HYBRID CONTROL SYSTEM, Diagnostic DTC:P0338-885

DTC Code DTC Name
P0338-885 Crankshaft Position Sensor "A" Circuit High Input

DESCRIPTION


DTC No. INF Code DTC Detection Condition Trouble Area
P0338 885 Malfunction in the engine speed sensor (NEI signal) circuit
  • Wire harness or connector

  • Hybrid vehicle control ECU

  • ECM

  • Crankshaft position sensor

WIRING DIAGRAM

A000Y0KE03

PROCEDURE


  1. CHECK DTC OUTPUT (ENGINE CONTROL SYSTEM)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      Engine control system DTCs are not output. A
      Engine control system DTCs are output. B

    B
    A
  2. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)


    1. A000XH7E01
      *1 Hybrid Vehicle Control ECU

      Check the connections of the hybrid vehicle control ECU connectors.

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

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


    1. A000UQHE01

      Check the connections of the ECM connectors.

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

    NG
    OK
  4. CHECK HYBRID VEHICLE CONTROL ECU (CHECK WAVEFORM)


    1. A000Y2IE01
      *1 Component with harness connected: (Hybrid Vehicle Control ECU)
      *2 NEI

      Connect an oscilloscope between the hybrid vehicle control ECU terminals specified in the table below, and measure the waveform.

      Item Contents
      Terminal A77-13 (NEI) - A77-7 (E1)
      Equipment Setting 5 V/DIV., 1 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
    C
    A
  5. CHECK FOR INTERMITTENT PROBLEMS


    1. Check for intermittent problems Click here.


    OK
    NG
  6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ECM)


    1. Turn the power switch off.

    2. Disconnect connector A77 from the hybrid vehicle control ECU.

    3. Disconnect connector A14 from the ECM.

    4. Turn the power switch on (IG).

    5. A000YDJE01
      *1 Rear view of wire harness connector: (to Hybrid Vehicle Control ECU)
      *2 NEI
      *3 Rear 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
      A77-13 (NEI) - Body ground Power switch on (IG) Below 1 V

      Note

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

    6. Turn the power switch off.

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      A77-13 (NEI) - A14-27 (NEO1) Power switch off Below 1 Ω

    OK
    NG
  7. CHECK HYBRID VEHICLE CONTROL ECU


    1. Turn the power switch off.

    2. Disconnect connector A14 from the ECM.

    3. Turn the power switch on (IG).

    4. A000ZCWE01
      *1 Rear 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
      A14-27 (NEO1) - Body ground Power switch on (IG) 10 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.


    NG
    OK
  8. CHECK ECM


    1. Turn the power switch off.

    2. Connect connector A14 to the ECM.

    3. A000X87E01
      *1 Rear view of wire harness connector: (to Hybrid Vehicle Control ECU)
      *2 NEI

      Disconnect connector A77 from the hybrid vehicle control ECU.

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      A77-13 (NEI) - A77-7 (E1) Power switch off 10 kΩ or higher

    NG
    OK
  9. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ECM)


    1. A000YDJE01
      *1 Rear view of wire harness connector: (to Hybrid Vehicle Control ECU)
      *2 NEI
      *3 Rear view of wire harness connector: (to ECM)

      Disconnect connector A14 from the ECM.

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      A77-13 (NEI) or A14-27 (NEO1) - Body ground Power switch off 10 kΩ or higher

    OK
    NG