SFI SYSTEM (w/o Secondary Air Injection 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

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.

A003G6TE03
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 coil assembly

  • ECM

MONITOR DESCRIPTION

A003H8DE08

If the ECM does not receive any IGF signals despite transmitting the IGT signal, it interprets this as a fault in the igniter and stores a DTC.

If the malfunction is not repaired successfully, a DTC is stored 1 second after the engine is next started.

WIRING DIAGRAM

A003GW8E01

INSPECTION PROCEDURE

Tech Tips


  • These DTCs indicate malfunctions relating to the primary circuit.

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

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

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

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

  • Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition 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. 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 DTCs.

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

    B

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

    A

  2. 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 the arrangement of the ignition coil assemblies (among the No. 1 to No. 4 cylinders).

      Note

      Do not shuffle the connectors.

    6. Perform a simulation test.

    7. Check the DTCs output to the tester.

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

    B

    REPLACE IGNITION COIL ASSEMBLY

    A

  3. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)


    1. A003AYZE30
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Ignition Coil Assembly)

      Disconnect the ignition coil assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D20-1 (+B) - D20-4 (GND) Ignition switch ON 11 to 14 V
      D21-1 (+B) - D21-4 (GND) Ignition switch ON 11 to 14 V
      D22-1 (+B) - D22-4 (GND) Ignition switch ON 11 to 14 V
      D23-1 (+B) - D23-4 (GND) Ignition switch ON 11 to 14 V

    NG

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

    OK

  4. 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
      Tester Connection Condition Specified Condition
      D20-2 (IGF) - D97-82 (IGF1) Always Below 1 Ω
      D21-2 (IGF) - D97-82 (IGF1) Always Below 1 Ω
      D22-2 (IGF) - D97-82 (IGF1) Always Below 1 Ω
      D23-2 (IGF) - D97-82 (IGF1) Always Below 1 Ω
      D20-2 (IGF) or D97-82 (IGF1) - Body ground Always 10 kΩ or higher
      D21-2 (IGF) or D97-82 (IGF1) - Body ground Always 10 kΩ or higher
      D22-2 (IGF) or D97-82 (IGF1) - Body ground Always 10 kΩ or higher
      D23-2 (IGF) or D97-82 (IGF1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. 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
      Tester Connection Condition Specified Condition
      D20-3 (IGT1) - D97-109 (IGT1) Always Below 1 Ω
      D21-3 (IGT2) - D97-108 (IGT2) Always Below 1 Ω
      D22-3 (IGT3) - D97-107 (IGT3) Always Below 1 Ω
      D23-3 (IGT4) - D97-106 (IGT4) Always Below 1 Ω
      D20-3 (IGT1) or D97-109 (IGT1) - Body ground Always 10 kΩ or higher
      D21-3 (IGT2) or D97-108 (IGT2) - Body ground Always 10 kΩ or higher
      D22-3 (IGT3) or D97-107 (IGT3) - Body ground Always 10 kΩ or higher
      D23-3 (IGT4) or D97-106 (IGT4) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM Click here

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


    1. Disconnect the ignition coil assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D20-4 (GND) - Body ground Always Below 1 Ω
      D21-4 (GND) - Body ground Always Below 1 Ω
      D22-4 (GND) - Body ground Always Below 1 Ω
      D23-4 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - NO. 1 INTEGRATION RELAY)


    1. Disconnect the ignition coil assembly connectors.

    2. Remove the No. 1 integration relay from the No. 1 engine room relay block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D20-1 (+B) - 10B-4 Always Below 1 Ω
      D21-1 (+B) - 10B-4 Always Below 1 Ω
      D22-1 (+B) - 10B-4 Always Below 1 Ω
      D23-1 (+B) - 10B-4 Always Below 1 Ω
      D20-1 (+B) or 10B-4 - Body ground Always 10 kΩ or higher
      D21-1 (+B) or 10B-4 - Body ground Always 10 kΩ or higher
      D22-1 (+B) or 10B-4 - Body ground Always 10 kΩ or higher
      D23-1 (+B) or 10B-4 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT NO. 1 INTEGRATION RELAY (INJ)


    1. Inspect the No. 1 integration relay (INJ) Click here.


    NG

    REPLACE NO. 1 INTEGRATION RELAY

    OK

  9. CHECK NO. 1 INTEGRATION RELAY (POWER SOURCE)

    A003FKXE01
    Text in Illustration
    *a

    Front view of wire harness connector

    (to No. 1 Integration Relay)

    1. Remove the No. 1 integration relay from the No. 1 engine room relay block.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      10B-1 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 INTEGRATION RELAY - BATTERY)

    OK

  10. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - NO. 2 INTEGRATION RELAY, BODY GROUND)


    1. Remove the No. 1 integration relay from the No. 1 engine room relay block.

    2. Remove the No. 2 integration relay from the instrument panel relay block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      10B-2 - 12B-7 Always Below 1 Ω
      10B-3 - Body ground Always Below 1 Ω
      10B-2 or 12B-7 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    CHECK ECM POWER SOURCE CIRCUIT Click here