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 ignition coil assembly (No. 1 cylinder) circuit.

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

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

  • If DTC P0354 is output, check the 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.

A011U26E01
DTC No. DTC Detection Condition Trouble Area

P0351

P0352

P0353

P0354

No IGF signal to the ECM while the engine is running (1 trip detection logic).
  • Ignition system

  • Open or short in IGF1 or IGT circuit (1 to 4) between ignition coil assembly and ECM

  • Ignition coil assemblies (No. 1 to No. 4 cylinder)

  • ECM

Reference: Inspection using an oscilloscope.

MONITOR DESCRIPTION

A011V3SE10

If the ECM does not receive any IGF1 signals despite transmitting the IGT signal, it interprets this as a fault in the igniter and stores a DTC.

MONITOR STRATEGY

Related DTCs

P0351: Igniter (cylinder 1) range check/function check

P0352: Igniter (cylinder 2) range check/function check

P0353: Igniter (cylinder 3) range check/function check

P0354: Igniter (cylinder 4) range check/function check

Required Sensors/Components (Main) Igniter
Required Sensors/Components (Related) Crankshaft position sensor
Frequency of Operation Continuous
Duration -
MIL Operation Immediate
Sequence of Operation None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored None
All of the following conditions are met -
Spark cut Not operating
Either of the following conditions is met A or B
A. Engine speed 1500 rpm or less
B. Starter Off
Either of the following conditions is met C or D
C. Both of the following conditions are met -
Engine speed 500 rpm or less
Battery voltage 6 V or higher
D. All of the following conditions are met -
Engine speed Higher than 500 rpm
Battery voltage 10 V or higher
Number of sparks after CPU reset 5 sparks or more

TYPICAL MALFUNCTION THRESHOLDS

All of the following conditions are met A, B, C and D
A. Ignition signal fail counter More than 2 times
B. Time after condition A is met 0.256 seconds or more
C. Ignition signal fail counter after condition B is met More than 2 times
D. Ignition switch ON

COMPONENT OPERATING RANGE

Confirmed ignition signal input when ignition signal is on to off 2 times or more

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.

  2. Turn the ignition switch to ON and turn the Techstream on.

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

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

  5. Turn the ignition switch to ON and turn the Techstream on.

  6. Start the engine.

  7. Idle the engine for 10 seconds or more [A].

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

  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.

    Techstream 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 steps [A] and [B] again.

  13. If no pending DTC is output, perform a universal trip and check for permanent DTCs Click here.

    Tech Tips

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

    • If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

A011R8RE01
A011RQZE01
A011RRYE02

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 Techstream. 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 connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E37-4 (GND) - Body ground Always Below 1 Ω
      E40-4 (GND) - Body ground Always Below 1 Ω
      E38-4 (GND) - Body ground Always Below 1 Ω
      E43-4 (GND) - Body ground Always Below 1 Ω
    NG
    OK
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY)

    1. Disconnect the ignition coil assembly connectors.

      A011S3EE68
    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
      E37-1 (+B) - E37-4 (GND) Ignition switch ON 11 to 14 V
      E40-1 (+B) - E40-4 (GND) Ignition switch ON 11 to 14 V
      E38-1 (+B) - E38-4 (GND) Ignition switch ON 11 to 14 V
      E43-1 (+B) - E43-4 (GND) Ignition switch ON 11 to 14 V
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Ignition Coil Assembly)

    NG
    OK
  3. 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
      E37-2 (IGF) - E26-51 (IGF1) Always Below 1 Ω
      E40-2 (IGF) - E26-51 (IGF1) Always Below 1 Ω
      E38-2 (IGF) - E26-51 (IGF1) Always Below 1 Ω
      E43-2 (IGF) - E26-51 (IGF1) Always Below 1 Ω
      E37-3 (IGT1) - E26-57 (IGT1) Always Below 1 Ω
      E40-3 (IGT2) - E26-56 (IGT2) Always Below 1 Ω
      E38-3 (IGT3) - E26-55 (IGT3) Always Below 1 Ω
      E43-3 (IGT4) - E26-54 (IGT4) Always Below 1 Ω
      E37-3 (IGT1) or E26-57 (IGT1) - Body ground Always 10 kΩ or higher
      E40-3 (IGT2) or E26-56 (IGT2) - Body ground Always 10 kΩ or higher
      E38-3 (IGT3) or E26-55 (IGT3) - Body ground Always 10 kΩ or higher
      E43-3 (IGT4) or E26-54 (IGT4) - Body ground Always 10 kΩ or higher
      E37-2 (IGF), E40-2 (IGF), E38-2 (IGF), E43-2 (IGF) or E26-51 (IGF1) - Body ground Always 10 kΩ or higher
    NG
    OK
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354)

    1. Connect the Techstream to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the Techstream on.

    4. Clear the DTCs Click here.

    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.

      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.

    B
    A
  5. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - IGNITION COIL ASSEMBLY)

    1. Disconnect the ignition coil assembly connectors.

    2. Remove the No. 1 integration relay from the 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
      E37-1 (+B) - 1A-1 Always Below 1 Ω
      E40-1 (+B) - 1A-1 Always Below 1 Ω
      E38-1 (+B) - 1A-1 Always Below 1 Ω
      E43-1 (+B) - 1A-1 Always Below 1 Ω
      E37-1 (+B), E40-1 (+B), E38-1 (+B), E43-1 (+B) or 1A-1 - Body ground Always 10 kΩ or higher
    NG
    OK