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 output, check the ignition coil assembly (No. 1 cylinder) circuit.
If DTC P0352 is output, check the ignition coil assembly (No. 2 cylinder) circuit.
If DTC P0353 is output, check the ignition coil assembly (No. 3 cylinder) circuit.
If DTC P0354 is output, check the 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.
DTC No. | DTC Detection Condition | Trouble Area |
---|---|---|
P0351 P0352 P0353 P0354 |
No IGF signal to the ECM while the engine is running (1 trip detection logic). |
|
Reference: Inspection using an oscilloscope.
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 |
MONITOR DESCRIPTION
If the ECM does not receive any IGF1 signals despite transmitting the IGT signal, it interprets this as a fault in the igniter and stores a DTC.
MONITOR STRATEGY
Related DTCs | P0351: Igniter (cylinder 1) range check/function check P0352: Igniter (cylinder 2) range check/function check P0353: Igniter (cylinder 3) range check/function check P0354: Igniter (cylinder 4) range check/function check |
Required Sensors/Components (Main) | Igniter |
Required Sensors/Components (Related) | Crankshaft position sensor |
Frequency of Operation | Continuous |
Duration | - |
MIL Operation | Immediate |
Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not stored | None |
All of the following conditions are met | - |
Spark cut | Not operating |
Either of the following conditions is met | A or B |
A. Engine speed | 1500 rpm or less |
B. Starter | Off |
Either of the following conditions is met | C or D |
C. Both of the following conditions are met | - |
Engine speed | 500 rpm or less |
Battery voltage | 6 V or higher |
D. All of the following conditions are met | - |
Engine speed | Higher than 500 rpm |
Battery voltage | 10 V or higher |
Number of sparks after CPU reset | 5 sparks or more |
TYPICAL MALFUNCTION THRESHOLDS
All of the following conditions are met | A, B, C and D |
A. Ignition signal fail counter | More than 2 times |
B. Time after condition A is met | 0.256 seconds or more |
C. Ignition signal fail counter after condition B is met | More than 2 times |
D. Ignition switch | ON |
COMPONENT OPERATING RANGE
Confirmed ignition signal input when ignition signal is on to off | 2 times or more |
CONFIRMATION DRIVING PATTERN
Connect the Techstream to the DLC3.
Turn the ignition switch to ON and turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON and turn the Techstream on.
Start the engine.
Idle the engine for 10 seconds or more [A].
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
Read the pending DTCs.
Tech Tips
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input the DTC: P0351, P0352, P0353 or P0354.
Check the DTC judgment result.
Techstream Display | Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
Tech Tips
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 steps [A] and [B] again.
If no pending DTC is output, perform a universal trip and check for permanent DTCs Click here.
Tech Tips
If a permanent DTC is output, the system is malfunctioning.
If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
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 Techstream. 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
CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)
Disconnect the ignition coil assembly connectors.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY)
Disconnect the ignition coil assembly connectors.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
*a | Front view of wire harness connector (to Ignition Coil Assembly) |
NG |
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - IGNITION COIL ASSEMBLY) Click here |
OK |
CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
Disconnect the ignition coil assembly connectors.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354)
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Clear the DTCs Click here.
Shuffle the arrangement of the ignition coil assemblies (among No. 1 to No. 4 cylinders).
Note
Do not change the location of the connectors.
Perform a simulation test.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
Result | Proceed to |
---|---|
Same DTC output | A |
Different ignition coil DTC output | B |
Tech Tips
Perform "Inspection After Repair" after replacing the ignition coil assembly Click here.
B |
REPLACE IGNITION COIL ASSEMBLY Click here |
A |
REPLACE ECM Click here
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - IGNITION COIL ASSEMBLY)
Disconnect the ignition coil assembly connectors.
Remove the No. 1 integration relay from the engine room relay block and junction block assembly.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
REPLACE NO. 1 INTEGRATION RELAY Click here