СИСТЕМА SFI (для моделей с вспомогательной системой подачи воздуха в нейтрализатор), Diagnostic DTC:P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358

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
P0357	Ignition Coil "G" Primary / Secondary Circuit
P0358	Ignition Coil "H" 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 circuit.
If DTC P0352 is output, check the No. 2 ignition coil circuit.
If DTC P0353 is output, check the No. 3 ignition coil circuit.
If DTC P0354 is output, check the No. 4 ignition coil circuit.
If DTC P0355 is output, check the No. 5 ignition coil circuit.
If DTC P0356 is output, check the No. 6 ignition coil circuit.
If DTC P0357 is output, check the No. 7 ignition coil circuit.
If DTC P0358 is output, check the No. 8 ignition coil 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 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 sparks of the spark plugs pass 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 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.

DTC Code	DTC Detection Condition	Trouble Area
P0351 P0352 P0353 P0354 P0355 P0356 P0357 P0358	No IGF signal is sent to the ECM while the engine is running (1 trip detection logic).	Ignition system Open or short in IGF1 or IGT circuit (1 to 8) between ignition coil and ECM No. 1 to No. 8 ignition coils ECM

DTC Code

DTC Detection Condition

Trouble Area

P0351

P0352

P0353

P0354

P0355

P0356

P0357

P0358

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

Ignition system
Open or short in IGF1 or IGT circuit (1 to 8) between ignition coil and ECM
No. 1 to No. 8 ignition coils
ECM

Reference: Inspection using an oscilloscope.


*a	2 V/DIV.
*b	20 msec./DIV.

Standard

Tester Connection	Tool Setting	Condition	Specified Condition
C45-37 (IGT1) - C45-81 (E1)	2 V/DIV., 20 msec./DIV.	Idling	The correct waveform is as shown
C45-36 (IGT2) - C45-81 (E1)	2 V/DIV., 20 msec./DIV.	Idling	The correct waveform is as shown
C45-35 (IGT3) - C45-81 (E1)	2 V/DIV., 20 msec./DIV.	Idling	The correct waveform is as shown
C45-34 (IGT4) - C45-81 (E1)	2 V/DIV., 20 msec./DIV.	Idling	The correct waveform is as shown
C45-33 (IGT5) - C45-81 (E1)	2 V/DIV., 20 msec./DIV.	Idling	The correct waveform is as shown
C45-32 (IGT6) - C45-81 (E1)	2 V/DIV., 20 msec./DIV.	Idling	The correct waveform is as shown
C45-31 (IGT7) - C45-81 (E1)	2 V/DIV., 20 msec./DIV.	Idling	The correct waveform is as shown
C45-30 (IGT8) - C45-81 (E1)	2 V/DIV., 20 msec./DIV.	Idling	The correct waveform is as shown
C45-54 (IGF1) - C45-81 (E1)	2 V/DIV., 20 msec./DIV.	Idling	The correct waveform is as shown
C45-53 (IGF2) - C45-81 (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 8) and E1, and IGF1 or IGF2 and E1 of the ECM connector.

MONITOR DESCRIPTION

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 DTC(s).

If the malfunction is not repaired successfully, a DTC is stored 1 second after the engine is next started.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition 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.

PROCEDURE

INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)


*1	Front view of wire harness connector: (to Ignition Coil with Igniter)

Disconnect the C4, C6, C8, C11, C13, C15, C51 or C53 ignition coil connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
C4-4 (GND) - Body ground	Always	Below 1 Ω
C15-4 (GND) - Body ground	Always	Below 1 Ω
C6-4 (GND) - Body ground	Always	Below 1 Ω
C13-4 (GND) - Body ground	Always	Below 1 Ω
C8-4 (GND) - Body ground	Always	Below 1 Ω
C11-4 (GND) - Body ground	Always	Below 1 Ω
C51-4 (GND) - Body ground	Always	Below 1 Ω
C53-4 (GND) - Body ground	Always	Below 1 Ω

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

Standard Voltage

Tester Connection	Switch Condition	Specified Condition
C4-1 (+B) - C4-4 (GND)	Engine switch on (IG)	11 to 14 V
C15-1 (+B) - C15-4 (GND)	Engine switch on (IG)	11 to 14 V
C6-1 (+B) - C6-4 (GND)	Engine switch on (IG)	11 to 14 V
C13-1 (+B) - C13-4 (GND)	Engine switch on (IG)	11 to 14 V
C8-1 (+B) - C8-4 (GND)	Engine switch on (IG)	11 to 14 V
C11-1 (+B) - C11-4 (GND)	Engine switch on (IG)	11 to 14 V
C51-1 (+B) - C51-4 (GND)	Engine switch on (IG)	11 to 14 V
C53-1 (+B) - C53-4 (GND)	Engine switch on (IG)	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)

Disconnect the C4, C6, C8, C11, C13, C15, C51 or C53 ignition coil connector.
Disconnect the C45 ECM connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
C4-2 (IGF1) - C45-54 (IGF1)	Always	Below 1 Ω
C15-2 (IGF2) - C45-53 (IGF2)	Always	Below 1 Ω
C6-2 (IGF2) - C45-53 (IGF2)	Always	Below 1 Ω
C13-2 (IGF1) - C45-54 (IGF1)	Always	Below 1 Ω
C8-2 (IGF2) - C45-53 (IGF2)	Always	Below 1 Ω
C11-2 (IGF1) - C45-54 (IGF1)	Always	Below 1 Ω
C51-2 (IGF1) - C45-54 (IGF1)	Always	Below 1 Ω
C53-2 (IGF2) - C45-53 (IGF2)	Always	Below 1 Ω
C4-3 (IGT1) - C45-37 (IGT1)	Always	Below 1 Ω
C15-3 (IGT2) - C45-36 (IGT2)	Always	Below 1 Ω
C6-3 (IGT3) - C45-35 (IGT3)	Always	Below 1 Ω
C13-3 (IGT4) - C45-34 (IGT4)	Always	Below 1 Ω
C8-3 (IGT5) - C45-33 (IGT5)	Always	Below 1 Ω
C11-3 (IGT6) - C45-32 (IGT6)	Always	Below 1 Ω
C51-3 (IGT7) - C45-31 (IGT7)	Always	Below 1 Ω
C53-3 (IGT8) - C45-30 (IGT8)	Always	Below 1 Ω
C4-2 (IGF1) or C45-54 (IGF1) - Body ground	Always	10 kΩ or higher
C15-2 (IGF2) or C45-53 (IGF2) - Body ground	Always	10 kΩ or higher
C6-2 (IGF2) or C45-53 (IGF2) - Body ground	Always	10 kΩ or higher
C13-2 (IGF1) or C45-54 (IGF1) - Body ground	Always	10 kΩ or higher
C8-2 (IGF2) or C45-53 (IGF2) - Body ground	Always	10 kΩ or higher
C11-2 (IGF1) or C45-54 (IGF1) - Body ground	Always	10 kΩ or higher
C51-2 (IGF1) or C45-54 (IGF1) - Body ground	Always	10 kΩ or higher
C53-2 (IGF2) or C45-53 (IGF2) - Body ground	Always	10 kΩ or higher
C4-3 (IGT1) or C45-37 (IGT1) - Body ground	Always	10 kΩ or higher
C15-3 (IGT2) or C45-36 (IGT2) - Body ground	Always	10 kΩ or higher
C6-3 (IGT3) or C45-35 (IGT3) - Body ground	Always	10 kΩ or higher
C13-3 (IGT4) or C45-34 (IGT4) - Body ground	Always	10 kΩ or higher
C8-3 (IGT5) or C45-33 (IGT5) - Body ground	Always	10 kΩ or higher
C11-3 (IGT6) or C45-32 (IGT6) - Body ground	Always	10 kΩ or higher
C51-3 (IGT7) or C45-31 (IGT7) - Body ground	Always	10 kΩ or higher
C53-3 (IGT8) or C45-30 (IGT8) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353, P0354, P0355, P0356, P0357 OR P0358)

Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG) and turn the tester on.
Clear DTCs Click here.
Shuffle the arrangement of the ignition coils (among No. 1 to No. 8 cylinders).

Note

Do not shuffle the connectors.
Perform a simulation test.

Check DTCs displayed on the tester.

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

REPLACE ECM Click here

REPLACE IGNITION COIL ASSEMBLY Click here