HYBRID CONTROL SYSTEM, Diagnostic DTC:P0343-747

DTC Code DTC Name
P0343-747 Camshaft Position Sensor "A" Circuit High Input

DESCRIPTION

Refer to the description for DTC P0340-886 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P0343 747 GI signal is not input for 2 sec. or more while the engine is running.
  • SFI system

  • Inverter with converter assembly

  • ECM

  • Power management control ECU

  • Wire harness or connector

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0340-886 Click here.

INSPECTION PROCEDURE

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

    Tech Tips

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the power switch on (READY).

  2. With the vehicle stopped, push the P position switch (transmission shift main switch).

  3. Depress the accelerator pedal to start the engine.

  4. Depress the accelerator pedal and maintain the engine speed at 1000 rpm or more for 5 seconds or more.

PROCEDURE


  1. CHECK DTC OUTPUT (ENGINE CONTROL SYSTEM)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Engine and ECT/ Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      Engine control system DTCs are not output. A
      Any of the following DTCs are output. B
      DTC No. Relevant Diagnosis
      P0340 Camshaft Position Sensor Circuit Malfunction
      P0342 Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor)
      P0343 Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor)
    5. Turn the power switch off.


    B
    A
  2. CHECK DTC OUTPUT (HV)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Check if DTCs are output.

      Result
      Result Proceed to
      None of the following DTCs are output. A
      Any of the following DTCs are output. B
      DTC No. Relevant Diagnosis
      P0A1B (all INF codes)*1 Drive Motor "A" Control Module

      Tech Tips


      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.

      • P0343-747 may be set due to a malfunction which also causes the DTCs in the preceding table to be set. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.

    5. Turn the power switch off.


    B
    A
  3. CHECK DTC OUTPUT (HV)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Check if DTCs are output.

      Result
      Result Proceed to
      P0340-886 is not output. A
      P0340-886 is also output. B
    5. Turn the power switch off.


    B
    A
  4. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)

    CAUTION:

    Be sure to wear insulated gloves.


    1. A01JCYY

      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.

      Note

      Before disconnecting the connector, confirm that it is properly connected by checking that the locking claws are engaged and that the connector does not pull out.

    2. Check the connection of the low voltage connector of the inverter with converter assembly.

      OK
      The connector is connected securely and there are no contact problems.

      Tech Tips

      When connecting the connector, insert it with the locking lever in the raised position. Rotate the lever downward and make sure that the connector is pulled into its socket. When the locking lever is in its fully closed position, a click will be heard as its locking claws engage. After the click is heard, pull up on the connector to confirm that it is properly connected.


    NG
    OK
  5. CHECK CONNECTOR CONNECTION CONDITION (ECM CONNECTOR)


    1. A01JD14

      Check the connections of the ECM connectors.

      OK
      The connectors are connected securely and there are no contact problems.

    NG
    OK
  6. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - ECM)

    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. Disconnect the low voltage connector A59 from the inverter with converter assembly.

    3. Disconnect connector D28 from the ECM.

    4. Disconnect connector A21 from the power management control ECU.

    5. Turn the power switch on (IG).

    6. A01JD2YE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

      *2

      Front view of wire harness connector

      (to ECM)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A59-29 (GI) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the inverter with converter assembly connector and ECM connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    7. Turn the power switch off.

    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      A59-29 (GI) - D28-48 (G2O) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      A59-29 (GI) or D28-48 (G2O) - Body ground and other terminals Power switch off 10 kΩ or higher
    9. Connect the power management control ECU connector.

    10. Connect the ECM connector.

    11. Connect the inverter with converter assembly connector.


    NG
    OK
  7. CHECK CONNECTOR CONNECTION CONDITION (ECM CONNECTOR)


    1. A01JD14

      Check the connections of the ECM connectors.

      OK
      The connectors are connected securely and there are no contact problems.

    NG
    OK
  8. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - ECM)

    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. Disconnect the low voltage connector A59 from the inverter with converter assembly.

    3. Disconnect connector D28 from the ECM.

    4. Disconnect connector A21 from the power management control ECU.

    5. A01JD2YE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

      *2

      Front view of wire harness connector

      (to ECM)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      A59-29 (GI) - D28-48 (G2O) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      A59-29 (GI) or D28-48 (G2O) - Body ground and other terminals Power switch off 10 kΩ or higher
    6. Connect the power management control ECU connector.

    7. Connect the ECM connector.

    8. Connect the inverter with converter assembly connector.


    NG
    OK
  9. CHECK HARNESS AND CONNECTOR (ECM - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect connector D28 from the ECM.

    2. Disconnect connector A21 from the power management control ECU.

    3. Disconnect the low voltage connector A59 from the inverter with converter assembly.

    4. A01JB75E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to ECM)

      *2

      Rear view of wire harness connector

      (to Power Management Control ECU)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      D28-48 (G2O) - A21-16 (GI) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      D28-48 (G2O) or A21-16 (GI) - Body ground and other terminals Power switch off 10 kΩ or higher
    5. Connect the inverter with converter assembly connector.

    6. Connect the power management control ECU connector.

    7. Connect the ECM connector.


    NG
    OK
  10. CHECK INVERTER WITH CONVERTER ASSEMBLY

    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. Disconnect the low voltage connector A59 from the inverter with converter assembly.

    3. A01JB6LE02
      Text in Illustration
      *1

      Component without harness connected

      (Inverter with Converter Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A59-29 (GI) - A59-28 (GND1) Power switch off 10 kΩ or higher
    4. Connect the inverter with converter assembly connector.


    NG
    OK
  11. CHECK POWER MANAGEMENT CONTROL ECU


    1. Disconnect connectors A21 and L5 from the power management control ECU.

    2. A01J8V6E05
      Text in Illustration
      *1

      Component without harness connected

      (Power Management Control ECU)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A21-16 (GI) - L5-6 (E1) Power switch off 10 kΩ or higher
    3. Connect the power management control ECU connector.


    NG
    OK