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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 463 (Engine Control System (SFI) - Diagnostics) >> 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 >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.

  1. : PERFORM SIMULATION TEST 
    1. Clear the DTC (See DTC CHECK/CLEAR )
    2. Shuffle arrangement of the ignition coil and igniters.
      NOTE: Do not shuffle the connectors.
    3. Perform the simulation test.

      Result: 

      RESULT REFERENCE

      Display (DTC output) Proceed to
      The same DTC is output again A
      The other DTC is output B
    • B : REPLACE IGNITION COIL ASSY (See  IGNITION SYSTEM  ) 
    • A : GO TO NEXT STEP 
  2. : INSPECT ECM (IGT1, IGT2, IGT3, IGT4 AND IGF SIGNAL) 
    1. Inspection using the oscilloscope.
    2. During cranking or idling, check the waveform between terminals IGT1 to IGT4 and E1, IGF and E1 of the ECM connector.
      Fig 1: Identifying ECM Connector Terminals
      G03946646Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      ITEM DESCRIPTION

      Item Contents
      Terminal CH1: IGT1, IGT2, IGT3, IGT4 - E1 CH2: IGF-E1
      Equipment Setting 2V/Division, 20ms/Division
      Condition While the engine is cranking or idling

    HINT:

    Correct waveform is as shown in the diagram on the left.

    Fig 2: Waveform Graph
    G03946647Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • NG : REPLACE ECM (See  REPLACEMENT  ) 
    • OK : GO TO NEXT STEP 
  3. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSY - ECM) 
    1. Disconnect the I2, I3, I4 or I5 ignition coil and igniter connector.
    2. Disconnect the E3 ECM connector.
    3. Check the resistance between the wire harness side connectors.
      Fig 3: Identifying E3 ECM Connector Terminals
      G03946648Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Identifying Ignition Coil And Igniter Connector Terminals
      G03946649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard (Check for open): 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      IGF (I2-2) - IGF (E3-23) Below 1Ω
      IGF (I3-2) - IGF (E3-23)
      IGF (I4-2) - IGF (E3-23)
      IGF (I5-2) - IGF (E3-23)

      Standard (Check for open): 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      IGF (I2-3) - IGF (E3-8) Below 1Ω
      IGF (I3-3) - IGF (E3-9)
      IGF (I4-3) - IGF (E3-10)
      IGF (I5-3) - IGF (E3-11)

      Standard (Check for short): 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      IGF (I2-2) or IGF (E3-23) - Body ground 10 kΩ or higher
      IGF (I3-2) or IGF (E3-23) - Body ground
      IGF (I4-2) or IGF (E3-23) - Body ground
      IGF (I5-2) or IGF (E3-23) - Body ground

      Standard (Check for short): 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      IGF (I2-3) or IGF (E3-8) - Body ground 10 kΩ or higher
      IGF (I3-3) or IGF (E3-9) - Body ground
      IGF (I4-3) or IGF (E3-10) - Body ground
      IGF (I5-3) or IGF (E3-11) - Body ground
    4. Reconnect the ECM connector.
    5. Reconnect the ignition coil and igniter connector.
    • NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 
    • OK : GO TO NEXT STEP 
  4. : INSPECT IGNITION COIL ASSY (POWER SOURCE) 
    Fig 5: Identifying Ignition Coil And Igniter Connector Terminals
    G03946650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the I2, I3, I4 or I5 ignition coil and igniter connector.
    2. Check the resistance between the wire harness side connectors.

      Standard (Check for open): 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      GND (I1-4) - Body ground Below 1 Ω
      GND (I2-4) - Body ground
      GND (I3-4) - Body ground
      GND (I4-4) - Body ground
    3. Turn the ignition switch ON position.
    4. Measure the voltage between the terminal of the wire harness side connector and body ground.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      +B (I2-1)-GND (I2-4) 9 to 14 V
      +B (I3-1)-GND (I3-4)
      +B (I4-1)-GND (I4-4)
      +B (I5-1)-GND (I5-4)
    5. Reconnect the ignition coil and igniter connector.
    • OK : REPLACE IGNITION COIL ASSY (See  IGNITION SYSTEM  ) 
    • NG : GO TO NEXT STEP 
  5. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSY - IGNITION SWITCH) 
    Fig 6: Identifying I2, I3, I4 Or I5 Ignition Coil And Igniter Connector
    G03946651Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 7: Identifying 110 Ignition Coil And Igniter Connector
    G03946652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the I2, I3, I4 or I5 ignition coil and igniter connector.
    2. Disconnect the I10 ignition switch connector.
    3. Check the resistance between the wire harness side connectors.

      Standard (Check for open): 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      +B (I2-1)-IG2 (I10-6) 9 to 14 V
      +B (I3-1)-IG2 (I10-6)
      +B (I4-1)-IG2 (I10-6)
      +B (I5-1)-GND (I10-6)

      Standard (Check for short): 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      +B (I2-1) or IG2 (I10-6) - Body ground 10 kΩ or higher
      +B (I3-1) or IG2 (I10-6) - Body ground
      +B (I4-1) or IG2 (I10-6) - Body ground
      +B (I5-1) or IG2 (I10-6) - Body ground
    4. Reconnect the ignition coil and igniter connector.
    5. Reconnect the ignition switch connector.
    • NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 
    • OK : REPLACE IGNITION COIL ASSY (See  IGNITION SYSTEM  ) 
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