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Home >> Toyota >> 2008 >> Matrix Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control System (1ZZ-FE) >> SFI System >> DTC P0351 Ignition Coil "A" Primary / Secondary Circuit; DTC P0352 Ignition Coil "B" Primary / Secondary Circuit; DTC P0353 Ignition Coil "C" Primary / Secondary Circuit; DTC P0354 Ignition Coil "D" Primary / Secondary Circuit >> Inspection Procedure

Inspection Procedure

HINT:

Read freeze frame data using Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

  1. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354) 
    1. Connect Techstream to the DLC3.
    2. Turn the ignition switch to the ON position.
    3. Turn the tester on.
    4. Clear DTCs (See DTC CHECK / CLEAR  ).
    5. Shuffle arrangement of the ignition coils with igniters (among No. 1 to No. 4 cylinders).
      NOTE: Do not shuffle the connectors.
    6. Perform a simulation test.
    7. Check DTCs displayed on the tester.

      Result 

      DTC RESULT DESCRIPTION CHART

      Display (DTC Output) Proceed to
      P0351, P0352, P0353 or P0354 A
      Any other DTCs B

    B : REPLACE IGNITION COIL ASSEMBLY 

    A: Go to Next Step 

  2. INSPECT ECM (IGT1, IGT2, IGT3, IGT4 AND IGF1 SIGNAL) 
    1. Inspect the ECM using an oscilloscope.
      1. While cranking or idling, check the waveform between the terminals of the E3 ECM connector.

        Standard 

        TESTER CONNECTIONS AND SPECIFIED CONDITIONS

        Tester Connections Specified Conditions
        IGT1 (E3-8) - E1 (E3-5) Correct waveform is as shown
        IGT2 (E3-9) - E1 (E3-5) Correct waveform is as shown
        IGT3 (E3-10) - E1 (E3-5) Correct waveform is as shown
        IGT4 (E3-11) - E1 (E3-5) Correct waveform is as shown
        IGF1 (E3-24) - E1 (E3-5) Correct waveform is as shown
        Fig 1: Identifying E3 ECM Connector Terminals
        G05192480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE ECM 

    OK: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) 
    1. Disconnect the I2, I3, I4 or I5 ignition coil with igniter connector.
      2. Fig 2: Identifying I2, I3, I4 Or I5 Ignition Coil With Igniter Connector And E3 ECM Connector
      G05574929Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the E3 ECM connector.
    3. Check the resistance.

      Standard resistance (Check for open) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      IGF (I2-2) - IGF1 (E3-24) Below 1 Ω
      IGF (I3-2) - IGF1 (E3-24) Below 1 Ω
      IGF (I4-2) - IGF1 (E3-24) Below 1 Ω
      IGF (I5-2) - IGF1 (E3-24) Below 1 Ω

      Standard resistance (Check for open) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      IGT (I2-3) - IGT1 (E3-8) Below 1 Ω
      IGT (I3-3) - IGT2 (E3-9) Below 1 Ω
      IGT (I4-3) - IGT3 (E3-10) Below 1 Ω
      IGT (I5-3) - IGT4 (E3-11) Below 1 Ω

      Standard resistance (Check for short) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      IGF (I2-2) or IGF1 (E3-24) - Body ground 10 kΩ or higher
      IGF (I3-2) or IGF1 (E3-24) - Body ground 10 kΩ or higher
      IGF (I4-2) or IGF1 (E3-24) - Body ground 10 kΩ or higher
      IGF (I5-2) or IGF1 (E3-24) - Body ground 10 kΩ or higher

      Standard resistance (Check for short) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      IGT (I2-3) or IGT1 (E3-8) - Body ground 10 kΩ or higher
      IGT (I3-3) or IGT2 (E3-9) - Body ground 10 kΩ or higher
      IGT (I4-3) or IGT3 (E3-10) - Body ground 10 kΩ or higher
      IGT (I5-3) or IGT4 (E3-11) - Body ground 10 kΩ or higher
    4. Reconnect the ECM connector.
    5. Reconnect the ignition coil with igniter connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  4. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) 
    1. Disconnect the I2, I3, I4 or I5 ignition coil with igniter connector.
      2. Fig 3: Identifying Ignition Coil With Igniter Connector Terminals
      G05192482Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the resistance.

      Standard resistance (Check for open) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      GND (I2-4) - Body ground Below 1 Ω
      GND (I3-4) - Body ground Below 1 Ω
      GND (I4-4) - Body ground Below 1 Ω
      GND (I5-4) - Body ground Below 1 Ω
    3. Turn the ignition switch to the ON position.
    4. Measure the voltage between the terminals of the wire harness side connector.

      Standard voltage 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      +B (I2-1) - GND (I2-4) Between 9 V and 14 V
      +B (I3-1) - GND (I3-4) Between 9 V and 14 V
      +B (I4-1) - GND (I4-4) Between 9 V and 14 V
      +B (I5-1) - GND (I5-4) Between 9 V and 14 V
    5. Reconnect the ignition coil with igniter connector.

    NG: REPLACE IGNITION COIL ASSEMBLY 

    OK: Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - IGNITION SWITCH) 
    1. Disconnect the I2, I3, I4 or I5 ignition coil with igniter connector.
      2. Fig 4: Identifying I2, I3, I4 Or I5 Ignition Coil With Igniter Connector
      G05232795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the I11 ignition switch connector.
    3. Check the resistance.

      Standard resistance (Check for open) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      +B (I2-1) - IG2 (I11-6) Below 1 Ω
      +B (I3-1) - IG2 (I11-6) Below 1 Ω
      +B (I4-1) - IG2 (I11-6) Below 1 Ω
      +B (I5-1) - IG2 (I11-6) Below 1 Ω

      Standard resistance (Check for short) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      +B (I2-1) or IG2 (I11-6) - Body ground 10 kΩ or higher
      +B (I3-1) or IG2 (I11-6) - Body ground 10 kΩ or higher
      +B (I4-1) or IG2 (I11-6) - Body ground 10 kΩ or higher
      +B (I5-1) or IG2 (I11-6) - Body ground 10 kΩ or higher
    4. Reconnect the ignition coil with igniter connector.
    5. Reconnect the ignition switch connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE IGNITION COIL ASSEMBLY 

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