SFI SYSTEM, Diagnostic DTC:P0351,P0352,P0353 and 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 assembly 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.

A208680E08

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 assembly and ECM

  • No. 1 to No. 4 ignition coil assemblies

  • ECM

WIRING DIAGRAM

A277628E02

CAUTION / NOTICE / HINT

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 assembly circuit.

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

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

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

  • Read freeze frame data using the GTS. 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.

PROCEDURE

  1. CHECK DTC OUTPUT

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    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

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

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

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs (Click here).

    5. Shuffle arrangement of the ignition coil assemblies (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 GTS.

      Table 2. Result

      Result

      Proceed to

      Same DTC output

      A

      Different ignition coil DTC output

      B
      Tip:

      Perform "Inspection After Repair" after replacing the ignition coil assembly (Click here).

    REPLACE IGNITION COIL ASSEMBLY

    (Click here)

  3. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)

    1. U121439E02

      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

      *a

      Front view of wire harness connector

      (to Ignition Coil Assembly)

    4. Reconnect the ignition coil assembly connectors.

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

  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 (Check for Open)

      Tester Connection

      Condition

      Specified Condition

      C40-2 (IGF) - C111-71 (IGF1)

      Always

      Below 1 Ω

      C41-2 (IGF) - C111-71 (IGF1)

      Always

      Below 1 Ω

      C42-2 (IGF) - C111-71 (IGF1)

      Always

      Below 1 Ω

      C43-2 (IGF) - C111-71 (IGF1)

      Always

      Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection

      Condition

      Specified Condition

      C40-2 (IGF) or C111-71 (IGF1) - Body ground

      Always

      10 kΩ or higher

      C41-2 (IGF) or C111-71 (IGF1) - Body ground

      Always

      10 kΩ or higher

      C42-2 (IGF) or C111-71 (IGF1) - Body ground

      Always

      10 kΩ or higher

      C43-2 (IGF) or C111-71 (IGF1) - Body ground

      Always

      10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the ignition coil assembly connectors.

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

  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 (Check for Open)

      Tester Connection

      Condition

      Specified Condition

      C40-3 (IGT1) - C111-75 (IGT1)

      Always

      Below 1 Ω

      C41-3 (IGT2) - C111-74 (IGT2)

      Always

      Below 1 Ω

      C42-3 (IGT3) - C111-73 (IGT3)

      Always

      Below 1 Ω

      C43-3 (IGT4) - C111-72 (IGT4)

      Always

      Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection

      Condition

      Specified Condition

      C40-3 (IGT1) or C111-75 (IGT1) - Body ground

      Always

      10 kΩ or higher

      C41-3 (IGT2) or C111-74 (IGT2) - Body ground

      Always

      10 kΩ or higher

      C42-3 (IGT3) or C111-73 (IGT3) - Body ground

      Always

      10 kΩ or higher

      C43-3 (IGT4) or C111-72 (IGT4) - Body ground

      Always

      10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the ignition coil assembly connectors.

    REPLACE ECM

    (Click here)

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

  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 (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

    3. Reconnect the ignition coil assembly connectors.

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

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

    1. Disconnect the ignition coil assembly connectors.

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

    3. Disconnect the integration relay connector.

    4. 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) - 1B-8

      Always

      Below 1 Ω

      C41-1 (+B) - 1B-8

      Always

      Below 1 Ω

      C42-1 (+B) - 1B-8

      Always

      Below 1 Ω

      C43-1 (+B) - 1B-8

      Always

      Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection

      Condition

      Specified Condition

      C40-1 (+B) or 1B-8 - Body ground

      Always

      10 kΩ or higher

      C41-1 (+B) or 1B-8 - Body ground

      Always

      10 kΩ or higher

      C42-1 (+B) or 1B-8 - Body ground

      Always

      10 kΩ or higher

      C43-1 (+B) or 1B-8 - Body ground

      Always

      10 kΩ or higher

    5. Reconnect the integration relay connector.

    6. Reinstall the integration relay.

    7. Reconnect the ignition coil assembly connectors.

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY)

  8. INSPECT INTEGRATION RELAY (IGT/INJ RELAY)

    1. Inspect the IGT/INJ relay (Click here).

    REPLACE INTEGRATION RELAY

  9. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - INTEGRATION RELAY)

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

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

      Standard Resistance (Check for Open)

      Tester Connection

      Condition

      Specified Condition

      1B-4 - 1B-6

      Always

      Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection

      Condition

      Specified Condition

      1B-4 or 1B-6 - Body ground

      Always

      10 kΩ or higher

    3. Reconnect the integration relay connector.

    4. Reinstall the integration relay.

    REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - INTEGRATION RELAY)

  10. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BODY GROUND)

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

    2. Disconnect the integration relay connector.

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

      Standard Resistance (Check for Open)

      Tester Connection

      Condition

      Specified Condition

      1B-7 - Body ground

      Always

      Below 1 Ω

    4. Reconnect the integration relay connector.

    5. Reinstall the integration relay.

    GO TO ECM POWER SOURCE CIRCUIT

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - BODY GROUND)