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HYBRID CONTROL SYSTEM, Diagnostic DTC:P0340-886

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Info Added 2017-08-02

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

The hybrid vehicle control ECU assembly 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 assembly 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

  • Camshaft position sensor

  • Inverter with converter assembly

  • ECM

  • Hybrid vehicle control ECU assembly
Table 1. *a Camshaft Position Sensor *b Hybrid Vehicle Control ECU Assembly *c Inverter with Converter Assembly
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WIRING DIAGRAM

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

    Tip:

    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).

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PROCEDURE


  1. Click here

    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 for DTCs.

      Result
      Result Proceed to
      P0340-886 only is output. A
      P0343-747 is also output. B

    5. Turn the power switch off.


  2. Click here

    CHECK CONNECTOR CONNECTION CONDITION (ECM CONNECTOR)


    1. A0006DP

      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.
      Tip:

      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.


  3. Click here

    CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)


    1. A0005OEE01

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

      Table 2. Text in Illustration
      *A for LHD
      *B for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.

  4. Click here

    CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY (CHECK WAVEFORM)


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

    2. Turn the power switch on (READY).

    3. A0008Q4E02

      Measure the waveform.

      Item Content
      Terminal A78-10 (GI) - H211-6 (E1)
      Equipment Setting 5 V/DIV., 20 ms./DIV.
      Condition Power switch on (READY) with engine running
      Table 3. Text in Illustration
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU Assembly)
      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

    4. Turn the power switch off.


  5. Click here

    CHECK FOR INTERMITTENT PROBLEMS

    (Click here)


    • OK

      REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY (Click here)

    • NG

      REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  6. Click here

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU 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 A22 ECM connector.

    3. Disconnect the A14 inverter with converter assembly connector.

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

    5. Turn the power switch on (IG).

    6. A0005ZRE03

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A22-60 (G2O) - Body ground Power switch on (IG) 11 to 14 V
      Table 4. Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)
      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 A14 inverter with converter assembly connector.

    10. Reconnect the A22 ECM connector.


    • OK

      REPLACE ECM (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

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

    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 A22 ECM connector.

    3. Disconnect the A78 hybrid vehicle control ECU assembly connector.

    4. Disconnect the A14 inverter with converter assembly connector.

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

    6. Turn the power switch on (IG).

    7. A0004FPE02

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A22-60 (G2O) or A78-10 (GI) - Body ground Power switch on (IG) Below 1 V
      Table 5. Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)
      *b

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      Note:

      Turning the power switch on (IG) with the inverter with converter assembly connector, hybrid vehicle control ECU assembly 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
      A22-60 (G2O) or A78-10 (GI) - Body ground Power switch off 10 kΩ or higher

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

    11. Reconnect the A22 ECM connector.

    12. Reconnect the A78 hybrid vehicle control ECU assembly connector.

    13. Reconnect the A14 inverter with converter assembly connector.


    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. Click here

    CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY


    1. Disconnect the A78, A79, H211 and H212 hybrid vehicle control ECU assembly connectors.

    2. A0005ITE02

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A78-10 (GI) - H211-6 (E1) Power switch off 10 kΩ or higher
      Table 6. Text in Illustration
      *a

      Component without harness connected

      (Hybrid Vehicle Control ECU Assembly)

    3. Reconnect the A78, A79, H211 and H212 hybrid vehicle control ECU assembly connectors.


  9. Click here

    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 A14 inverter with converter assembly connector.

    3. A0009QWE03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A14-1 (GI) - A14-10 (GND1) Power switch off 10 kΩ or higher
      Table 7. Text in Illustration
      *a

      Component without harness connected

      (Inverter with Converter Assembly)

    4. Reconnect the A14 inverter with converter assembly connector.