GSIC - Global Service Information Center

### DTC P0351/14 Ignition Coil "A" Primary / Secondary Circuit

### DTC P0352/15 Ignition Coil "B" Primary / Secondary Circuit

### DTC P0353/14 Ignition Coil "C" Primary / Secondary Circuit

### DTC P0354/15 Ignition Coil "D" Primary / Secondary Circuit

## for Preparation Click here

## DESCRIPTION

HINT:

1. These DTCs indicate malfunctions related to the primary circuit.
2. If DTC P0351/14 is displayed, check No. 1 ignition coil with igniter circuit.
3. If DTC P0352/15 is displayed, check No. 2 ignition coil with igniter circuit.
4. If DTC P0353/14 is displayed, check No. 3 ignition coil with igniter circuit.
5. If DTC P0354/15 is displayed, check No. 4 ignition coil with igniter circuit.

A Direct Ignition System (DIS) is used on this vehicle.
The DIS is a 1 cylinder ignition system which ignites one cylinder with one ignition coil. In the 1 cylinder ignition system, one spark plug is connected to the end of the secondary winding. High-voltage is generated in the secondary winding and is applied directly to the spark plug. The spark of the spark plug passes from the center electrode to the ground electrode.
The ECM determines the ignition timing and transmits the ignition (IGT) signals for each cylinder. Using the IGT signal, the ECM turns ON and OFF the power transistor inside the igniter, which turns ON and OFF a current to the primary coil. When the current to the primary coil is cut off, high-voltage is generated in the secondary coil and this voltage is applied to the spark plugs to create sparks inside the cylinders. As the ECM cuts the current to the primary coil, the igniter sends back the ignition confirmation (IGF) signal to the ECM.

DTC No. | DTC Detection Condition | Trouble Area

P0351/14
P0352/15
P0353/14
P0354/15

No IGF signal to ECM while engine is running

1. Ignition system
2. Open or short in IGF or IGT1 to 4 circuit from ignition coil with igniter to ECM
3. No. 1 to No. 4 ignition coil with igniter
4. ECM

## MONITOR DESCRIPTION

If the ECM does not receive an IGF after sending an IGT, it interprets this as a fault in the igniter and sets a DTC. The monitor runs for 1 second (the first second of engine idle) after the engine is started.

## WIRING DIAGRAM

## INSPECTION PROCEDURE

HINT:

  Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. 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.

1.PERFORM SIMULATION TEST

1. Clear the DTCs (Click here).

1. Change the arrangement of the ignition coils (with igniters).

   NOTICE:
     Do not change the location of the connectors.

1. Perform the simulation test.

   Result:

     Display (DTC Output) | Proceed to
     Cleared DTCs are output again | A
     Other DTCs | B

| B |

REPLACE IGNITION COIL ASSEMBLY

A |

2.CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)

1. Disconnect the I7, I8, I9 and I10 ignition coil with igniter connectors.

1. Measure the resistance of the wire harness side connectors.

   Standard resistance:

     Tester Connection | Specified Condition
     I7-4 (GND) - Body ground | Below 1 Ω
     I8-4 (GND) - Body ground | Below 1 Ω
     I9-4 (GND) - Body ground | Below 1 Ω
     I10-4 (GND) - Body ground | Below 1 Ω

1. Turn the ignition switch ON.

1. Measure the voltage of the wire harness side connectors.

   Standard voltage:

     Tester Connection | Specified Condition
     I7-1 (+B) - I7-4 (GND) | 9 to 14 V
     I8-1 (+B) - I8-4 (GND) | 9 to 14 V
     I9-1 (+B) - I9-4 (GND) | 9 to 14 V
     I10-1 (+B) - I10-4 (GND) | 9 to 14 V

| OK |

REPLACE IGNITION COIL ASSEMBLY

NG |

3.CHECK WIRE HARNESS (IGNITION COIL ASSEMBLY - ECM)

1. Disconnect the I7, I8, I9 and I10 ignition coil with igniter connectors.

1. Disconnect the E12 ECM connector.

1. Measure the resistance of the wire harness side connectors.

   Standard resistance:

     Tester Connection | Specified Condition
     I7-2 - E12-23 (IGF1) | Below 1 Ω
     I8-2 - E12-23 (IGF1) | Below 1 Ω
     I9-2 - E12-23 (IGF1) | Below 1 Ω
     I10-2 - E12-23 (IGF1) | Below 1 Ω
     I7-3 - E12-17 (IGT1) | Below 1 Ω
     I8-3 - E12-16 (IGT2) | Below 1 Ω
     I9-3 - E12-15 (IGT3) | Below 1 Ω
     I10-3 - E12-14 (IGT4) | Below 1 Ω
     I7-2 or E12-23 (IGF1) - Body ground | 10 kΩ or higher
     I8-2 or E12-23 (IGF1) - Body ground | 10 kΩ or higher
     I9-2 or E12-23 (IGF1) - Body ground | 10 kΩ or higher
     I10-2 or E12-23 (IGF1) - Body ground | 10 kΩ or higher
     I7-3 or E12-17 (IGT1) - Body ground | 10 kΩ or higher
     I8-3 or E12-16 (IGT2) - Body ground | 10 kΩ or higher
     I9-3 or E12-15 (IGT3) - Body ground | 10 kΩ or higher
     I10-3 or E12-14 (IGT4) - Body ground | 10 kΩ or higher

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

4.CHECK ECM (IGT1, IGT2, IGT3, IGT4, IGF1 SIGNAL)

1. While cranking or idling, check the waveform of the ECM connector using the oscilloscope.

   Standard:

     Tester Connection | Specified Condition
     E12-17 (IGT1) - E12-3 (E1) | Correct waveform is as shown
     E12-16 (IGT2) - E12-3 (E1) | Correct waveform is as shown
     E12-15 (IGT3) - E12-3 (E1) | Correct waveform is as shown
     E12-14 (IGT4) - E12-3 (E1) | Correct waveform is as shown
     E12-23 (IGF1) - E12-3 (E1) | Correct waveform is as shown

   Tool setting | Condition
   2 V/DIV., 20 msec./DIV. | Idling

   HINT:
     The wavelength becomes shorter as engine speed increases.

| NG |

REPLACE ECM

OK |

5.CHECK IF DTC OUTPUT RECURS (IGNITION COIL ASSEMBLY - INJ FUSE)

1. Clear the DTC (Click here).

1. Connect the intelligent tester to the DLC3.

1. Turn the ignition switch ON and turn the intelligent tester ON.

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

1. Read the DTC.

   Result:

     Display (DTC Output) | Proceed to
     One or more of P0351, P0352, P0353, P0354, P0355 and P0356 | A
     No output | B

| B |

SYSTEM OK

A |

REPLACE ECM