DTC B2233: Front Camera Circuit Open

DTC detecting condition: 

Detected when front camera abnormality is detected.

Trouble symptom: 

Front camera does not work.

Wiring diagram: 

Front view monitoring system Ref. to WIRING SYSTEM>FRONT VIEW MONITOR>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK DTC. 
   1. Using the Subaru Select Monitor, perform the clear memory of [Multi-Function Display]. Ref. to COMMON (diag)>CLEAR MEMORY .
   2. Turn the ignition switch to OFF.
   3. Disconnect the MFD connector and reconnect it.
   4. Turn the ignition switch to ON.
   5. Read the DTC of [Multi-Function Display] using the Subaru Select Monitor. Ref. to MULTIFUNCTION DISPLAY (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   Is DTC B2233 displayed? (Current malfunction)

   Yes  : Go to  2.

   No  : Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

   NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
2. CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY). 
   1. Disconnect the front camera connector and MFD connector.
   2. Turn the ignition switch to ON.
   3. Using a tester, measure the voltage between the MFD connector and chassis ground.

      Connector and terminal 

      (i122) No. 2 (+) - Chassis ground (-):

   Is the voltage 1.5 V or less?

   Yes  : Go to  3.

   No  : Repair or replace the short circuit of the harness.

3. CHECK HARNESS (OPEN CIRCUIT). 

   Using a tester, measure the resistance between front camera connector and MFD connector.

   Connector and terminal 

   (i122) No. 2 - (F166) No. 2:

   Is the resistance less than 10 Ω?

   Yes  : Go to  4.

   No  : Repair or replace the open circuit of harness.

4. CHECK DTC. 
   1. Replace the front camera. Ref. to ENTERTAINMENT & MONITORING>CAMERA>REMOVAL>FRONT .
   2. Read the DTC of [Multi-Function Display] using the Subaru Select Monitor. Ref. to MULTIFUNCTION DISPLAY (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   Is DTC B2233 displayed? (Current malfunction)

   Yes  : Replace the MFD. Ref. to INSTRUMENTATION/DRIVER INFO>MULTI-FUNCTION DISPLAY (MFD) .

   No  : Malfunction occurred in the front camera.