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

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.

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 the current 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.

DTC No.	DTC Detection Condition	Trouble Area
P0351 P0352 P0353 P0354 P0355 P0356	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 6) between ignition coil assembly and ECM No. 1 to No. 6 ignition coil assembly ECM

DTC No.

DTC Detection Condition

Trouble Area

P0351

P0352

P0353

P0354

P0355

P0356

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 6) between ignition coil assembly and ECM
No. 1 to No. 6 ignition coil assembly
ECM

*a 2 V/DIV.

*b 20 msec./DIV.
Reference: Inspection using an oscilloscope.

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

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

Item	Content
Terminal	CH1: IGT1, IGT2, IGT3, IGT4, IGT5, IGT6 - E1 CH2: IGF1 - E1
Equipment Setting	2 V/DIV. 20 msec./DIV.
Condition	Cranking or idling

Item

Content

Terminal

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

CH2: IGF1 - E1

Equipment Setting

2 V/DIV.

20 msec./DIV.

Condition

Cranking or idling

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 a DTC.

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

WIRING DIAGRAM

Figure 1. for Manual Transmission Models

Figure 2. for Automatic Transmission Models

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips

Read freeze frame data using the GTS. 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)

Text in Illustration

*a
Front view of wire harness connector

(to Ignition Coil with Igniter)

Disconnect the ignition coil assembly 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

C130-4 (GND) - Body ground Always Below 1 Ω

C140-4 (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

Turn the ignition switch to ON.

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) Ignition switch ON 11 to 14 V

C15-1 (+B) - C15-4 (GND) Ignition switch ON 11 to 14 V

C130-1 (+B) - C130-4 (GND) Ignition switch ON 11 to 14 V

C140-1 (+B) - C140-4 (GND) Ignition switch ON 11 to 14 V

C8-1 (+B) - C8-4 (GND) Ignition switch ON 11 to 14 V

C11-1 (+B) - C11-4 (GND) Ignition switch ON 11 to 14 V

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)

Disconnect the ignition coil assembly connector.

Disconnect the ECM connector.

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

Standard Resistance

for Manual Transmission Models

Tester Connection Condition Specified Condition

C4-2 (IGF) - C45-104 (IGF1) Always Below 1 Ω

C15-2 (IGF) - C45-104 (IGF1) Always Below 1 Ω

C130-2 (IGF) - C45-104 (IGF1) Always Below 1 Ω

C140-2 (IGF) - C45-104 (IGF1) Always Below 1 Ω

C8-2 (IGF) - C45-104 (IGF1) Always Below 1 Ω

C11-2 (IGF) - C45-104 (IGF1) Always Below 1 Ω

C4-3 (IGT1) - C45-40 (IGT1) Always Below 1 Ω

C15-3 (IGT2) - C45-39 (IGT2) Always Below 1 Ω

C130-3 (IGT3) - C45-38 (IGT3) Always Below 1 Ω

C140-3 (IGT4) - C45-37 (IGT4) Always Below 1 Ω

C8-3 (IGT5) - C45-36 (IGT5) Always Below 1 Ω

C11-3 (IGT6) - C45-35 (IGT6) Always Below 1 Ω

C4-2 (IGF) or C45-104 (IGF1) - Body ground Always 10 kΩ or higher

C15-2 (IGF) or C45-104 (IGF1) - Body ground Always 10 kΩ or higher

C130-2 (IGF) or C45-104 (IGF1) - Body ground Always 10 kΩ or higher

C140-2 (IGF) or C45-104 (IGF1) - Body ground Always 10 kΩ or higher

C8-2 (IGF) or C45-104 (IGF1) - Body ground Always 10 kΩ or higher

C11-2 (IGF) or C45-104 (IGF1) - Body ground Always 10 kΩ or higher

C4-3 (IGT1) or C45-40 (IGT1) - Body ground Always 10 kΩ or higher

C15-3 (IGT2) or C45-39 (IGT2) - Body ground Always 10 kΩ or higher

C130-3 (IGT3) or C45-38 (IGT3) - Body ground Always 10 kΩ or higher

C140-3 (IGT4) or C45-37 (IGT4) - Body ground Always 10 kΩ or higher

C8-3 (IGT5) or C45-36 (IGT5) - Body ground Always 10 kΩ or higher

C11-3 (IGT6) or C45-35 (IGT6) - Body ground Always 10 kΩ or higher

for Automatic Transmission Models

Tester Connection Condition Specified Condition

C4-2 (IGF) - C45-54 (IGF1) Always Below 1 Ω

C15-2 (IGF) - C45-54 (IGF1) Always Below 1 Ω

C130-2 (IGF) - C45-54 (IGF1) Always Below 1 Ω

C140-2 (IGF) - C45-54 (IGF1) Always Below 1 Ω

C8-2 (IGF) - C45-54 (IGF1) Always Below 1 Ω

C11-2 (IGF) - C45-54 (IGF1) Always Below 1 Ω

C4-3 (IGT1) - C45-37 (IGT1) Always Below 1 Ω

C15-3 (IGT2) - C45-36 (IGT2) Always Below 1 Ω

C130-3 (IGT3) - C45-35 (IGT3) Always Below 1 Ω

C140-3 (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

C4-2 (IGF) or C45-54 (IGF1) - Body ground Always 10 kΩ or higher

C15-2 (IGF) or C45-54 (IGF1) - Body ground Always 10 kΩ or higher

C130-2 (IGF) or C45-54 (IGF1) - Body ground Always 10 kΩ or higher

C140-2 (IGF) or C45-54 (IGF1) - Body ground Always 10 kΩ or higher

C8-2 (IGF) or C45-54 (IGF1) - Body ground Always 10 kΩ or higher

C11-2 (IGF) or C45-54 (IGF1) - 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

C130-3 (IGT3) or C45-35 (IGT3) - Body ground Always 10 kΩ or higher

C140-3 (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

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

Connect the GTS to the DLC3.

Turn the ignition switch to ON and turn the GTS on.

Clear the DTCs Click here.

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

Note

Do not shuffle the connectors.

Perform a simulation test.

Check the DTCs output on the GTS.

Result

Result Proceed to

Same DTC output A

Different ignition coil DTC output B

A
REPLACE ECM Click here

B
REPLACE IGNITION COIL ASSEMBLY Click here