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

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

DESCRIPTION

Tech Tips


  • 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.

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.

A005V0GE01
DTC No. DTC Detection Condition Trouble Area

P0351

P0352

P0353

P0354

 No IGF signal is sent to the ECM while the 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

WIRING DIAGRAM

A005W24E01

INSPECTION PROCEDURE

Note

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

Tech Tips

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)

    A005SEYE02
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Ignition Coil)

    1. Disconnect the B28 to B31 ignition coil connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B28-4 (GND) - Body ground Always Below 1 Ω
      B29-4 (GND) - Body ground
      B30-4 (GND) - Body ground
      B31-4 (GND) - Body ground

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      B28-1 (+B) - B28-4 (GND) Engine switch on (IG) 11 to 14 V
      B29-1 (+B) - B29-4 (GND)
      B30-1 (+B) - B30-4 (GND)
      B31-1 (+B) - B31-4 (GND)

    4. Reconnect the ignition coil connectors.


    NG

    CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)

    A005UDKE01
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Ignition Coil)
    *2

    Front view of wire harness connector

    (to ECM)

    1. Disconnect the B28 to B31 ignition coil connectors.

    2. Disconnect the B39 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
      B28-2 (IGF) - B39-81 (IGF1) Always Below 1 Ω
      B29-2 (IGF) - B39-81 (IGF1)
      B30-2 (IGF) - B39-81 (IGF1)
      B31-2 (IGF) - B39-81 (IGF1)
      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      B28-3 (IGT1) - B39-85 (IGT1) Always Below 1 Ω
      B29-3 (IGT2) - B39-84 (IGT2)
      B30-3 (IGT3) - B39-83 (IGT3)
      B31-3 (IGT4) - B39-82 (IGT4)
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B28-2 (IGF) or B39-81 (IGF1) - Body ground Always 10 kΩ or higher
      B29-2 (IGF) or B39-81 (IGF1) - Body ground
      B30-2 (IGF) or B39-81 (IGF1) - Body ground
      B31-2 (IGF) or B39-81 (IGF1) - Body ground
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B28-3 (IGT1) or B39-85 (IGT1) - Body ground Always 10 kΩ or higher
      B29-3 (IGT2) or B39-84 (IGT2) - Body ground
      B30-3 (IGT3) or B39-83 (IGT3) - Body ground
      B31-3 (IGT4) or B39-82 (IGT4) - Body ground

    4. Reconnect the ECM connector.

    5. Reconnect the ignition coil connectors.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG) and turn the tester on.

    3. Clear DTCs Click here.

    4. Shuffle the arrangement of the ignition coils with igniters (among the No. 1 to No. 4 cylinders).

      Note

      Do not shuffle the connectors.

    5. Perform a simulation test.

    6. Check the DTCs displayed on the tester.

      Result
      Result Proceed to
      Same DTC output A
      Different ignition coil DTC output B

    B

    REPLACE IGNITION COIL ASSEMBLY Click here

    A

    REPLACE ECM Click here

  4. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY)


    1. A005UY5E03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Ignition Coil)
      *2

      Front view of wire harness connector

      (to Integration Relay)
      *3 Engine Room No. 1 Relay Block

      Disconnect the B28 to B31 ignition coil connectors.

    2. Remove the integration 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
      B28-1 (+B) - 1A-4 Always Below 1 Ω
      B29-1 (+B) - 1A-4
      B30-1 (+B) - 1A-4
      B31-1 (+B) - 1A-4
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B28-1 (+B) or 1A-4 - Body ground Always 10 kΩ or higher
      B29-1 (+B) or 1A-4 - Body ground
      B30-1 (+B) or 1A-4 - Body ground
      B31-1 (+B) or 1A-4 - Body ground

    4. Reinstall the integration relay.

    5. Reconnect the ignition coil connectors.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    CHECK ECM POWER SOURCE CIRCUIT Click here