MOTOR GENERATOR CONTROL SYSTEM, Diagnostic DTC:P0BE928, P0BED28, P1C4928, P1C4E28

DTC SUMMARY

1. MALFUNCTION DESCRIPTION

   These DTCs indicate that the current sensor value is abnormal. The cause of this malfunction may be one of the following:

   
   
   • Internal inverter malfunction

   • Current sensor malfunction

   • Inverter with converter assembly internal circuit malfunction

DESCRIPTION

The motor generator control ECU (MG ECU), which is built into the inverter with converter assembly, monitors the motor inverter current sensor. These DTCs indicate the malfunction of current sensors and do not indicate a malfunction of the high-voltage system.

CONFIRMATION DRIVING PATTERN

1. Connect the GTS to the DLC3.

2. Turn the power switch on (IG) and turn the GTS on.

3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4. Turn the power switch off and wait for 2 minutes or more.

5. Turn the power switch on (IG) and turn the GTS on.

6. With power switch on (IG) and wait for 5 seconds or more.

7. Turn the power switch on (READY) with park (P) selected and wait for 5 seconds or more.

8. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.

9. Check the DTC judgment result.

   Tip:
   

   • If the judgment result shows NORMAL, the system is normal.

   • If the judgment result shows ABNORMAL, the system has a malfunction.

   • If the judgment result shows INCOMPLETE, perform driving pattern again.

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   CHECK DTC OUTPUT

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Enter the following menus: Powertrain / Hybrid Control and Motor Generator / Trouble Codes.

   4. Check for DTCs.

      
      
      1. Powertrain > Hybrid Control > Trouble Codes
      2. 
         
      3. 
         
      
      
      1. Powertrain > Motor Generator > Trouble Codes
      2. 
         
      3. 
         

      Result
      Result Proceed to P0BE928, P0BED28, P1C4928 or P1C4E28 only is output, or DTCs except the ones in the table below are also output. A DTCs of hybrid control system in the table below are output. B DTCs of motor generator control system in the table below are output. C

      Table 1. Table 1

      Malfunction Content	System	Relevant DTC
      Insulation Malfunction	Hybrid control system	P1C7C49	Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure
      		P1C7D49	Hybrid/EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure
      		P1C7E49	Hybrid/EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure
      		P1C7F49	Hybrid/EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure
      High voltage system malfunction	Hybrid control system	P0AA649	Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure

      Table 2. Table 2

      Malfunction Content	System	Relevant DTC
      Microcomputer malfunction	Hybrid control system	P0A1B49	Drive Motor "A" Control Module Internal Electronic Failure
      	Motor generator control system	P1C2B1C	Drive Motor "A" Control Module A/D Converter Circuit Voltage Out of Range
      		P1C2B49	Drive Motor "A" Control Module A/D Converter Circuit Internal Electronic Failure
      		P312487	Lost Communication between Drive Motor "A" and HV ECU Missing Message
      Power source circuit malfunction	Motor generator control system	P06B01C	Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range
      		P06D61C	Generator Control Module Offset Power Circuit Voltage Out of Range
      Sensor and actuator circuit malfunction	Motor generator control system	P0A3F16	Drive Motor "A" Position Sensor Circuit Voltage Below Threshold
      		P0A3F21	Drive Motor "A" Position Sensor Signal Amplitude < Minimum
      		P0A3F22	Drive Motor "A" Position Sensor Signal Amplitude > Maximum
      		P0C5013	Drive Motor "A" Position Sensor Circuit "A" Circuit Open
      		P0C5016	Drive Motor "A" Position Sensor Circuit "A" Circuit Voltage Below Threshold
      		P0C5017	Drive Motor "A" Position Sensor Circuit "A" Circuit Voltage Above Threshold
      		P0C5A13	Drive Motor "A" Position Sensor Circuit "B" Circuit Open
      		P0C5A16	Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Below Threshold
      		P0C5A17	Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Above Threshold
      		P0D2D16	Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Below Threshold
      		P0D2D17	Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Above Threshold
      		P1CAD49	Drive Motor "A" Position Sensor Internal Electronic Failure
      		P1CB038	Drive Motor "A" Position Sensor REF Signal Frequency Incorrect
      System malfunction	Motor generator control system	P0A7873	Drive Motor "A" Inverter Actuator Stuck Closed

      Tip:
      

      • P0BE928, P0BED28, P1C4928 or P1C4E28 may be output as a result of the malfunction indicated by the DTCs above.

      • 
        

        1. The chart above is listed in inspection order of priority.

        2. Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)

   5. Turn the power switch off.

   
   
   • AClick here
   • B

     GO TO DTC CHART (HYBRID CONTROL SYSTEM)Click here

   • C

     GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM)Click here

2. Click here

   CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)

   Result
   Result Proceed to OK A NG (The connector is not connected securely.) B NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

   CAUTION:

   Be sure to wear insulated gloves.

   
   

   1. Check that the service plug grip is not installed.

      Note:

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

   2. 

      *A

      for LHD

      *B

      for RHD

      Check the connection condition of the low voltage connectors of the inverter with converter assembly and the contact pressure of each terminal. Check the terminals for deformation, and the connector for water and foreign matter.

      Click here

      Note:

      Before disconnecting the connector, confirm that it is properly connected by checking that the claws of the lock levers are engaged and that the connector cannot be pulled off.

      OK
      - The connector is connected securely.
      - The terminals are not deformed and are connected securely.
      - No water or foreign matter in the connector.

      Result
      Result Proceed to OK A NG (The connector is not connected securely.) B NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

      Tip:

      When connecting the connector, connect it with the lock levers raised. Rotate each lock lever downward and make sure that the connector is securely connected. When a lock lever is fully lowered, a click will be heard as its claw engages. After the click is heard, pull up on the connector to confirm that it is securely connected.

   
   
   • A

     REPLACE INVERTER WITH CONVERTER ASSEMBLYClick here

   • B

     CONNECT SECURELY

   • C

     REPAIR OR REPLACE HARNESS OR CONNECTOR