SFI SYSTEM, Diagnostic DTC:P0351, P0352, P0353, P0354, P0355, P0356

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
P0355 Ignition Coil "E" Primary / Secondary Circuit
P0356 Ignition Coil "F" Primary / Secondary Circuit

CAUTION / NOTICE / HINT

Tech Tips


  • These DTCs indicate malfunctions relating to the primary circuit.

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

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

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

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

  • If DTC P0355 is set, check the No. 5 ignition coil assembly circuit.

  • If DTC P0356 is set, check the No. 6 ignition coil assembly 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. High-voltage is generated in the secondary wiring and then applied directly to each spark plug. The sparks of the spark plugs pass from the center electrodes 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, high- 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 off, the igniter sends back an ignition confirmation (IGF) signal to the ECM, for each cylinder ignition.

A017CQ2E02
DTC No. DTC Detection Condition Trouble Area

P0351

P0352

P0353

P0354

P0355

P0356

 No IGF signal to ECM while engine is running (1 trip detection logic)

  • Ignition system

  • Open or short in IGF1 or IGT circuit (1 to 6) between ignition coil assembly and ECM

  • No. 1 to No. 6 ignition coils assemblies

  • ECM

Reference: Inspection using an oscilloscope

A017BV3E01

While cranking or idling, check the waveform between terminals IGT (1 to 6) and E1, and IGF1 and E1 of the ECM connector.

Item Content
Terminals

CH1: IGT1, IGT2, IGT3, IGT4, IGT5, IGT6 - E1

CH2: IGF1 - E1
Equipment Settings 2 V/DIV., 20 ms./DIV.
Conditions Idling

WIRING DIAGRAM

A017CUBE17
A017FFEE07
A017EMFE06

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 intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

PROCEDURE


  1. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353, P0354, P0355 OR P0356)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch on (IG).

    3. Turn the tester on.

    4. Clear the DTCs Click here.

    5. Shuffle arrangement of the ignition coil assemblies (among No. 1 to No. 6 cylinders).

      Note

      Do not shuffle the connectors.

    6. Perform a simulation test.

    7. Check the DTCs displayed on the tester.

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

    B

    REPLACE IGNITION COIL ASSEMBLY (MALFUNCTIONING CYLINDER) Click here

    A

  2. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)


    1. A017F96E50
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Ignition Coil Assembly)

      Disconnect the ignition coil assembly connector of malfunctioning cylinder.

    2. Turn the ignition switch on (IG).

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      B30-1 (+B) - Body ground Ignition switch on (IG) 11 to 14 V
      B31-1 (+B) - Body ground Ignition switch on (IG) 11 to 14 V
      B32-1 (+B) - Body ground Ignition switch on (IG) 11 to 14 V
      B33-1 (+B) - Body ground Ignition switch on (IG) 11 to 14 V
      B34-1 (+B) - Body ground Ignition switch on (IG) 11 to 14 V
      B35-1 (+B) - Body ground Ignition switch on (IG) 11 to 14 V

    4. Reconnect the ignition coil assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - IGNITION COIL)

    OK

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


    1. Disconnect the ignition coil connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      B30-4 (GND) - Body ground Always Below 1 Ω
      B31-4 (GND) - Body ground Always Below 1 Ω
      B32-4 (GND) - Body ground Always Below 1 Ω
      B33-4 (GND) - Body ground Always Below 1 Ω
      B34-4 (GND) - Body ground Always Below 1 Ω
      B35-4 (GND) - Body ground Always Below 1 Ω

    3. Reconnect the ignition connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. 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 (Check for open)
      Tester Connection Condition Specified Condition
      B30-2 (IGF) - B48-6 (IGF1) Always Below 1 Ω
      B31-2 (IGF) - B48-6 (IGF1) Always Below 1 Ω
      B32-2 (IGF) - B48-6 (IGF1) Always Below 1 Ω
      B33-2 (IGF) - B48-6 (IGF1) Always Below 1 Ω
      B34-2 (IGF) - B48-6 (IGF1) Always Below 1 Ω
      B35-2 (IGF) - B48-6 (IGF1) Always Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Condition Specified Condition
      B30-2 (IGF) or B48-6 (IGF1) - Body ground Always 10 kΩ or higher
      B31-2 (IGF) or B48-6 (IGF1) - Body ground Always 10 kΩ or higher
      B32-2 (IGF) or B48-6 (IGF1) - Body ground Always 10 kΩ or higher
      B33-2 (IGF) or B48-6 (IGF1) - Body ground Always 10 kΩ or higher
      B34-2 (IGF) or B48-6 (IGF1) - Body ground Always 10 kΩ or higher
      B35-2 (IGF) or B48-6 (IGF1) - Body ground Always 10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the ignition coil assembly connector.


    NG

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

    OK

  5. 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 (Check for open)
      Tester Connection Condition Specified Condition
      B30-3 (IGT1) - B48-24 (IGT1) Always Below 1 Ω
      B31-3 (IGT2) - B48-25 (IGT2) Always Below 1 Ω
      B32-3 (IGT3) - B48-26 (IGT3) Always Below 1 Ω
      B33-3 (IGT4) - B48-27 (IGT4) Always Below 1 Ω
      B34-3 (IGT5) - B48-28 (IGT5) Always Below 1 Ω
      B35-3 (IGT6) - B49-25 (IGT6) Always Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Condition Specified Condition
      B30-3 (IGT1) or B48-24 (IGT1) - Body ground Always 10 kΩ or higher
      B31-3 (IGT2) or B48-25 (IGT2) - Body ground Always 10 kΩ or higher
      B32-3 (IGT3) or B48-26 (IGT3) - Body ground Always 10 kΩ or higher
      B33-3 (IGT4) or B48-27 (IGT4) - Body ground Always 10 kΩ or higher
      B34-3 (IGT5) or B48-28 (IGT5) - Body ground Always 10 kΩ or higher
      B35-3 (IGT6) or B49-25 (IGT6) - Body ground Always 10 kΩ or higher

    4. Reconnect the ignition coil assembly connector.

    5. Reconnect the ECM connector.


    NG

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

    OK

    REPLACE ECM Click here