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Home >> Toyota >> 2007 >> FJ Cruiser 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P0351, P0352, P0353, P0354, P0355, P0356: Ignition Coil "A" Primary/Secondary Circuit; Ignition Coil "B" Primary/Secondary Circuit; Ignition Coil "C" Primary/Secondary Circuit; Ignition Coil "D" Primary/Secondary Circuit; Ignition Coil "E" Primary/Secondary Circuit; Ignition Coil "F" Primary/Secondary Circuit >> Inspection Procedure

Inspection Procedure

HINT:

Read freeze frame data using an intelligent tester. Freeze frame data record the engine condition when malfunctions are detected. 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.

  1. CHECK SPARK PLUG AND SPARK OF MISFIRING CYLINDER 
    1. Check the spark plug and sparks of the misfiring cylinder (See ON-VEHICLE INSPECTION ).

    NG:  Go to step  4

    OK: Go TO NEXT STEP 

  2. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM (IGF1 SIGNAL TERMINAL)) 
    1. Disconnect the B5, B6, B7, B20, B23 or B24 ignition coil with igniter connector.
      Fig 1: Identifying B5, B6, B7, B20, B23 Or B24 Ignition Coil With Igniter Connector
      G05108732Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the B1 ECM connector.
    3. Check the resistance.

      Standard Resistance (Check for open) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      IGF (B7-2) - IGF1 (B1-24) Below 1 Ω
      IGF (B24-2) - IGF1 (B1-24)
      IGF (B6-2) - IGF1 (B1-24)
      IGF (B23-2) - IGF1 (B1-24)
      IGF (B5-2) - IGF1 (B1-24)
      IGF (B20-2) - IGF1 (B1-24)

      Standard Resistance (Check for short) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      IGF (B7-2) or IGF1 (B1-24) - Body ground 10 kΩ or higher
      IGF (B24-2) or IGF1 (B1-24) - Body ground
      IGF (B6-2) or IGF1 (B1-24) - Body ground
      IGF (B23-2) or IGF1 (B1-24) - Body ground
      IGF (B5-2) or IGF1 (B1-24) - Body ground
      IGF (B20-2) or IGF1 (B1-24) - Body ground
    4. Reconnect the ECM connector.
    5. Reconnect the ignition coil with igniter connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go TO NEXT STEP 

  3. INSPECT ECM (IGF1 VOLTAGE) 
    1. Disconnect the ignition coil connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage between the terminals of the B1 and B3 ECM connectors.
      Fig 2: Identifying B1 & B3 ECM Connectors
      G05108733Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATIONS

      Tester Connection Specified Condition
      IGF1 (B1-24) - E1 (B3-1) 4.5 to 5.5 V
    4. Reconnect the ignition coil connector.

    NG: REPLACE ECM  (See REMOVAL  )

    OK: REPLACE IGNITION COIL ASSEMBLY 

  4. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM (IGT SIGNAL TERMINAL)) 
    1. Disconnect the B5, B6, B7, B20, B23 or B24 ignition coil with igniter connector.
      Fig 3: Identifying B5, B6, B7, B20, B23 Or B24 Ignition Coil With Igniter Connector
      G05108734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the B1 ECM connector.
    3. Check the resistance.

      Standard Resistance (Check for open) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions:
      IGT1 (B7-3) - IGT1 (B1-8) Below 1 Ω
      IGT2 (B24-3) - IGT2 (B1-9)
      IGT3 (B6-3) - IGT3 (B1 -10)
      IGT4 (B23-3) - IGT4 (B1-11)
      IGT5 (B5-3) - IGT5 (B1-12)
      IGT6 (B20-3) - IGT6 (B1-13)

      Standard Resistance (Check for short) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      IGT1 (B7-3) or IGT1 (B1-8) - Body ground 10 kΩ or higher
      IGT2 (B24-3) or IGT2 (B1-9) - Body ground
      IGT3 (B6-3) or IGT3 (B1-10) - Body ground
      IGT4 (B23-3) or IGT4 (B1-11) - Body ground
      IGT5 (B5-3) or IGT5 (B1-12) - Body ground
      IGT6 (B20-3) or IGT6 (B1-13) - Body ground
    4. Reconnect the ECM connector.
    5. Reconnect the ignition coil with igniter connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go TO NEXT STEP 

  5. INSPECT ECM (IGT1, IGT2, IGT3, IGT4, IGT5, OR IGT6 VOLTAGE) 
    1. Turn the ignition switch ON.
    2. Measure the voltage between the terminals of the B1 and B3 ECM connectors.
      Fig 4: Identifying B1 & B3 ECM Connectors
      G05108735Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATIONS

      Tester Connections Specified Conditions
      IGT1 (B1-8) - E1 (B3-1) 0.1 to 4.5 V
      IGT2 (B1-9) - E1 (B3-1)
      IGT3 (B1-10) - E1 (B3-1)
      IGT4 (B1-11) - E1 (B3-1)
      IGT5 (B1-12) - E1 (B3-1)
      IGT6 (B1-13) - E1 (B3-1)

    NG: REPLACE ECM  (See REMOVAL  )

    OK: Go TO NEXT STEP 

  6. INSPECT ECM (IGT1, IGT2, IGT3, IGT4, IGT5, OR IGT6 VOLTAGE) 
    1. Disconnect the B5, B6, B7, B20, B23 or B24 ignition coil connector.
      Fig 5: Identifying B5, B6, B7, B20, B23 Or B24 Ignition Coil Connector
      G05108736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON.
    3. Measure the voltage between the terminals of the B1 and B3 ECM connectors.

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATIONS

      Tester Connections Specified Conditions
      IGT1 (B1-8) - E1 (B3-1) 4.5 V or more
      IGT2 (B1-9) - E1 (B3-1)
      IGT3 (B1-10) - E1 (B3-1)
      IGT4 (B1-11) - E1 (B3-1)
      IGT5 (B1-12) - E1 (B3-1)
      IGT6 (B1-13) - E1 (B3-1)
    4. Reconnect the ignition coil connector.

    NG:  Go to step  8

    OK: Go TO NEXT STEP 

  7. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) 
    1. Disconnect the B5, B6, B7, B20, B23 or B24 ignition coil with igniter connector.
      Fig 6: Identifying B5, B6, B7, B20, B23 Or B24 Ignition Coil With Igniter Connector
      G05108737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the resistance.

      Standard Resistance (Check for open) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      GND (B7-4) - Body ground Below 1 Ω
      GND (B24-4) - Body ground
      GND (B6-4) - Body ground
      GND (B23-4) - Body ground
      GND (B5-4) - Body ground
      GND (B20-4) - Body ground
    3. Turn the ignition switch ON.
    4. Measure the voltage between the terminals of the wire harness side connector.

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATIONS

      Tester Connections Specified Conditions
      +B (B7-1) - GND (B7-4) 11 to 14 V
      +B (B24-1) - GND (B24-4)
      +B (B6-1) - GND (B6-4)
      +B (B23-1) - GND (B23-4)
      +B (B5-1) - GND (B5-4)
      +B (B20-1) - GND (B20-4)
    5. Reconnect the ignition coil with igniter connector.

    OK: REPLACE IGNITION COIL ASSEMBLY 

    NG: Go TO NEXT STEP 

  8. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - IGNITION SWITCH) 
    1. Disconnect the B5, B6, B7, B20, B23 or B24 ignition coil with igniter connector.
      Fig 7: Identifying B5, B6, B7, B20, B23 Or B24 Ignition Coil With Igniter Connector
      G05108738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the A1 ignition switch connector.
    3. Check the resistance.

      Standard Resistance (Check for open) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      +B (B7-1) - IG2 (A1-6) Below 1 Ω
      +B (B24-1) - IG2 (A1-6)
      +B (B6-1) - IG2 (A1-6)
      +B (B23-1) - IG2 (A1-6)
      +B (B5-1) - IG2 (A1-6)
      +B (B20-1) - IG2 (A1-6)

      Standard Resistance (Check for short) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      +B (B7-1) or IG2 (A1-6) - Body ground 10 kΩ or higher
      +B (B24-1) or IG2 (A1-6) - Body ground
      +B (B6-1) or IG2 (A1-6) - Body ground
      +B (B23-1) or IG2 (A1-6) - Body ground
      +B (B5-1) or IG2 (A1-6) - Body ground
      +B (B20-1) or IG2 (A1-6) - Body ground
    4. Reconnect the ignition coil with igniter connector.
    5. Reconnect the ignition switch connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE IGNITION COIL ASSEMBLY 

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