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SFI SYSTEM, Diagnostic DTC:P0351, P0352, P0353, P0354

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DTC Code DTC Name
P0351 Ignition Coil "A" Primary / Secondary Circuit
P0352 Ignition Coil "B" Primary / Secondary Circuit
P0353 Ignition Coil "C" Primary / Secondary Circuit
P0354 Ignition Coil "D" Primary / Secondary Circuit
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DESCRIPTION

A Direct Ignition System (DIS) is used on this vehicle.

The DIS is a 1-cylinder ignition system in which each cylinder is ignited by one ignition coil and one spark plug is connected to the end of each secondary wiring. A powerful voltage, generated in the secondary wiring, is applied directly to each spark plug. The sparks of the spark plugs pass from the center electrode to the ground electrodes.

The ECM determines the ignition timing and transmits the ignition (IGT) signals to each cylinder. Using the IGT signal, the ECM turns the power transistor inside the igniter on and off. The power transistor, in turn, switches on and off the current to the primary coil. When the current to the primary coil is cut off, a powerful voltage is generated in the secondary coil. This voltage is applied to the spark plugs, causing them to spark inside the cylinders. As the ECM cuts the current to the primary coil, the igniter sends back an ignition confirmation (IGF) signal to the ECM for each cylinder ignition.

DTC No. DTC Detection Condition Trouble Area

P0351

P0352

P0353

P0354

 No IGF signal is sent to the ECM while engine is running (1 trip detection logic).

  • Ignition system

  • Open or short in IGF1 or IGT (1 to 4) circuit between ignition coil and ECM

  • No. 1 to No. 4 ignition coils

  • ECM
A01IOM6E02
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tip:

  • These DTCs indicate malfunctions relating to the primary circuit.

  • If DTC P0351 is output, check the No. 1 ignition coil circuit.

  • If DTC P0352 is output, check the No. 2 ignition coil circuit.

  • If DTC P0353 is output, check the No. 3 ignition coil circuit.

  • If DTC P0354 is output, check the No. 4 ignition coil circuit.

  • Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / DTC.

    5. Read the DTC.

      Table 1. Result
      Result Proceed to
      DTC P0351, P0352, P0353 or P0354 is output A
      DTC P0351, P0352, P0353 and/or P0354 are output B

  2. Click here

    CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Clear the DTCs (Click here).

    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 the DTCs displayed on the tester.

      Table 2. Result
      Result Proceed to
      Same DTC output A
      Different ignition coil DTC output B

  3. Click here

    CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)


    1. A01IO8WE06

      Disconnect the ignition coil assembly connectors.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C40-1 (+B) - C40-4 (GND) Ignition switch ON 11 to 14 V
      C41-1 (+B) - C41-4 (GND) Ignition switch ON 11 to 14 V
      C42-1 (+B) - C42-4 (GND) Ignition switch ON 11 to 14 V
      C43-1 (+B) - C43-4 (GND) Ignition switch ON 11 to 14 V
      Table 3. Text in Illustration
      *1

      Front view of wire harness connector

      (to Ignition Coil)

    4. Reconnect the ignition coil connectors.


  4. Click here

    CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)


    1. Disconnect the ignition coil assembly connectors.

    2. Disconnect the ECM connector.

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

      Standard Resistance (Check for open)
      Tester Connection Condition Specified Condition
      C40-2 (IGF) - C68-82 (IGF1) Always Below 1 Ω
      C41-2 (IGF) - C68-82 (IGF1) Always Below 1 Ω
      C42-2 (IGF) - C68-82 (IGF1) Always Below 1 Ω
      C43-2 (IGF) - C68-82 (IGF1) Always Below 1 Ω
      Standard Resistance (Check for short)
      Tester Connection Condition Specified Condition
      C40-2 (IGF) or C68-82 (IGF1) - Body ground Always 10 kΩ or higher
      C41-2 (IGF) or C68-82 (IGF1) - Body ground Always 10 kΩ or higher
      C42-2 (IGF) or C68-82 (IGF1) - Body ground Always 10 kΩ or higher
      C43-2 (IGF) or C68-82 (IGF1) - Body ground Always 10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the ignition coil assembly connectors.


  5. Click here

    CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)


    1. Disconnect the ignition coil assembly connectors.

    2. Disconnect the ECM connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      C40-3 (IGT1) - C68-109 (IGT1) Always Below 1 Ω
      C41-3 (IGT2) - C68-108 (IGT2) Always Below 1 Ω
      C42-3 (IGT3) - C68-107 (IGT3) Always Below 1 Ω
      C43-3 (IGT4) - C68-106 (IGT4) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C40-3 (IGT1) or C68-109 (IGT1) - Body ground Always 10 kΩ or higher
      C41-3 (IGT2) or C68-108 (IGT2) - Body ground Always 10 kΩ or higher
      C42-3 (IGT3) or C68-107 (IGT3) - Body ground Always 10 kΩ or higher
      C43-3 (IGT4) or C68-106 (IGT4) - Body ground Always 10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the ignition coil assembly connectors.


  6. Click here

    CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)


    1. A01IO8WE07

      Disconnect the ignition coil assembly connectors.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      C40-4 (GND) - Body ground Always Below 1 Ω
      C41-4 (GND) - Body ground Always Below 1 Ω
      C42-4 (GND) - Body ground Always Below 1 Ω
      C43-4 (GND) - Body ground Always Below 1 Ω
      Table 4. Text in Illustration
      *1

      Front view of wire harness connector

      (to Ignition Coil Assembly)

    3. Reconnect the ignition coil assembly connectors.


  7. Click here

    CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - IGT/INJ RELAY)


    1. A01ISR1E02

      Disconnect the ignition coil assembly connectors.

    2. Remove the IGT/INJ relay from the engine room No. 1 relay block.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      C40-1 (+B) - IGT/INJ relay (3) Always Below 1 Ω
      C41-1 (+B) - IGT/INJ relay (3) Always Below 1 Ω
      C42-1 (+B) - IGT/INJ relay (3) Always Below 1 Ω
      C43-1 (+B) - IGT/INJ relay (3) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C40-1 (+B) or IGT/INJ relay (3) - Body ground Always 10 kΩ or higher
      C41-1 (+B) or IGT/INJ relay (3) - Body ground Always 10 kΩ or higher
      C42-1 (+B) or IGT/INJ relay (3) - Body ground Always 10 kΩ or higher
      C43-1 (+B) or IGT/INJ relay (3) - Body ground Always 10 kΩ or higher
      Table 5. Text in Illustration
      *1

      Front view of wire harness connector

      (to Ignition Coil Assembly)
      *2 Engine Room No. 1 Relay Block
      *3 IGT/INJ Relay

    4. Reinstall the IGT/INJ relay.

    5. Reconnect the ignition coil assembly connectors.


  8. Click here

    REPLACE IGNITION COIL ASSEMBLYClick here

  9. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM)

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    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM)

  11. Click here

    REPLACE ECMClick here

  12. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)

  13. Click here

    CHECK FUEL INJECTOR CIRCUITClick here

  14. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL - IGT/INJ RELAY)