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
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 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 No. | DTC Detection Condition | Trouble Area |
---|---|---|
P0351 P0352 P0353 P0354 |
No IGF signal is sent to the ECM while engine is running (1 trip detection logic). |
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Tech Tips
These DTCs indicate malfunctions relating to the primary circuit.
If DTC P0351 is output, check the No. 1 ignition coil assembly circuit.
If DTC P0352 is output, check the No. 2 ignition coil assembly circuit.
If DTC P0353 is output, check the No. 3 ignition coil assembly circuit.
If DTC P0354 is output, check the No. 4 ignition coil assembly circuit.
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
CHECK DTC OUTPUT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTC.
Result | Proceed to |
---|---|
DTC P0351, P0352, P0353 or P0354 is output | A |
DTC P0351, P0352, P0353 and/or P0354 are output | B |
B |
CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) Click here |
A |
CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs Click here.
Shuffle arrangement of the ignition coil assemblies (among No. 1 to No. 4 cylinders).
Note
Do not shuffle the connectors.
Perform a simulation test.
Check the DTCs displayed on the GTS.
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 |
CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)
*a | Front view of wire harness connector (to 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 | |||||||||||||||
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Reconnect the ignition coil assembly connectors.
NG |
CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) 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 (Check for Open) | |||||||||||||||
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Standard Resistance (Check for Short) | |||||||||||||||
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Reconnect the ECM connector.
Reconnect the ignition coil assembly connectors.
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM) |
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 (Check for Open) | |||||||||||||||
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Standard Resistance (Check for Short) | |||||||||||||||
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Reconnect the ECM connector.
Reconnect the ignition coil assembly connectors.
OK |
REPLACE ECM Click here |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM) |
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 (Check for Open) | |||||||||||||||
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Reconnect the ignition coil assembly connectors.
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) |
OK |
CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY)
Disconnect the ignition coil assembly connectors.
Remove the integration relay from the engine room No. 1 relay block.
Disconnect the integration relay connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open) | |||||||||||||||
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Standard Resistance (Check for Short) | |||||||||||||||
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Reconnect the integration relay connector.
Reinstall the integration relay.
Reconnect the ignition coil assembly connectors.
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY) |
OK |
INSPECT INTEGRATION RELAY (IGT/INJ RELAY)
Inspect the IGT/INJ relay Click here.
NG |
REPLACE INTEGRATION RELAY |
OK |
CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - INTEGRATION RELAY)
Remove the integration relay from the engine room No. 1 relay block.
Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open) | ||||||
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Standard Resistance (Check for Short) | ||||||
---|---|---|---|---|---|---|
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Reconnect the integration relay connector.
Reinstall the integration relay.
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - INTEGRATION RELAY) |
OK |
CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BODY GROUND)
Remove the integration relay from the engine room No. 1 relay block.
Disconnect the integration relay connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open) | ||||||
---|---|---|---|---|---|---|
|
Reconnect the integration relay connector.
Reinstall the integration relay.
OK |
GO TO ECU POWER SOURCE CIRCUIT Click here |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - BODY GROUND) |