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Home >> Lexus >> 2010 >> GS 350 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 171 (Engine Control System (DTCS P0010 - P0368)) >> SFI System >> 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; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit >> Procedure

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; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit: Procedure

WARNING: This page is about a different car, the 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
  1. PERFORM SIMULATION TEST 
    1. Clear the DTC(s). Refer to DTC CHECK / CLEAR .
    2. Change the arrangement of the ignition coils (with igniters).
      NOTE:

      Do not change the location of the connectors.

    3. Reform a simulation test.

      Result

      Display (DTC Output) Proceed to
      Same DTCs (that have been erased) A
      Other DTCs B

    B → REPLACE IGNITION COIL ASSEMBLY (MALFUNCTION CYLINDER) 

    A: Go to next step 

  2. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) 
    1. Disconnect the E22, E32, E23, Z1, E24 or Z2 ignition coil connector.
      Fig 1: Identifying Connector Terminals
      GTY123129Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Specified Condition
      E22-1 - Body ground 9 to 14 V
      E32-1 - Body ground 9 to 14 V
      E23-1 - Body ground 9 to 14 V
      Z1-1 - Body ground 9 to 14 V
      E24-1 - Body ground 9 to 14 V
      Z2-1 - Body ground 9 to 14 V
    4. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Specified Condition
      E22-4 - Body ground Below 1 Ω
      E32-4 - Body ground Below 1 Ω
      E23-4 - Body ground Below 1 Ω
      Z1-4 - Body ground Below 1 Ω
      E24-4 - Body ground Below 1 Ω
      Z2-4 - Body ground Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM (IGT SIGNAL TERMINAL)) 
    1. Disconnect the E22, E32, E23, Z1, E24 or Z2 ignition coil connector.
      Fig 2: Identifying Connector Terminals
      GTY145584Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the ECM E5 and E3 connectors.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Specified Condition
      IGT1 (E22-3) - IGT1 (E5-13) Below 1 Ω
      IGT2 (E32-3) - IGT2 (E3-17) Below 1 Ω
      IGT3 (E23-3) - IGT3 (E5-10) Below 1 Ω
      IGT4 (Z1-3) - IGT4 (E5-12) Below 1 Ω
      IGT5 (E24-3) - IGT5 (E3-27) Below 1 Ω
      IGT6 (Z2-3) - IGT6 (E3-26) Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Specified Condition
      IGT1 (E22-3) or IGT1 (E5-13) - Body ground 10 kΩ or higher
      IGT2 (E32-3) or IGT2 (E3-17) - Body ground 10 kΩ or higher
      IGT3 (E23-3) or IGT3 (E5-10) - Body ground 10 kΩ or higher
      IGT4 (Z1-3) or IGT4 (E5-12) - Body ground 10 kΩ or higher
      IGT5 (E24-3) or IGT5 (E3-27) - Body ground 10 kΩ or higher
      IGT6 (Z2-3) or IGT6 (E3-26) - Body ground 10 kΩ or higher

      Standard resistance (Check for open)

      Tester Connection Specified Condition
      IGF1 (E22-2) - IGF1 (E5-7) Below 1 Ω
      IGF2 (E32-2) - IGF2 (E5-6) Below 1 Ω
      IGF3 (E23-2) - IGF1 (E5-7) Below 1 Ω
      IGF4 (Z1-2) - IGF2 (E5-6) Below 1 Ω
      IGF5 (E24-2) - IGF1 (E5-7) Below 1 Ω
      IGF6 (Z2-2) - IGF2 (E5-6) Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Specified Condition
      IGF1 (E22-2) or IGF1 (E5-7) - Body ground 10 kΩ or higher
      IGF2 (E32-2) or IGF2 (E5-6) - Body ground 10 kΩ or higher
      IGF3 (E23-2) or IGF1 (E5-7)- Body ground 10 kΩ or higher
      IGF4 (Z1-2) or IGF2 (E5-6) - Body ground 10 kΩ or higher
      IGF5 (E24-2) or IGF1 (E5-7) - Body ground 10 kΩ or higher
      IGF6 (Z2-2) or IGF2 (E5-6)- Body ground 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK ECM (IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGF1 AND IGF2 SIGNAL) 
    1. Inspect the ECM using an oscilloscope.
      Fig 3: Identifying IGT And IGF Signal Waveform With ECM Connector E3, E4 And E5
      GTY146106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. While cranking or idling, check the waveform of the ECM connectors.

      Standard

      Tester Connection Specified Condition
      IGF1 (E5-7) - E1 (E4-7)
      IGF2 (E5-6) - E1 (E4-7)
      IGT1 (E5-13) - E1 (E4-7)
      IGT2 (E3-17) - E1 (E4-7)
      IGT3 (E5-10) - E1 (E4-7)
      IGT4 (E5-12) - E1 (E4-7)
      IGT5 (E3-27) - E1 (E4-7)
      IGT6 (E3-26) - E1 (E4-7)      		 Correct waveform is as shown

    NG → REPLACE ECM 

    OK: Go to next step 

  5. CHECK IF DTC OUTPUT RECURS 
    1. Clear the DTC. Refer to DTC CHECK / CLEAR .
    2. Connect Techstream to the DLC3.
    3. Turn the engine switch on (IG) and turn Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    5. Read DTCs.

      Result

      Display (DTC Output) Proceed to
      P0351, P0352, P0353, P0354, P0355 and/or P0356 are output A
      No output B

    B → END 

    A → REPLACE ECM 

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