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Circuit/System Verification

  1. Ignition ON. Radio ON.
  2. Verify DTC U0100-U02FF is set.
    • If the DTC is not set 
  3. Verify DTC U2098 or DTC U0029 02 is set.
    • If any of the DTCs are set 

      Refer to DTC U2098 .

    • If none of the DTCs are set 
  4. Verify DTC U0028 is set.
    • If the DTC is set 
    1. Access the A11 Radio's Last Working MOST ID of Node 1-9 parameters with a scan tool to view MOST device location IDs and MOST bus configuration.
    2. Access the A11 Radio's Surrogate MOST Master Node Upstream Position parameter with a scan tool to determine the surrogate MOST Master device and where the MOST ring break occurs. For more information, refer to Diagnostic Aids  section.
    3. Refer to Circuit/System Testing .
    • If the DTC is not set 
  5. All OK.
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