Circuit/System Testing

Circuit/System Testing DTC B0203 47, 49, 82

1. Replace the component: B225L Side View Driver Information Camera - Left
2. Verify the DTC does not set.
   • If the DTC is not set 

     All OK.

   • Go to next step: If the DTC sets 
3. Replace the component: K124 Image Processing Module

Circuit/System Testing DTC B0203 1C

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: X2 @ K124 Image Processing Module
3. Wait for greater than 5 s.
4. Connect appropriate EL-52552 pinout tool to K124 Image Processing Module
5. Ignition/Vehicle - On
6. Test for 7 to 11 V between the test points: Signal circuit terminal 2 VT @ K124 Image Processing Module & Ground (component side)
   • If not between 7 and 11 V 

     Replace the component: K124 Image Processing Module

   • Go to next step: If between 7 and 11 V 
7. Ignition/Vehicle & All vehicle systems - Off
NOTE:

Before testing the coax cable, check the cable's exterior for being pinched, cut, damaged, or having loose connections at the components, all of which can cause reception issues.

8. Disconnect the electrical connector: B225L Side View Driver Information Camera - Left
9. Locate the appropriate pinout adapter and load test loop adapter from EL-52552 COAX FAKRA Cable Adaptor Kit.
10. Connect the 2 adapters together, measure and record the resistance between the terminals at the pinout adapter.
11. Disconnect the 2 adapters and connect each one to the appropriate end of the coax cable.
12. At the pinout adapter test terminals, measure the total resistance of the coax cable loop including the connected load test adapter.
    • If not within 5 Ω of the reading from step 10. 

      Replace the coax cable

    • Go to next step: If within 5 Ω of the reading from step 10. 
13. Replace the component: B225L Side View Driver Information Camera - Left
14. Apply the parking brake.
15. Ignition/Vehicle - On - Transmission in Reverse
16. Verify the DTC does not set.
    • If the DTC is set 

      Replace the component: K124 Image Processing Module

    • Go to next step: If the DTC is not set 
17. All OK.

Circuit/System Testing DTC B0203 4B

NOTE:

DTC B0203 4B can set due to extreme environment temperature conditions and not necessarily due to a camera system defect.

1. Ignition - On/Vehicle - In Service Mode
2. Place vehicle in an area where a ambient temperature is 15 - 25° C (59 - 77° F) with engine OFF.
3. Wait at least 30 minutes.
4. Verify DTC B0203 4B is not set
   • If DTC B0203 4B is not set 

     All OK.

   • Go to next step: If DTC B0203 4B is set 
5. Replace the component: B225L Side View Driver Information Camera - Left
6. Verify DTC B0203 4B is not set
   • If DTC B0203 4B is not set 

     All OK.

   • Go to next step: If DTC B0203 4B is set 
7. Replace the component: K124 Image Processing Module

Circuit/System Testing DTC B0203 54, 57

1. Ignition/Vehicle - On
2. Ensure the Surround Vision System is fully calibrated. Refer to: Surround Vision Camera Calibration (cameras wired to K124 Image Processing Module) , or Surround Vision Camera Calibration (cameras wired to A11 Radio) 
3. Verify the DTC does not set.
   • If the DTC is not set 

     All OK.

   • Go to next step: If the DTC sets 
4. Operate the vehicle under the following conditions:
   • During the day
   • On a straight road
   • Distance Traveled = Greater than 0.5 km (0.3 mi)
5. Ignition/Vehicle & All vehicle systems - Off
6. Wait for greater than 60 s.
7. Ignition/Vehicle - On
8. Verify the DTC does not set.
   • If the DTC is not set 

     All OK.

   • Go to next step: If the DTC sets 
9. Test or replace the component: B225L Side View Driver Information Camera - Left
10. Verify the DTC does not set.
    • If the DTC is not set 

      All OK.

    • Go to next step: If the DTC sets 
11. Test or replace the component: K124 Image Processing Module