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Pinpoint Test Bi: U1010:00

  1. NOTE: The Secondary Inverter System Controller (S-ISC) is referred to as the SOBDMB (Secondary On-Board Diagnostic Control Module B) in the scan tool.

    Normal Operation and Fault Conditions 

    REFER to: Front Electric Drive Assembly - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    SOBDMB U1010:00 Invalid Internal Control Module Monitoring Data Received from Hybrid Powertrain Control Module: No Sub Type Information This DTC sets when the Secondary Inverter System Controller (S-ISC) (SOBDM-B) reports it is receiving invalid messages from the Inverter System Controller (ISC) (SOBDM-C).

    Possible Sources 

    • Communications network concern
    • SOBDMC
    • SOBDMB

  2. BI1 VERIFY THE CONCERN

    • Ignition ON.

    • Verify there is an observable symptom present.

    Is an observable symptom present? 

    Yes  GO to  BI2
    No  The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. Using the scan tool, clear the Secondary Inverter System Controller (S-ISC) SOBDMBDTCs.

  3. BI2 VERIFY THE DIAGNOSTIC SCAN TOOL COMMUNICATES WITH THE SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC CONTROL MODULE C)

    • Connect the diagnostic scan tool to the vehicle.

    • Attempt to establish a vehicle session using the diagnostic scan tool.

    Can a vehicle session be established? 

    Yes  GO to  BI3
    No  REFER to: Controller Area Network (CAN) Module Communications Network .

  4. BI3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, perform the Secondary Inverter System Controller (S-ISC) SOBDMB self-test.

    Are any non-network DTCs present? 

    Yes  DIAGNOSE all non-network DTCs first. REFER to Diagnostic Trouble Code (DTC) Chart .
    No  GO to  BI4

  5. BI4 CHECK FOR NON-NETWORK SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC CONTROL MODULE C) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, perform the SOBDMC self-test.

    Are any non-network DTCs present? 

    Yes  REFER to Rear Electric Drive Assembly .
    No  GO to  BI5

  6. BI5 CHECK THE SECONDARY INVERTER SYSTEM CONTROLLER (S-ISC) AND SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC CONTROL MODULE C) CALIBRATION LEVELS

    • Verify the Secondary Inverter System Controller (S-ISC) SOBDMB and the SOBDMC are at the latest calibration levels.

    Are the Secondary Inverter System Controller (S-ISC) SOBDMB and the SOBDMC at the latest calibration levels? 

    Yes  GO to  BI6
    No  UPDATE the Secondary Inverter System Controller (S-ISC) SOBDMB or to the latest calibration level.

  7. BI6 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U1010

    • Using the scan tool, clear the Secondary Inverter System Controller (S-ISC) SOBDMBDTCs.

    • Ignition OFF.

    • Ignition ON.

    • Drive the vehicle at speed of 45 mph.

    • Using a diagnostic scan tool, carry out the Secondary Inverter System Controller (S-ISC) SOBDMB self-test.

    Is DTC U1010 the only DTC present? 

    Yes  GO to  BI7
    No  If other DTCs are present, DIAGNOSE any remaining DTCs, REFER to Diagnostic Trouble Code (DTC) Chart . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

  8. BI7 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

    • If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

    • Check the vehicle service history for recent service actions related to the Inverter System Controller (ISC) (SOBDM-C) and Secondary Inverter System Controller (S-ISC) (SOBDM-B). If recent service history is found:

      • Verify correct replacement module was installed, vehicle parts build list may be used to verify correct part fitment.
      • Verify the configuration of replacement module was correct, re-configure module using as-built data if prior configuration is suspect.
      • Verify the module was not obtained from a like vehicle and installed into vehicle with concern, return the swapped module to source vehicle and obtain new replacement module.

    • Operate the system and determine if the observable symptom is still present.

    Is the observable symptom still present? 

    Yes  GO to  BI8
    No  The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

  9. BI8 CHECK FOR CORRECT SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC CONTROL MODULE C) OPERATION

    • Ignition OFF.

    • Disconnect and inspect all the SOBDMC connectors.

    • Repair:

      • Corrosion (install new connector or terminals - clean module pins)
      • Damaged or bent pins - install new terminals/pins
      • Pushed-out pins - install new pins as necessary

    • Reconnect the SOBDMC connectors. Make sure they seat and latch correctly.

    • Ignition ON.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, REFER to: Controller Area Network (CAN) Module Communications Network .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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