity)
Response profile
A2DP (Advanced Audio Distribution Profile) Ver. 1.0/1.2
AVRCP (Audio/Video Remote Control Profile) Ver. 1.0/1.3/1.4
A2DP is a profile which transmits only audio to the Blue ...