2NZ-FE ENGINE CONTROL  SFI SYSTEM  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

HINT:
·

These DTCs indicate malfunctions relating to the primary circuit.

·

If DTC P0351 is output, check the No. 1 ignition coil assembly (No. 1 cylinder) circuit.

·

If DTC P0352 is output, check the No. 2 ignition coil assembly (No. 2 cylinder) circuit.

·

If DTC P0353 is output, check the No. 3 ignition coil assembly (No. 3 cylinder) circuit.

·

If DTC P0354 is output, check the No. 4 ignition coil assembly (No. 4 cylinder) 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 assembly 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 spark of the spark plugs passes 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 supplied 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.

A288665E03
4.5,0.781 4.417,0.365 4.417,0.365 4.333,0.365 true 5.365,0.531 5.583,0.406 5.583,0.406 5.719,0.406 true 0.469,0.875 2.26,1.073 1.792,0.198 10 Crankshaft Position Sensor 0.448,2.677 2.24,2.875 1.792,0.198 10 Camshaft Position Sensor 0.323,3.708 2.25,4.406 1.927,0.698 10 Other Sensors (Engine Coolant Temperature Sensor, Mass Air Flow Meter Sub-assembly, Throttle Position Sensor, etc.) 3.031,0.823 3.385,1 0.354,0.177 10 IGT1 3.031,1.135 3.385,1.313 0.354,0.177 10 IGF1 5.115,0.073 6.438,0.26 1.323,0.188 10 from Battery 3.927,0.271 4.417,0.5 0.49,0.229 10 Igniter 5.76,0.333 7.146,0.896 1.385,0.563 10 Ignition Coil Assembly (No. 1 Cylinder) 5.74,1.25 6.875,1.469 1.135,0.219 10 No. 1 Spark Plug 5.74,2.469 6.875,2.688 1.135,0.219 10 No. 2 Spark Plug 5.719,3.781 6.854,4 1.135,0.219 10 No. 3 Spark Plug 5.75,5.104 6.885,5.323 1.135,0.219 10 No. 4 Spark Plug 3,2.156 3.354,2.333 0.354,0.177 10 IGT2 3,3.479 3.354,3.656 0.354,0.177 10 IGT3 3.031,4.792 3.385,4.969 0.354,0.177 10 IGT4 3.813,2.771 6.271,2.958 2.458,0.188 10 Ignition Coil Assembly (No. 2 Cylinder) 3.823,4.094 6.281,4.281 2.458,0.188 10 Ignition Coil Assembly (No. 3 Cylinder) 3.781,5.375 6.24,5.563 2.458,0.188 10 Ignition Coil Assembly (No. 4 Cylinder) 2.854,5.323 3.208,5.5 0.354,0.177 10 ECM

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0351 Ignition Coil "A" Primary / Secondary Circuit No IGF signal to ECM while the engine is running (1 trip detection logic).
·

Ignition system

·

Open or short in IGF1 or IGT1 circuit between ignition coil assembly and ECM

·

No. 1 ignition coil assembly

·

ECM


Comes on DTC stored
P0352 Ignition Coil "B" Primary / Secondary Circuit No IGF signal to ECM while the engine is running (1 trip detection logic).
·

Ignition system

·

Open or short in IGF1 or IGT2 circuit between ignition coil assembly and ECM

·

No. 2 ignition coil assembly

·

ECM


Comes on DTC stored
P0353 Ignition Coil "C" Primary / Secondary Circuit No IGF signal to ECM while the engine is running (1 trip detection logic).
·

Ignition system

·

Open or short in IGF1 or IGT3 circuit between ignition coil assembly and ECM

·

No. 3 ignition coil assembly

·

ECM


Comes on DTC stored
P0354 Ignition Coil "D" Primary / Secondary Circuit No IGF signal to ECM while the engine is running (1 trip detection logic).
·

Ignition system

·

Open or short in IGF1 or IGT4 circuit between ignition coil assembly and ECM

·

No. 4 ignition coil assembly

·

ECM


Comes on DTC stored

A285441E08
2.906,1 3.333,1.25 0.427,0.25 10 GND 2.896,1.615 3.292,1.833 0.396,0.219 10 GND 0.104,0.688 0.448,1.073 0.344,0.385 10 CH1 (IGT) 0.104,1.198 0.448,1.594 0.344,0.396 10 CH2 (IGF) 1.281,1.896 2.052,2.073 0.771,0.177 10 20 ms./DIV. 0.042,0.115 0.708,0.281 0.667,0.167 10 2 V/DIV.

Reference: Inspection using an oscilloscope

HINT:

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


ECM Terminal Name CH1: Between IGT (1 to 4) and E1
CH2: Between IGF1 and E1
Tester Range 2 V/DIV., 20 ms./DIV.
Condition Idling with warm engine

MONITOR DESCRIPTION

A212405E34
1.781,1.646 2.177,1.823 0.396,0.177 10 false ECM 2.958,1.302 3.229,1.49 0.271,0.188 10 false IGT 2.948,1.729 3.229,1.885 0.281,0.156 10 false IGF 4.156,1.51 4.594,1.656 0.438,0.146 10 false Igniter 5.396,1.344 6.167,1.521 0.771,0.177 10 false Ignition Coil 4.469,2.354 5.875,2.542 1.406,0.188 10 false Ignition Coil Assembly 0.208,3.115 1.146,3.448 0.938,0.333 10 false Ignition Signal (IGT) 1.646,3.542 2.135,3.729 0.49,0.188 10 false Normal 1.385,3.948 2.156,4.135 0.771,0.188 10 false Malfunction 0.188,3.896 1.156,4.417 0.969,0.521 10 false Ignition Confirmation Signal (IGF) 3.635,4.51 5.021,4.76 1.385,0.25 10 false Circuit Malfunction 5.948,4.969 6.313,5.167 0.365,0.198 10 false Time

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.

MONITOR STRATEGY

Required Sensors/Components (Main) Igniter (Cylinder 1 to 4)
Required Sensors/Components (Related) Crankshaft position sensor
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN

1.

Connect the GTS to the DLC3.

2.

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

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the ignition switch off and wait for at least 30 seconds.

5.

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

6.

Start the engine.

7.

Idle the engine for 10 seconds or more.

8.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

9.

Read the pending DTCs.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



10.

Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

11.

Input the DTC: P0351, P0352, P0353 or P0354.

12.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System normal


ABNORMAL
·

DTC judgment completed

·

System abnormal


INCOMPLETE
·

DTC judgment not completed

·

Perform driving pattern after confirming DTC enabling conditions


N/A
·

Unable to perform DTC judgment

·

Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit



HINT:
·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.




WIRING DIAGRAM

A298556E31
0.385,4.521 1,4.688 0.615,0.167 10 false FL MAIN 0.552,5.292 1.167,5.458 0.615,0.167 10 false Battery 0.823,3.354 2.906,3.771 2.083,0.417 10 false from Ignition Switch Assembly 0.396,2.271 1.01,2.438 0.615,0.167 10 false IG2 1.375,1.458 1.99,1.625 0.615,0.167 10 false IG2 1.104,0.542 1.719,0.708 0.615,0.167 10 false 3 1.854,0.542 2.469,0.708 0.615,0.167 10 false 5 1.104,1.063 1.719,1.229 0.615,0.167 10 false 2 1.833,1.063 2.448,1.229 0.615,0.167 10 false 1 3.802,0.542 3.99,0.74 0.188,0.198 10 false 1 3.802,0.844 3.99,1.042 0.188,0.198 10 false 4 4.969,0.854 5.156,1.052 0.188,0.198 10 false 2 4.969,0.552 5.156,0.75 0.188,0.198 10 false 3 3.563,1.177 3.927,1.365 0.365,0.188 10 false B25 3.573,1.354 5.417,1.563 1.844,0.208 10 false No. 1 Ignition Coil Assembly 3.573,2.844 3.938,3.031 0.365,0.188 10 false B26 3.552,4.583 5.396,4.792 1.844,0.208 10 false No. 3 Ignition Coil Assembly 3.563,4.427 3.927,4.615 0.365,0.188 10 false B27 3.552,3.021 5.396,3.229 1.844,0.208 10 false No. 2 Ignition Coil Assembly 3.583,5.948 3.948,6.135 0.365,0.188 10 false B28 3.573,6.135 5.417,6.344 1.844,0.208 10 false No. 4 Ignition Coil Assembly 3.792,2.469 3.979,2.667 0.188,0.198 10 false 4 3.781,2.146 3.969,2.344 0.188,0.198 10 false 1 4.979,2.146 5.167,2.344 0.188,0.198 10 false 3 4.969,2.479 5.156,2.677 0.188,0.198 10 false 2 4.99,3.74 5.177,3.938 0.188,0.198 10 false 3 4.979,4.052 5.167,4.25 0.188,0.198 10 false 2 3.792,3.75 3.979,3.948 0.188,0.198 10 false 1 3.792,4.063 3.979,4.26 0.188,0.198 10 false 4 3.792,5.281 3.979,5.479 0.188,0.198 10 false 1 3.792,5.667 3.979,5.865 0.188,0.198 10 false 4 4.99,5.271 5.177,5.469 0.188,0.198 10 false 3 4.99,5.667 5.177,5.865 0.188,0.198 10 false 2 3.969,0.625 4.333,0.813 0.365,0.188 10 false +B 3.979,2.26 4.344,2.448 0.365,0.188 10 false +B 3.948,0.948 4.313,1.135 0.365,0.188 10 false GND 4.656,0.948 5.021,1.135 0.365,0.188 10 false IGF 4.594,0.635 4.958,0.823 0.365,0.188 10 false IGT1 4.604,2.271 4.969,2.458 0.365,0.188 10 false IGT2 4.594,3.844 4.958,4.042 0.365,0.198 10 false IGT3 4.583,5.385 4.948,5.583 0.365,0.198 10 false IGT4 3.958,3.844 4.323,4.031 0.365,0.188 10 false +B 3.969,5.365 4.333,5.552 0.365,0.188 10 false +B 3.958,2.563 4.323,2.75 0.365,0.188 10 false GND 4.677,2.563 5.042,2.75 0.365,0.188 10 false IGF 3.958,4.177 4.323,4.365 0.365,0.188 10 false GND 3.958,5.792 4.323,5.979 0.365,0.188 10 false GND 4.667,4.167 5.031,4.354 0.365,0.188 10 false IGF 4.656,5.781 5.021,5.969 0.365,0.188 10 false IGF 5.854,0.552 6.219,0.74 0.365,0.188 10 false 85 5.875,2.146 6.24,2.333 0.365,0.188 10 false 84 5.875,3.75 6.24,3.938 0.365,0.188 10 false 83 5.875,5.271 6.24,5.458 0.365,0.188 10 false 82 5.875,5.677 6.24,5.865 0.365,0.188 10 false 81 6.167,6.292 6.531,6.479 0.365,0.188 10 false B56 6.448,6.292 6.813,6.479 0.365,0.188 10 false ECM 6.125,0.656 6.49,0.844 0.365,0.188 10 false IGT1 6.146,2.25 6.51,2.438 0.365,0.188 10 false IGT2 6.135,3.854 6.5,4.052 0.365,0.198 10 false IGT3 6.125,5.354 6.49,5.552 0.365,0.198 10 false IGT4 6.115,5.771 6.479,5.958 0.365,0.188 10 false IGF1

CAUTION / NOTICE / HINT

NOTICE:

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


HINT:

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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

1.CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)
a.

Disconnect the ignition coil assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
B25-4 (GND) - Body ground Always Below 1 Ω
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



Result:
Proceed to
OK
NG



OK

2.CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY)
A194110C64
0.177,2.063 0.51,2.323 0.333,0.26 0.604,2.063 0.938,2.323 0.333,0.26 0.604,2.427 0.938,2.688 0.333,0.26 0.188,2.427 0.521,2.688 0.333,0.26 1.021,2.948 1.302,2.5 false 2.406,2.938 2.156,2.51 false 0.323,0.292 0.813,0.74 0.49,0.448 10 false *a 0.667,2.135 1.188,2.51 0.521,0.375 10 false B26 0.24,2.135 0.76,2.448 0.521,0.313 10 false B25 0.25,2.49 0.708,2.875 0.458,0.385 10 false B27 0.677,2.49 1.052,2.729 0.375,0.24 10 false B28 0.927,2.979 1.292,3.198 0.365,0.219 10 false +B 2.271,2.979 2.635,3.198 0.365,0.219 10 false GND
*a Front view of wire harness connector
(to Ignition Coil Assembly)


a.

Disconnect the ignition coil assembly connector.


b.

Turn the ignition switch to ON.


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
B25-1 (+B) - B25-4 (GND) Ignition switch ON 11 to 14 V
B26-1 (+B) - B26-4 (GND) Ignition switch ON 11 to 14 V
B27-1 (+B) - B27-4 (GND) Ignition switch ON 11 to 14 V
B28-1 (+B) - B28-4 (GND) Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)

NG

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

3.CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
a.

Disconnect the ignition coil assembly connector.


b.

Disconnect the ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
B25-2 (IGF) - B56-81 (IGF1) Always Below 1 Ω
B26-2 (IGF) - B56-81 (IGF1) Always Below 1 Ω
B27-2 (IGF) - B56-81 (IGF1) Always Below 1 Ω
B28-2 (IGF) - B56-81 (IGF1) Always Below 1 Ω
B25-3 (IGT1) - B56-85 (IGT1) Always Below 1 Ω
B26-3 (IGT2) - B56-84 (IGT2) Always Below 1 Ω
B27-3 (IGT3) - B56-83 (IGT3) Always Below 1 Ω
B28-3 (IGT4) - B56-82 (IGT4) Always Below 1 Ω
B25-2 (IGF) or B56-81 (IGF1) - Body ground Always 10 kΩ or higher
B26-2 (IGF) or B56-81 (IGF1) - Body ground Always 10 kΩ or higher
B27-2 (IGF) or B56-81 (IGF1) - Body ground Always 10 kΩ or higher
B28-2 (IGF) or B56-81 (IGF1) - Body ground Always 10 kΩ or higher
B25-3 (IGT1) or B56-85 (IGT1) - Body ground Always 10 kΩ or higher
B26-3 (IGT2) or B56-84 (IGT2) - Body ground Always 10 kΩ or higher
B27-3 (IGT3) or B56-83 (IGT3) - Body ground Always 10 kΩ or higher
B28-3 (IGT4) or B56-82 (IGT4) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs
50002 234

e.

Shuffle the arrangement of the ignition coil assemblies (among No. 1 to No. 4 cylinders).

NOTICE:

Do not change the location of the connectors.



f.

Perform a simulation test.


g.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


h.

Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes
50001 234
Result:
Result Proceed to
Same DTC output A
Different ignition coil DTC output B




A

REPLACE ECM

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>ECM>REMOVAL


B

REPLACE IGNITION COIL ASSEMBLY

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>IGNITION COIL AND SPARK PLUG>REMOVAL