Toyota Venza: Ignition Coil "A" Primary / Secondary Circuit (P0351-P0354)

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.

• Reference: Inspection using an oscilloscope.

• While idling the engine, check the waveform between terminals IGT (1 to 4) and E1, and IGF1 and E1 of the ECM connector.

  Terminal No. (Symbol)	Tool Setting	Condition
  B58-108 (IGT1) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling
  B58-107 (IGT2) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling
  B58-106 (IGT3) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling
  B58-105 (IGT4) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling
  B58-23 (IGF1) - B58-104 (E1)	2 V/DIV, 20 ms/DIV	Idling

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) (See page ).


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 / 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 / Utility / All Readiness.
11. Input the DTC: P0351, P0352, P0353 or P0354.
12. Check the DTC judgment result.

    Techstream Display	Description
    NORMAL	DTC judgment completed System normal
    ABNORMAL	DTC judgment completed System abnormal
    INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
    N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    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] and [B] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs (See page ).
    

    HINT:

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.

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