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 assembly (No. 1 cylinder) circuit.

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

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

  • If DTC P0354 is output, check the No. 4 ignition coil assembly (No. 4 cylinder) 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 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 spark of the spark plugs passes 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 the current supplied to the primary coil on and off. 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.

B005ARKE09
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0351 Ignition Coil "A" Primary / Secondary Circuit No IGF signal to ECM while the engine is running (1 trip detection logic).
  • Ignition system

  • Open or short in IGF1 or IGT1 circuit between ignition coil assembly and ECM

  • No. 1 ignition coil assembly

  • No. 1 integration relay

  • ECM

Comes on DTC stored
P0352 Ignition Coil "B" Primary / Secondary Circuit No IGF signal to ECM while the engine is running (1 trip detection logic).
  • Ignition system

  • Open or short in IGF1 or IGT2 circuit between ignition coil assembly and ECM

  • No. 2 ignition coil assembly

  • No. 1 integration relay

  • ECM

Comes on DTC stored
P0353 Ignition Coil "C" Primary / Secondary Circuit No IGF signal to ECM while the engine is running (1 trip detection logic).
  • Ignition system

  • Open or short in IGF1 or IGT3 circuit between ignition coil assembly and ECM

  • No. 3 ignition coil assembly

  • No. 1 integration relay

  • ECM

Comes on DTC stored
P0354 Ignition Coil "D" Primary / Secondary Circuit No IGF signal to ECM while the engine is running (1 trip detection logic).
  • Ignition system

  • Open or short in IGF1 or IGT4 circuit between ignition coil assembly and ECM

  • No. 4 ignition coil assembly

  • No. 1 integration relay

  • ECM

Comes on DTC stored

MONITOR DESCRIPTION

B005A7YE11

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.

MONITOR STRATEGY

Required Sensors/Components (Main) Igniter (Cylinder 1 to 4)
Required Sensors/Components (Related) Crankshaft position sensor
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

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

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the GTS on.

  6. Start the engine.

  7. Idle the engine for 10 seconds or more.

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

  9. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  11. Input the DTC: P0351, P0352, P0353 or P0354.

  12. Check the DTC judgment result.

    GTS Display Description
    NORMAL
    • DTC judgment completed

    • System normal

    ABNORMAL
    • DTC judgment completed

    • System abnormal

    INCOMPLETE
    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    N/A
    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

B0059S6E03
B0056ZDE07

CAUTION / NOTICE / HINT

Note

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

Tech Tips

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 HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)


    1. Disconnect the ignition coil assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C40-4 (GND) - Body ground Always Below 1 Ω
      C39-4 (GND) - Body ground Always Below 1 Ω
      C38-4 (GND) - Body ground Always Below 1 Ω
      C37-4 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG
    OK
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY)


    1. B005BEAC75
      *a

      Front view of wire harness connector

      (to Ignition Coil Assembly)

      Disconnect the ignition coil assembly connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C40-1 (+B) - C40-4 (GND) Engine switch on (IG) 11 to 14 V
      C39-1 (+B) - C39-4 (GND) Engine switch on (IG) 11 to 14 V
      C38-1 (+B) - C38-4 (GND) Engine switch on (IG) 11 to 14 V
      C37-1 (+B) - C37-4 (GND) Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG
    OK
  3. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)


    1. Disconnect the ignition coil assembly connector.

    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
      C40-2 (IGF) - C65-71 (IGF1) Always Below 1 Ω
      C39-2 (IGF) - C65-71 (IGF1) Always Below 1 Ω
      C38-2 (IGF) - C65-71 (IGF1) Always Below 1 Ω
      C37-2 (IGF) - C65-71 (IGF1) Always Below 1 Ω
      C40-3 (IGT1) - C65-75 (IGT1) Always Below 1 Ω
      C39-3 (IGT2) - C65-74 (IGT2) Always Below 1 Ω
      C38-3 (IGT3) - C65-73 (IGT3) Always Below 1 Ω
      C37-3 (IGT4) - C65-72 (IGT4) Always Below 1 Ω
      C40-2 (IGF) or C65-71 (IGF1) - Body ground and other terminals Always 10 kΩ or higher
      C39-2 (IGF) or C65-71 (IGF1) - Body ground and other terminals Always 10 kΩ or higher
      C38-2 (IGF) or C65-71 (IGF1) - Body ground and other terminals Always 10 kΩ or higher
      C37-2 (IGF) or C65-71 (IGF1) - Body ground and other terminals Always 10 kΩ or higher
      C40-3 (IGT1) or C65-75 (IGT1) - Body ground and other terminals Always 10 kΩ or higher
      C39-3 (IGT2) or C65-74 (IGT2) - Body ground and other terminals Always 10 kΩ or higher
      C38-3 (IGT3) or C65-73 (IGT3) - Body ground and other terminals Always 10 kΩ or higher
      C37-3 (IGT4) or C65-72 (IGT4) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG
    OK
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs
    5. Shuffle the arrangement of the ignition coil assemblies (among No. 1 to No. 4 cylinders).

      Note

      Do not change the location of the connectors.

    6. Perform a simulation test.

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

    8. Read the DTCs.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Result Proceed to
      Same DTC output A
      Different ignition coil DTC output B

      Tech Tips

      Perform "Inspection After Repair" after replacing the ignition coil assembly.

      Click here


    A
    B
  5. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - EFI-MAIN NO. 2 RELAY)


    1. Disconnect the ignition coil assembly connector.

    2. Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C40-1 (+B) - 3 (EFI-MAIN NO. 2 relay holder) Always Below 1 Ω
      C39-1 (+B) - 3 (EFI-MAIN NO. 2 relay holder) Always Below 1 Ω
      C38-1 (+B) - 3 (EFI-MAIN NO. 2 relay holder) Always Below 1 Ω
      C37-1 (+B) - 3 (EFI-MAIN NO. 2 relay holder) Always Below 1 Ω
      C40-1 (+B) or 3 (EFI-MAIN NO. 2 relay holder) - Body ground and other terminals Always 10 kΩ or higher
      C39-1 (+B) or 3 (EFI-MAIN NO. 2 relay holder) - Body ground and other terminals Always 10 kΩ or higher
      C38-1 (+B) or 3 (EFI-MAIN NO. 2 relay holder) - Body ground and other terminals Always 10 kΩ or higher
      C37-1 (+B) or 3 (EFI-MAIN NO. 2 relay holder) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG
    OK
  6. INSPECT EFI-MAIN NO. 2 RELAY


    1. Inspect the EFI-MAIN NO. 2 relay.

      Click here

      Result
      Proceed to
      OK
      NG

    NG
    OK
  7. CHECK HARNESS AND CONNECTOR


    1. Remove the EFI-MAIN NO. 1 relay and EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (EFI-MAIN NO. 1 relay holder) - 2 (EFI-MAIN NO. 2 relay holder) Always Below 1 Ω
      1 (EFI-MAIN NO. 2 relay holder) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG
    OK
  8. CHECK TERMINAL VOLTAGE (EFI-MAIN NO. 2 RELAY)


    1. Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and junction block assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      5 (EFI-MAIN NO. 2 relay holder) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK
    NG