SFI SYSTEM, Diagnostic DTC:P0351/14, P0352/15, P0353/14, P0354/15

DTC Code DTC Name
P0351/14 Ignition Coil "A" Primary / Secondary Circuit
P0352/15 Ignition Coil "B" Primary / Secondary Circuit
P0353/14 Ignition Coil "C" Primary / Secondary Circuit
P0354/15 Ignition Coil "D" Primary / Secondary Circuit

DESCRIPTION

Tech Tips


  • These DTCs indicate malfunctions related to the primary circuit.

  • If DTC P0351/14 is displayed, check No. 1 ignition coil with igniter circuit.

  • If DTC P0352/15 is displayed, check No. 2 ignition coil with igniter circuit.

  • If DTC P0353/14 is displayed, check No. 3 ignition coil with igniter circuit.

  • If DTC P0354/15 is displayed, check No. 4 ignition coil with igniter circuit.

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

The DIS is a 1 cylinder ignition system which ignites one cylinder with one ignition coil. In the 1 cylinder ignition system, one spark plug is connected to the end of the secondary winding. High-voltage is generated in the secondary winding and is applied directly to the spark plug. The spark of the spark plug passes from the center electrode to the ground electrode.

The ECM determines the ignition timing and transmits the ignition (IGT) signals for each cylinder. Using the IGT signal, the ECM turns ON and OFF the power transistor inside the igniter, which turns ON and OFF a current to the primary coil. When the current to the primary coil is cut off, high-voltage is generated in the secondary coil and this voltage is applied to the spark plugs to create sparks inside the cylinders. As the ECM cuts the current to the primary coil, the igniter sends back the ignition confirmation (IGF) signal to the ECM.

A01DVVWE01
DTC No. DTC Detection Condition Trouble Area

P0351/14

P0352/15

P0353/14

P0354/15

 No IGF signal to ECM while engine is running

  • Ignition system

  • Open or short in IGF or IGT1 to 4 circuit from ignition coil with igniter to ECM

  • No. 1 to No. 4 ignition coil with igniter

  • ECM

MONITOR DESCRIPTION

A01E320E09

If the ECM does not receive an IGF after sending an IGT, it interprets this as a fault in the igniter and sets a DTC. The monitor runs for 1 second (the first second of engine idle) after the engine is started.

WIRING DIAGRAM

A01DZUEE02

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, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. PERFORM SIMULATION TEST


    1. Clear the DTCs Click here.

    2. Change the arrangement of the ignition coils (with igniters).

      Note

      Do not change the location of the connectors.

    3. Perform the simulation test.

      Result
      Display (DTC Output) Proceed to
      Cleared DTCs are output again A
      Other DTCs B

    B

    REPLACE IGNITION COIL ASSEMBLY

    A

  2. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)

    A01DX22E22

    1. Disconnect the I7, I8, I9 and I10 ignition coil with igniter connectors.

    2. Measure the resistance of the wire harness side connectors.

      Standard resistance
      Tester Connection Specified Condition
      I7-4 (GND) - Body ground Below 1 Ω
      I8-4 (GND) - Body ground Below 1 Ω
      I9-4 (GND) - Body ground Below 1 Ω
      I10-4 (GND) - Body ground Below 1 Ω

    3. Turn the ignition switch ON.

    4. Measure the voltage of the wire harness side connectors.

      Standard voltage
      Tester Connection Specified Condition
      I7-1 (+B) - I7-4 (GND) 11 to 14 V
      I8-1 (+B) - I8-4 (GND) 11 to 14 V
      I9-1 (+B) - I9-4 (GND) 11 to 14 V
      I10-1 (+B) - I10-4 (GND) 11 to 14 V

    OK

    REPLACE IGNITION COIL ASSEMBLY

    NG

  3. CHECK WIRE HARNESS (IGNITION COIL - ECM)

    A01DX1AE09

    1. Disconnect the I7, I8, I9 and I10 ignition coil with igniter connectors.

    2. Disconnect the E12 ECM connector.

    3. Measure the resistance of the wire harness side connectors.

      Standard resistance
      Tester Connection Specified Condition
      I7-2 - E12-23 (IGF1) Below 1 Ω
      I8-2 - E12-23 (IGF1) Below 1 Ω
      I9-2 - E12-23 (IGF1) Below 1 Ω
      I10-2 - E12-23 (IGF1) Below 1 Ω
      I7-3 - E12-17 (IGT1) Below 1 Ω
      I8-3 - E12-16 (IGT2) Below 1 Ω
      I9-3 - E12-15 (IGT3) Below 1 Ω
      I10-3 - E12-14 (IGT4) Below 1 Ω
      I7-2 or E12-23 (IGF1) - Body ground 10 kΩ or higher
      I8-2 or E12-23 (IGF1) - Body ground 10 kΩ or higher
      I9-2 or E12-23 (IGF1) - Body ground 10 kΩ or higher
      I10-2 or E12-23 (IGF1) - Body ground 10 kΩ or higher
      I7-3 or E12-17 (IGT1) - Body ground 10 kΩ or higher
      I8-3 or E12-16 (IGT2) - Body ground 10 kΩ or higher
      I9-3 or E12-15 (IGT3) - Body ground 10 kΩ or higher
      I10-3 or E12-14 (IGT4) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  4. CHECK ECM (IGT1, IGT2, IGT3, IGT4, IGF1 SIGNAL)

    A01DWBRE01

    1. While cranking or idling, check the waveform of the ECM connector using the oscilloscope.

      Standard
      Tester Connection Specified Condition
      E12-17 (IGT1) - E12-3 (E1) Correct waveform is as shown
      E12-16 (IGT2) - E12-3 (E1) Correct waveform is as shown
      E12-15 (IGT3) - E12-3 (E1) Correct waveform is as shown
      E12-14 (IGT4) - E12-3 (E1) Correct waveform is as shown
      E12-23 (IGF1) - E12-3 (E1) Correct waveform is as shown
      Tool setting Condition
      2 V/DIV., 20 msec./DIV. Idling

      Tech Tips

      The wavelength becomes shorter as engine speed increases.


    NG

    REPLACE ECM

    OK

  5. CHECK IF DTC OUTPUT RECURS (IGNITION COIL - INJ FUSE)


    1. Clear the DTC Click here.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch ON and turn the intelligent tester ON.

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

    5. Read the DTC.

      Result
      Display (DTC Output) Proceed to
      One or more of P0351, P0352, P0353, P0354, P0355 and P0356 A
      No output B

    B

    SYSTEM OK

    A

    REPLACE ECM