HYBRID CONTROL SYSTEM, Diagnostic DTC:P0340-886

DTC Code DTC Name
P0340-886 Camshaft Position Sensor "A" Circuit

DESCRIPTION

The hybrid vehicle control ECU compares the engine speed sent from the ECM via CAN communication and the engine speed that is indicated by pulses sent from the ECM. If the pulse input is not normal, the hybrid vehicle control ECU sets this DTC.

DTC No. INF Code DTC Detection Condition Trouble Area
P0340 886 Malfunction in the engine speed sensor (GI signal) circuit

  • Wire harness or connector

  • No. 1 crank position sensor (Camshaft position sensor)

  • Inverter with converter assembly

  • ECM

  • Hybrid vehicle control ECU

WIRING DIAGRAM

B005XPZE10
*1 No. 1 Crank Position Sensor (Camshaft Position Sensor)
*2 Hybrid Vehicle Control ECU
*3 Inverter with Converter Assembly

CAUTION / NOTICE / HINT

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 removing 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 of the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work Click here.

    Tech Tips

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

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

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 (HYBRID CONTROL)


    1. Connect the GTS 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 only is output. A
      P0343-747 is also output. B

    5. Turn the power switch off.


    B

    CHECK HARNESS AND CONNECTOR (ECM - HYBRID VEHICLE CONTROL ECU, INVERTER WITH CONVERTER ASSEMBLY) Click here

    A

  2. CHECK CONNECTOR CONNECTION CONDITION (ECM CONNECTOR)


    1. B005YJE

      Check the connector connections and contact pressure of the relevant terminals for the ECM connectors Click here.

      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.

      OK
      The connectors are connected securely and there are no contact pressure 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

    CONNECT SECURELY

    OK

  3. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)


    1. Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU connectors Click here.

      B005ZP3E01
      Text in Illustration
      *A for LHD *B for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.

    NG

    CONNECT SECURELY

    OK

  4. CHECK HYBRID VEHICLE CONTROL ECU (CHECK WAVEFORM)


    1. Connect an oscilloscope between the hybrid vehicle control ECU terminals specified in the table below.

    2. Turn the power switch on (READY).

    3. B005YOXE02
      Text in Illustration
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU)

      Measure the waveform.

      Item Content
      Terminal A21-10 (GI) - L5-6 (E1)
      Equipment Setting 5 V/DIV., 20 ms./DIV.
      Condition Power switch on (READY) with engine running
      Result
      Result Proceed to
      Normal A
      Waveform is flat, and is stuck on the +B side. B
      Waveform is flat, and is stuck on the GND side. C

    B

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU) Click here

    C

    CHECK HARNESS AND CONNECTOR (ECM - HYBRID VEHICLE CONTROL ECU, INVERTER WITH CONVERTER ASSEMBLY) Click here

    A

  5. CHECK FOR INTERMITTENT PROBLEMS

    Click here


    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU)

    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 D28 ECM connector.

    3. Disconnect the A59 inverter with converter assembly connector.

    4. Connect the cable to the negative (-) auxiliary battery terminal.

    5. Turn the power switch on (IG).

    6. B005YMDE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      D28-48 (G2O) - Body ground Power switch on (IG) 11 to 14 V

      Note

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

    7. Turn the power switch off.

    8. Disconnect the cable from the negative (-) auxiliary battery terminal.

    9. Reconnect the A59 inverter with converter assembly connector.

    10. Reconnect the D28 ECM connector.


    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. CHECK HARNESS AND CONNECTOR (ECM - HYBRID VEHICLE CONTROL ECU, 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 D28 ECM connector.

    3. Disconnect the A21 hybrid vehicle control ECU connector.

    4. Disconnect the A59 inverter with converter assembly connector.

    5. Connect the cable to the negative (-) auxiliary battery terminal.

    6. Turn the power switch on (IG).

    7. B005YA3E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)
      *b

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      D28-48 (G2O) or A21-10 (GI) - Body ground Power switch on (IG) Below 1 V

      Note

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

    8. Turn the power switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D28-48 (G2O) or A21-10 (GI)- Body ground Power switch off 10 kΩ or higher

    10. Disconnect the cable from the negative (-) auxiliary battery terminal.

    11. Reconnect the D28 ECM connector.

    12. Reconnect the A21 hybrid vehicle control ECU connector.

    13. Reconnect the A59 inverter with converter assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HYBRID VEHICLE CONTROL ECU


    1. Disconnect all the connectors from the hybrid vehicle control ECU.

    2. B005YMOE02
      Text in Illustration
      *a

      Component without harness connected

      (Hybrid Vehicle Control ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A21-10 (GI) - L5-6 (E1) Always 10 kΩ or higher

    3. Reconnect the hybrid vehicle control ECU connectors.


    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

  9. 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 A59 inverter with converter assembly connector.

    3. B005XW2E03
      Text in Illustration
      *a

      Component without harness connected

      (Inverter with Converter Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A59-29 (GI) - A59-28 (GND1) Power switch off 10 kΩ or higher

    4. Reconnect the A59 inverter with converter assembly connector.


    OK

    REPLACE ECM Click here

    NG

    REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS Click here