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 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.

A Direct Ignition System (DIS) is used on this vehicle.

The DIS is an ignition system in which each cylinder is ignited by its own ignition coil assembly and spark plug. The secondary wiring of each ignition coil generates a powerful voltage which is applied directly to each spark plug. The spark passes from the center electrode of the spark plug to the ground electrode.

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.

A003RHIE06
DTC No. DTC Detection Conditions Trouble Areas

P0351

P0352

P0353

P0354

No IGF signal is sent to the ECM while the engine is running (ECM does not receive any IGF signals despite the ECM signal an IGT signal to the igniter)

(1 trip detection logic)

  • Ignition system

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

  • No. 1 to No. 4 ignition coil assemblies

  • ECM

Standard
Tester Connection Tool Setting Condition Specified Condition
B31-108 (IGT1) - B31-104 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown
B31-107 (IGT2) - B31-104 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown
B31-106 (IGT3) - B31-104 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown
B31-105 (IGT4) - B31-104 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown
B31-23 (IGF1) - B31-104 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown

Tech Tips

While cranking or idling the engine, check the waveform between terminals IGT (1 to 4) and E1, and IGF1 and E1 of the ECM connector.

WIRING DIAGRAM

A003RYYE06
A003RFWE05

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 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
      B26-4 (GND) - Body ground Always Below 1 Ω
      B27-4 (GND) - Body ground Always Below 1 Ω
      B28-4 (GND) - Body ground Always Below 1 Ω
      B29-4 (GND) - Body ground Always Below 1 Ω

    3. Reconnect the ignition coil assembly connectors.


    NG

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

    OK

  2. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE VOLTAGE)


    1. A003U0ME40
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Ignition Coil Assembly)

      Disconnect the ignition coil assembly connectors.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      B26-1 (+B) - B26-4 (GND) Power switch on (IG) 11 to 14 V
      B27-1 (+B) - B27-4 (GND) Power switch on (IG) 11 to 14 V
      B28-1 (+B) - B28-4 (GND) Power switch on (IG) 11 to 14 V
      B29-1 (+B) - B29-4 (GND) Power switch on (IG) 11 to 14 V

    4. Reconnect the ignition coil assembly connectors.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - NO. 2 INTEGRATION RELAY)

    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 (Check for Open)
      Tester Connection Condition Specified Condition
      B26-2 (IGF) - B31-23 (IGF1) Always Below 1 Ω
      B27-2 (IGF) - B31-23 (IGF1) Always Below 1 Ω
      B28-2 (IGF) - B31-23 (IGF1) Always Below 1 Ω
      B29-2 (IGF) - B31-23 (IGF1) Always Below 1 Ω
      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      B26-3 (IGT1) - B31-108 (IGT1) Always Below 1 Ω
      B27-3 (IGT2) - B31-107 (IGT2) Always Below 1 Ω
      B28-3 (IGT3) - B31-106 (IGT3) Always Below 1 Ω
      B29-3 (IGT4) - B31-105 (IGT4) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B26-2 (IGF) or B31-23 (IGF1) - Body ground Always 10 kΩ or higher
      B27-2 (IGF) or B31-23 (IGF1) - Body ground Always 10 kΩ or higher
      B28-2 (IGF) or B31-23 (IGF1) - Body ground Always 10 kΩ or higher
      B29-2 (IGF) or B31-23 (IGF1) - Body ground Always 10 kΩ or higher
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B26-3 (IGT1) or B31-108 (IGT1) - Body ground Always 10 kΩ or higher
      B27-3 (IGT2) or B31-107 (IGT2) - Body ground Always 10 kΩ or higher
      B28-3 (IGT3) or B31-106 (IGT3) - Body ground Always 10 kΩ or higher
      B29-3 (IGT4) or B31-105 (IGT4) - Body ground Always 10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the ignition coil assembly connectors.


    NG

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

    OK

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


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power 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. 4 cylinders).

      Note

      Do not shuffle the connectors.

    6. Put the engine in inspection mode Click here.

    7. Start the engine and wait for 10 seconds or more.

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

    9. Read the DTCs.

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

    B

    REPLACE IGNITION COIL ASSEMBLY Click here

    A

    REPLACE ECM Click here