MOTOR GENERATOR CONTROL SYSTEM, Diagnostic DTC:P1C5312, P1C5314, P1C531F, P1C5812, P1C5814, P1C581F

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

   • Inverter with converter assembly internal circuit malfunction

   
   
   • Inverter low-voltage circuit malfunction

   • The connectors are not connected properly

DESCRIPTION

The motor generator control ECU (MG ECU), which is built into the inverter with converter assembly, monitors the generator 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. Depress the accelerator pedal of the vehicle with the engine stopped and park (P) selected to start the engine.

9. Select drive (D) and drive the vehicle forward for 5 m (16 ft.) or more.

10. Select reverse (R) and drive the vehicle backward for 5 m (16 ft.) or more.

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

12. 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 (MOTOR GENERATOR)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

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

   4. Check for DTCs.

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

      Result
      Result Proceed to P1C5312, P1C5314, P1C531F, P1C5812, P1C5814 or P1C581F only is output, or DTCs except the ones in the table below are also output. A Any of the following DTCs including pending DTCs are also output. B

      Malfunction Content	Relevant DTC
      Power source circuit malfunction	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
      System malfunction	P0A7A73	Generator Inverter Actuator Stuck Closed

      Tip:
      

      • P1C5312, P1C5314, P1C531F, P1C5812, P1C5814 or P1C581F 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 (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