P0352

2ZR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0351-P0354: 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

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, the igniter sends back an ignition confirmation (IGF) signal to the ECM, for each cylinder ignition.

HINT
- These DTCs indicate malfunctions relating to the primary circuit.
- If DTC P0351 is stored, check the No. 1 ignition coil circuit.
- If DTC P0352 is stored, check the No. 2 ignition coil circuit.
- If DTC P0353 is stored, check the No. 3 ignition coil circuit.
- If DTC P0354 is stored, check the No. 4 ignition coil circuit.

- 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 DTCs (even if no DTCs are stored, perform the clear DTC operation).

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 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 N/A, perform steps [A] through [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

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 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

1. INSPECT IGNITION COIL (POWER SOURCE)

(a) Disconnect the ignition coil connectors.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for Open):

(c) Turn the ignition switch to ON.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(e) Reconnect the ignition coil connectors.

NG -- CHECK HARNESS AND CONNECTOR (IGNITION COIL - INTEGRATION RELAY)
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 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 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) Drive in vehicle the according with the driving pattern described in Confirmation Driving Pattern.

(g) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(h) Read the DTCs.

Result:

B -- REPLACE IGNITION COIL Removal

A -- REPLACE ECM Removal

4. CHECK HARNESS AND CONNECTOR (IGNITION COIL - INTEGRATION RELAY)

(a) Disconnect the ignition coil connectors.

(b) Remove the integration relay (IG2 relay) from the engine room relay block Removal.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for Open):

Standard Resistance (Check for Short):

(d) Reinstall the integration relay.

(e) Reconnect the ignition coil connectors.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- CHECK ECM POWER SOURCE CIRCUIT ECM Power Source Circuit