P0354
2GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0351-P0356: Ignition Coil "A" Primary / Secondary Circuit
DTC P0351 - Ignition Coil "A" Primary / Secondary Circuit
DTC P0352 - Ignition Coil "B" Primary / Secondary Circuit
DTC P0353 - Ignition Coil "C" Primary / Secondary Circuit
DTC P0354 - Ignition Coil "D" Primary / Secondary Circuit
DTC P0355 - Ignition Coil "E" Primary / Secondary Circuit
DTC P0356 - Ignition Coil "F" Primary / Secondary Circuit
CAUTION / NOTICE / HINT
HINT:
- These DTCs indicate malfunctions relating to the primary circuit.
- If DTC P0351 is set, check the No. 1 ignition coil with igniter circuit.
- If DTC P0352 is set, check the No. 2 ignition coil with igniter circuit.
- If DTC P0353 is set, check the No. 3 ignition coil with igniter circuit.
- If DTC P0354 is set, check the No. 4 ignition coil with igniter circuit.
- If DTC P0355 is set, check the No. 5 ignition coil with igniter circuit.
- If DTC P0356 is set, check the No. 6 ignition coil with igniter 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. High-voltage is generated in the secondary wiring and then applied directly to each spark plug. The sparks of the spark plugs pass from the center electrodes 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, high- 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.
Reference: Inspection using an oscilloscope
While cranking or idling, check the waveform between terminals IGT (1 to 6) and E1, and IGF1 and E1 of the ECM connector.
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 sets a DTC.
If the malfunction is not repaired successfully, a DTC is set 1 second after the engine is next started.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT: 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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
PROCEDURE
1. CHECK DTC OUTPUT
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch on (IG).
(c) Turn the tester on.
(d) Enter the following menu items: Powertrain / Engine and ECT / DTC.
(e) Read the DTC.
Result:
B -- INSPECT FUSE (INJ NO. 1 FUSE)
A -- Continue to next step.
2. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353, P0354, P0355 OR P0356)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch on (IG).
(c) Turn the tester on.
(d) Clear the DTCs DTC Check / Clear.
(e) Shuffle arrangement of the ignition coils with igniters (among No. 1 to No. 4 cylinders).
NOTE: Do not shuffle the connectors.
(f) Perform a simulation test.
(g) Check the DTCs displayed on the tester.
Result:
B -- REPLACE IGNITION COIL ASSEMBLY (MALFUNCTIONING CYLINDER)
A -- Continue to next step.
3. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE)
(a) Disconnect the ignition coil connector of malfunctioning cylinder.
(b) Turn the ignition switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:
(e) Reconnect the ignition coil connector.
NG -- INSPECT FUSE (INJ NO. 1 FUSE)
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
(a) Disconnect the ignition coil connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance (Check for open):
Standard resistance (Check for short):
(d) Reconnect the ECM connector.
(e) Reconnect the ignition coil connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
(a) Disconnect the ignition coil connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance (Check for open):
Standard resistance (Check for short):
(d) Reconnect the ignition coil connector.
(e) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
OK -- REPLACE ECM
6. INSPECT FUSE (INJ NO. 1 FUSE)
(a) Remove the INJ No. 1 fuse from the engine room relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance (Check for open):
(c) Reinstall the INJ No. 1 fuse.
NG -- REPLACE FUSE (INJ NO. 1 FUSE)
OK -- Continue to next step.
7. INSPECT RELAY (IG2 RELAY)
(a) Remove the IG2 relay from the engine room relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
(c) Reinstall the IG2 relay.
NG -- REPLACE RELAY
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - INJ NO. 1 FUSE)