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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 171 (Engine Control System - SFI System Diagnostics (2 Of 4)) >> 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; DTC P0357 Ignition Coil "G" Primary / Secondary Circuit; DTC P0358 Ignition Coil "H" Primary / Secondary Circuit >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

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.

  1. READ OUT PUT DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG) and turn the Techstream ON
    3. Enter the following menus. Powertrain / Engine / Trouble Codes.
    4. Read the DTCs.

      Result 

      RESULT CHART

      Result Proceed to
      One of DTCs P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358 is output A
      Some of DTCs P0351, P0352, P0353, P0354, P0355, P0356, P0358 are output. B

    B: Go to step  7

    A: Go to Next Step 

  2. PERFORM SIMULATION TEST 
    1. Clear DTCs (See DTC CHECK/CLEAR ).
    2. Change the arrangement of the ignition coils (with igniters)
      NOTE: Do not change the location of the connectors.
    3. Perform a simulation test

      Result 

      RESULT CHART

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

    B: REPLACE IGNITION COIL ASSEMBLY  (See REMOVAL )

    A: Go to Next Step 

  3. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) 
    1. Disconnect the ignition coil connector
    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 CHART

      Tester Connection Switch Condition Specified Condition
      E22-1 (+B) - E22-4 (GND) Engine switch on (IG) 11 to 14 V
      E32-1 (+B) - E32-4 (GND) Engine switch on (IG) 11 to 14 V
      E23-1 (+B) - E23-4 (GND) Engine switch on (IG) 11 to 14 V
      E33-1 (+B) - E33-4 (GND) Engine switch on (IG) 11 to 14 V
      E24-1 (+B) - E24-4 (GND) Engine switch on (IG) 11 to 14 V
      E35-1 (+B) - E35-4 (GND) Engine switch on (IG) 11 to 14 V
      E78-1 (+B) - E78-4 (GND) Engine switch on (IG) 11 to 14 V
      E72-1 (+B) - E72-4 (GND) Engine switch on (IG) 11 to 14 V
      Fig 1: Identifying Ignition Coil Connector Terminal (Power Source)
      G05751583Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the ignition coil connector

    NG: Go to step  7

    OK: Go to Next Step 

  4. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) 
    1. Disconnect the ignition coil connector.
    2. Disconnect the ECM connectors.
    3. Measure the resistance according to the value(s) in the table below

      Standard Resistance (Check for Open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      E22-3 (IGT1) - E5-27 (IGT1) Always Below 1 Ω
      E32-3 (IGT2) - E4-23 (IGT2) Always Below 1 Ω
      E23-3 (IGT3) - E5-26 (IGT3) Always Below 1 Ω
      E33-3 (IGT4) - E4-22 (IGT4) Always Below 1 Ω
      E24-3 (IGT5) - E5-25 (IGT5) Always Below 1 Ω
      E35-3 (IGT6) - E4-21 (IGT6) Always Below 1 Ω
      E78-3 (IGT7) - E5-24 (IGT7) Always Below 1 Ω
      E72-3 (IGT8) - E4-20 (IGT8) Always Below 1 Ω
      Fig 2: Identifying Ignition Coil Connector And ECM Connectors
      G05751584Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      E22-3 (IGT1) or E5-27 (IGT1) - Body ground Always 10 kΩ or higher
      E32-3 (IGT2) or E4-23 (IGT2) - Body ground Always 10 kΩ or higher
      E23-3 (IGT3) or E5-26 (IGT3) - Body ground Always 10 kΩ or higher
      E33-3 (IGT4) or E4-22 (IGT4) - Body ground Always 10 kΩ or higher
      E24-3 (IGT5) or E5-25 (IGT5) - Body ground Always 10 kΩ or higher
      E35-3 (IGT6) or E4-21 (IGT6) - Body ground Always 10 kΩ or higher
      E78-3 (IGT7) or E5-24 (IGT7) - Body ground Always 10 kΩ or higher
      E72-3 (IGT8) or E4-20 (IGT8) - Body ground Always 10 kΩ or higher

      Standard Resistance (Check for Open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      E22-2 (IGF1) - E5-32 (IGF1) Always Below 1 Ω
      E32-2 (IGF2) - E4-28 (IGF2) Always Below 1 Ω
      E23-2 (IGF2) - E4-28 (IGF2) Always Below 1 Ω
      E33-2 (IGF1) - E5-32 (IGF1) Always Below 1 Ω
      E24-2 (IGF2) - E4-28 (IGF2) Always Below 1 Ω
      E35-2 (IGF1) - E5-32 (IGF1) Always Below 1 Ω
      E78-2 (IGF1) - E5-32 (IGF1) Always Below 1 Ω
      E72-2 (IGF2) - E4-28 (IGF2) Always Below 1 Ω

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      E22-2 (IGF1) or E5-32 (IGF1) - Body ground Always 10 kΩ or higher
      E32-2 (IGF2) or E4-28 (IGF2) - Body ground Always 10 kΩ or higher
      E23-2 (IGF2) or E4-28 (IGF2) - Body ground Always 10 kΩ or higher
      E33-2 (IGF1) or E5-32 (IGF1) - Body ground Always 10 kΩ or higher
      E24-2 (IGF2) or E4-28 (IGF2) - Body ground Always 10 kΩ or higher
      E35-2 (IGF1) or E5-32 (IGF1) - Body ground Always 10 kΩ or higher
      E78-2 (IGF1) or E5-32 (IGF1) - Body ground Always 10 kΩ or higher
      E72-2 (IGF2) or E4-28 (IGF2) - Body ground Always 10 kΩ or higher
    4. Reconnect the ignition coil connector and ECM connectors.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  5. INSPECT ECM (IGT1, IGF1 SIGNAL) 
    1. Connect the oscilloscope to ECM
      1. Connect the CH1 to the terminal IGT (1 to 8) and E1.
      2. Connect the CH2 to the terminal IGF1, IGF2 and E1
    2. Check the waveform according to the below.
      ITEM CONTENT CHART

      Item Content
      Terminal CH1 IGT1, IGT4, IGT6 or IGT7 - E1 CH2 IGF1 - E1
      CH1 IGT2, IGT3, IGT5 or IGT8 - E1 CH2 IGF2 - E1
      Equipment Setting 2 V/DIV
      20 msec /DIV
      Condition Cranking or idling
      3. Fig 3: Identifying IGT And IGF Signal Waveform ECM Connectors Pins Terminal
      G05751585Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE ECM  (See REMOVAL )

    OK: Go to Next Step 

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

      Result 

      RESULT CHART

      Display (DTC Output) Proceed to
      P0351, P0352, P0353, P0354, P0355, P0356, P0357 and/or P0358 are output A
      No output B

    B: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS )

    A: REPLACE ECM  (See REMOVAL )

  7. INSPECT IGNITION COIL ASSEMBLY (GROUND CIRCUIT) 
    1. Disconnect the ignition coil connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      E22-4 (GND) - Body ground Always Below 1 Ω
      E32-4 (GND) - Body ground Always Below 1 Ω
      E23-4 (GND) - Body ground Always Below 1 Ω
      E33-4 (GND) - Body ground Always Below 1 Ω
      E24-4 (GND) - Body ground Always Below 1 Ω
      E35-4 (GND) - Body ground Always Below 1 Ω
      E78-4 (GND) - Body ground Always Below 1 Ω
      E72-4 (GND) - Body ground Always Below 1 Ω
      Fig 4: Identifying Ignition Coil Connector Terminal
      G05751586Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reconnect the ignition coil connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - GROUND) 

    OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - IG2 RELAY) 

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