P0353
2AR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0351-P0354: Ignition Coil "A" 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 circuit.
* If DTC P0352 is output, check the No. 2 ignition coil circuit.
* If DTC P0353 is output, check the No. 3 ignition coil circuit.
* If DTC P0354 is output, check the No. 4 ignition coil 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 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 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.
- Reference: Inspection using an oscilloscope.
- While cranking or idling the engine, check the waveform between terminals IGT (1 to 4) 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 stores a DTC.
If the malfunction is not repaired successfully, a DTC is stored 1 second after the engine is next started.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) Reading and Clearing Diagnostic Trouble Codes.
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on [A].
6. Start the engine.
7. Idle the engine for 10 seconds or more [B].
8. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
9. Input the DTC: P0351, P0352, P0353 or P0354.
10. Check the DTC judgment result [C].
HINT
* If the judgment result shows ABNORMAL, the system has a malfunction.
* If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [B] and [C] again.
11. If the test result is UNKNOWN, enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
12. Read Pending DTCs.
HINT
If a pending DTC is output, the system is malfunctioning.
13. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT
* If a permanent DTC is output, the system is malfunctioning.
* If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
Inspect the fuses for circuits related to this system before performing the following 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. INSPECT IGNITION COIL (POWER SOURCE)
(a) Disconnect the ignition coil connectors.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
(d) Reconnect the ignition coil connectors.
NG -- INSPECT IGNITION COIL (GROUND CIRCUIT)
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM)
(a) Disconnect the ignition coil connectors.
(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 connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Shuffle the arrangement of the ignition coils with igniters (among No. 1 to No. 4 cylinders).
NOTICE:
Do not shuffle the connectors.
(f) Perform a simulation test.
(g) Enter the following menus: Powertrain / Engine / Trouble Codes.
(h) Read the DTCs.
Result:
B -- REPLACE IGNITION COIL Removal
A -- REPLACE ECM Removal
4. INSPECT IGNITION COIL (GROUND CIRCUIT)
(a) Disconnect the ignition coil connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Result:
(c) Reconnect the ignition coil connectors.
C -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL - BODY GROUND)
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL - IGNITION SWITCH ASSEMBLY)
A -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL - IG2 RELAY)