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 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 off, 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 ECM while engine is running (1 trip detection logic) |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
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 set, check the No. 1 ignition coil circuit.
If DTC P0352 is set, check the No. 2 ignition coil circuit.
If DTC P0353 is set, check the No. 3 ignition coil circuit.
If DTC P0354 is set, check the No. 4 ignition coil circuit.
Read freeze frame data using the intelligent tester. 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 intelligent tester to the DLC3.
Turn the ignition switch to ON.
Turn the tester on.
Enter the following menus: Powertrain / Engine and ECT / DTC.
Read the DTC.
Result | Proceed to |
---|---|
DTC P0351, P0352, P0353 or P0354 is output | A |
DTC P0351, P0352, P0353 or/and 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 intelligent tester to the DLC3.
Turn the ignition switch to ON.
Turn the tester on.
Clear the DTCs Click here.
Shuffle arrangement of the ignition coils with igniters (among No. 1 to No. 4 cylinders).
Note
Do not shuffle the connectors.
Perform a simulation test.
Check the DTCs displayed on the tester.
Result | Proceed to |
---|---|
Same DTC output | A |
Different ignition coil DTC output | B |
B |
REPLACE IGNITION COIL ASSEMBLY Click here |
A |
CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)
*1 | Front view of wire harness connector (to Ignition Coil) |
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 | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Reconnect the ignition coil connectors.
NG |
CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) Click here |
OK |
CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
*1 | Front view of wire harness connector (to Ignition Coil) |
*2 | Front view of wire harness connector (to 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) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Standard Resistance (Check for short) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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)
*1 | Front view of wire harness connector (to Ignition Coil) |
*2 | Front view of wire harness connector (to 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) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Standard Resistance (Check for short) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Reconnect the ECM connector.
Reconnect the ignition coil assembly connectors.
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM) |
OK |
REPLACE ECM Click here
CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)
*1 | Front view of wire harness connector (to Ignition Coil) |
Disconnect the ignition coil assembly connectors.
Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for open) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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 - IGT/INJ RELAY)
*1 | Front view of wire harness connector (to Ignition Coil) |
*2 | Engine Room No. 1 Relay Block |
*3 | IGT/INJ Relay |
Disconnect the ignition coil assembly connectors.
Remove the IGT/INJ 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) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Standard Resistance (Check for short) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Reinstall the IGT/INJ relay.
Reconnect the ignition coil assembly connectors.
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL - IGT/INJ RELAY) |
OK |
CHECK FUEL INJECTOR CIRCUIT Click here