P0353
2ZR-FE ENGINE CONTROL: 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 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.
A Direct Ignition System (DIS) is used on this vehicle.
The DIS is an ignition system in which each cylinder is ignited by it's own ignition coil and spark plug. The secondary wiring of each ignition coil generates a powerful voltage which is applied directly to each spark plug. The spark passes from the center electrode of the spark plug to the ground electrode.
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 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
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 operation) 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.
6. Start the engine.
7. Idle the engine for 10 seconds or more [A].
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
9. Read the pending DTCs.
HINT
* If a pending DTC is output, the system is malfunctioning.
* If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0351, P0352, P0353 or P0354.
12. Check the DTC judgment result.
HINT
* 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 UNKNOWN, perform steps [A] and [B] again.
13. If 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
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 HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)
(a) Disconnect the ignition coil assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
(c) Reconnect the ignition coil assembly connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)
OK -- Continue to next step.
2. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)
(a) Disconnect the ignition coil assembly 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 assembly connectors.
NG -- CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY)
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
(a) Disconnect the ignition coil assembly 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 assembly connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM)
OK -- Continue to next step.
4. 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 DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Shuffle 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 and ECT / Trouble Codes.
(h) Read the DTCs.
Result:
B -- REPLACE IGNITION COIL ASSEMBLY Removal
A -- REPLACE ECM Removal
5. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY)
(a) Disconnect the ignition coil assembly connectors.
(b) Remove the integration relay from the engine room relay block.
(c) Disconnect the integration relay connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
(e) Reconnect the integration relay connector.
(f) Reinstall the integration relay.
(g) Reconnect the ignition coil assembly connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY)
OK -- CHECK ECM POWER SOURCE CIRCUIT Component Tests and General Diagnostics