Rear Mount Camera Inspection

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5] .)
Remove the following parts:
1. Trunk lid recess (See TRUNK LID RECESS REMOVAL/INSTALLATION .)
2. Trunk lid trim (See TRUNK LID TRIM REMOVAL/INSTALLATION .)
3. Rear mount camera (See REAR MOUNT CAMERA REMOVAL/INSTALLATION .)
Prepare four dry cell batteries (1.5 V)
Connect the four dry cell batteries in a series.

Fig 1: Identifying Batteries Dry Cell
Courtesy of MAZDA MOTORS CORP.
Connect the positive pole of the dry cell battery to rear mount camera terminal A, and the negative pole to terminal E.
With the cell batteries being connected, measure the waveform between rear mount camera terminal D and terminal C.

Fig 2: Connecting Positive Pole Of Dry Cell Battery To Rear Mount Camera Terminal A And E
Courtesy of MAZDA MOTORS CORP.
Verify that waveform A shown in the figure is displayed two times or more.
If the voltage is not as shown in the figure, replace the rear mount camera.

Fig 3: Rear Mount Camera Waveform A
Courtesy of MAZDA MOTORS CORP.