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Home >> Mazda >> 2021 >> 6 Signature >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> On-Board Diagnostic - 360DEGREES View Monitor Control Module >> DTC B12BD-00: Rear Mount Camera Malfunction [360°View Monitor Control Module] >> Diagnostic Procedure
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Diagnostic Procedure

DTC B12BD:00 [360°VIEW MONITOR CONTROL MODULE] DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY OTHER 360°VIEW MONITOR CONTROL MODULE DTCs
Yes Replace the 360°view monitor control module, then go to Step 8.
(See 360°VIEW MONITOR CONTROL MODULE REMOVAL/INSTALLATION .)
No Go to the next step.
2 INSPECT 360°VIEW MONITOR CONTROL MODULE CONNECTOR CONDITION
  • Switch the ignition off.
  • Disconnect the negative battery terminal.

    (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)

  • Disconnect the 360°view monitor control module connector.
  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
  • Is the connector normal?
Yes Go to the next step.
No Repair or replace the connector, then go to Step 8.
3 INSPECT REAR MOUNT CAMERA CONNECTOR CONDITION
  • Disconnect the rear mount camera connector.
  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
  • Is the connector normal?
Yes Go to the next step.
No Repair or replace the connector, then go to Step 8.
4 INSPECT REAR MOUNT CAMERA CIRCUIT FOR SHORT TO GROUND
  • Verify that the rear mount camera and 360°view monitor control module connectors are disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side) and body ground:
    • Rear mount camera terminal A
  • Is there continuity?
Yes Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • 360°view monitor control module terminal W-Rear mount camera terminal A

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
  • Repair or replace the malfunctioning part.

    If there is no common connector:

  • Repair or replace the wiring harness which has a short to ground.

Go to Step 8.
No Go to the next step.
5 INSPECT REAR MOUNT CAMERA CIRCUIT FOR SHORT TO POWER SUPPLY
  • Verify that the rear mount camera and 360°view monitor control module connectors are disconnected.
  • Connect the negative battery terminal.

    (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)

  • Switch the ignition ON (engine off or on).
  • Measure the voltage at the following terminals (wiring harness-side):
    • Rear mount camera terminal A
  • Is the voltage 0 V?
Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • 360°view monitor control module terminal W-Rear mount camera terminal A

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
  • Repair or replace the malfunctioning part.

    If there is no common connector:

  • Repair or replace the wiring harness which has a short to power supply.

Go to Step 8.
6 INSPECT REAR MOUNT CAMERA CIRCUIT FOR OPEN CIRCUIT
  • Switch the ignition off.
  • Disconnect the negative battery terminal.

    (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)

  • Verify that the rear mount camera and 360°view monitor control module connectors are disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side):
    • 360°view monitor control module terminal W-Rear mount camera terminal A
  • Is there continuity?
Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • 360°view monitor control module terminal W-Rear mount camera terminal A

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
  • Repair or replace the malfunctioning part.

    If there is no common connector:

  • Repair or replace the wiring harness which has an open circuit.

Go to Step 8.
7 INSPECT REAR MOUNT CAMERA
Yes Go to the next step.
No Replace the rear mount camera, then go to the next step.
(See REAR MOUNT CAMERA REMOVAL/INSTALLATION .)
8 VERIFY THAT REPAIRS HAVE BEEN COMPLETED
Yes Repeat the inspection from Step 1.

Go to the next step.
No Go to the next step.
9 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [360°VIEW MONITOR CONTROL MODULE] .)
No DTC troubleshooting completed.