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    DTC P0340/12 Engine Speed Sensor Circuit 1 (TDC or G1 Circuit)

    Uploaded by

    Andi Ka
    The document provides troubleshooting steps for diagnosing a P0340/12 engine speed sensor circuit error code. It describes the circuit, lists the detection condition as no tdc signal to the ECU at 400 rpm or more, and identifies potential trouble areas as an open or short in the crankshaft position sensor circuit. It includes waveforms for the tdc and ne signals as a reference and outlines an inspection procedure to check the sensor resistance, inspect the harness and connectors for opens and shorts, inspect the sensor installation, and check or replace the engine ECU if needed.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    DTC P0340/12 Engine Speed Sensor Circuit 1 (TDC or G1 Circuit)

    Uploaded by

    Andi Ka
    3K views2 pages
    The document provides troubleshooting steps for diagnosing a P0340/12 engine speed sensor circuit error code. It describes the circuit, lists the detection condition as no tdc signal to the ECU at 400 rpm or more, and identifies potential trouble areas as an open or short in the crankshaft position sensor circuit. It includes waveforms for the tdc and ne signals as a reference and outlines an inspection procedure to check the sensor resistance, inspect the harness and connectors for opens and shorts, inspect the sensor installation, and check or replace the engine ECU if needed.

    Original Description:

    Jjhj

    Original Title

    m_di_0059

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    The document provides troubleshooting steps for diagnosing a P0340/12 engine speed sensor circuit error code. It describes the circuit, lists the detection condition as no tdc signal to the ECU at 400 rpm or more, and identifies potential trouble areas as an open or short in the crankshaft position sensor circuit. It includes waveforms for the tdc and ne signals as a reference and outlines an inspection procedure to check the sensor resistance, inspect the harness and connectors for opens and shorts, inspect the sensor installation, and check or replace the engine ECU if needed.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    3K views2 pages

    DTC P0340/12 Engine Speed Sensor Circuit 1 (TDC or G1 Circuit)

    Uploaded by

    Andi Ka
    The document provides troubleshooting steps for diagnosing a P0340/12 engine speed sensor circuit error code. It describes the circuit, lists the detection condition as no tdc signal to the ECU at 400 rpm or more, and identifies potential trouble areas as an open or short in the crankshaft position sensor circuit. It includes waveforms for the tdc and ne signals as a reference and outlines an inspection procedure to check the sensor resistance, inspect the harness and connectors for opens and shorts, inspect the sensor installation, and check or replace the engine ECU if needed.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    DI−59

    DIAGNOSTICS − ENGINE
    DIDYF−01

    DTC P0340/12 Engine Speed Sensor Circuit 1 (TDC or G1


    Circuit)

    CIRCUIT DESCRIPTION
    Refer to DTC P0335/13 on page DI−56.
    DTC No. DTC Detection Condition Trouble Area
    S Open or short in crankshaft position sensor circuit
    P0340/12 No TDC signal to engine ECU at 400 rpm or more S Crankshaft position sensor
    S Engine ECU

    TDC and NE Signal Waveforms Reference: INSPECTION USING OSCILLOSCOPE


    2 V/DIV. During cranking or idling, check between terminals TDC+ and
    TDC− of the engine ECU.
    TDC
    HINT:
    The correct waveforms are as shown.

    NE

    20 msec./Division (Idling) A23898

    WIRING DIAGRAM
    Refer to DTC P0335/13 on page DI−56.

    INSPECTION PROCEDURE

    1 Check resistance of crankshaft position sensor (TDC) (See Pub No. RM617E,
    page ED−8).

    NG Replace crankshaft position sensor.

    OK

    2 Check for open and short in harness and connector between engine ECU and
    crankshaft position sensor (See page IN−19).

    NG Repair or replace harness or connector.

    OK

    1HD−FTV ENGINE SUP (RM1179E)


    DI−60
    DIAGNOSTICS − ENGINE

    3 Inspect sensor installation.

    NG Tighten sensor.

    OK

    Check and replace engine ECU (See page


    IN−19).

    1HD−FTV ENGINE SUP (RM1179E)

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