Relay On-Vehicle Inspection


  1. INSPECT CIRCUIT OPENING RELAY (C/OPN)

  2. INSPECT NO. 1 INTEGRATION RELAY (IG2)

  3. INSPECT NO. 1 INTEGRATION RELAY (EFI)

  4. INSPECT NO. 1 INTEGRATION RELAY (A/F)

  5. INSPECT AIR PUMP HEATER RELAY

  6. INSPECT AIR INJECTION VSV RELAY (AI-VSV)

  7. INSPECT MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

Relay -- On-Vehicle Inspection



1. INSPECT CIRCUIT OPENING RELAY (C/OPN)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System.Relay  On-Vehicle Inspection
  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    3 - 5
    Battery voltage is not applied to terminals 1 and 2
    10 kΩ or higher
    Battery voltage is applied to terminals 1 and 2
    Below 1 Ω
    If the result is not as specified, replace the circuit opening relay.


2. INSPECT NO. 1 INTEGRATION RELAY (IG2)
  1. Check the IG2 fuse.

    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Tester Connection
      Condition
      Specified Condition
      IG2 fuse
      Always
      Below 1 Ω
      If the result is not as specified, replace the IG2 fuse.


  1. Check the IG2 relay.



      Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System.Relay  On-Vehicle Inspection
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Tester Connection
      Condition
      Specified Condition
      1C-1 - 1A-4
      Battery voltage not applied to terminals 1A-1 and 1A-3
      10 kΩ or higher
      Battery voltage applied to terminals 1A-1 and 1A-3
      Below 1 Ω
      Text in Illustration
      *a
      Component without harness connected
      (Integration Relay)
      If the result is not as specified, replace the No. 1 integration relay.


3. INSPECT NO. 1 INTEGRATION RELAY (EFI)
  1. Check the EFI fuse.

    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Tester Connection
      Condition
      Specified Condition
      EFI fuse
      Always
      Below 1 Ω
      If the result is not as specified, replace the EFI fuse.


  1. Check the EFI relay.



      Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System.Relay  On-Vehicle Inspection
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Tester Connection
      Condition
      Specified Condition
      1C-1 - 1B-4
      Battery voltage not applied to terminals 1B-2 and 1B-3
      10 kΩ or higher
      Battery voltage applied to terminals 1B-2 and 1B-3
      Below 1 Ω
      Text in Illustration
      *a
      Component without harness connected
      (Integration Relay)
      If the result is not as specified, replace the No. 1 integration relay.


4. INSPECT NO. 1 INTEGRATION RELAY (A/F)
  1. Check the A/F fuse.

    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Tester Connection
      Condition
      Specified Condition
      A/F fuse
      Always
      Below 1 Ω
      If the result is not as specified, replace the A/F fuse.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System.Relay  On-Vehicle Inspection
  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    1C-1 - 1B-8
    Battery voltage not applied to terminals 1B-4 and 1B-7
    10 kΩ or higher
    Battery voltage applied to terminals 1B-4 and 1B-7
    Below 1 Ω
    Text in Illustration
    *a
    Component without harness connected
    (Integration Relay)
    If the result is not as specified, replace the No. 1 integration relay.


5. INSPECT AIR PUMP HEATER RELAY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System.Relay  On-Vehicle Inspection
  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    3 - 5
    Battery voltage is not applied to terminals 1 and 2
    10 kΩ or higher
    Battery voltage is applied to terminals 1 and 2
    Below 1 Ω
    If the result is not as specified, replace the air pump heater relay.


6. INSPECT AIR INJECTION VSV RELAY (AI-VSV)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System.Relay  On-Vehicle Inspection
  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    3 - 5
    Battery voltage is not applied to terminals 1 and 2
    10 kΩ or higher
    Battery voltage is applied to terminals 1 and 2
    Below 1 Ω
    If the result is not as specified, replace the air injection VSV relay.


7. INSPECT MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)
NOTICE:
The ACC relay and IG1 No. 1 relay are built into the main body ECU (driver side junction block).


  1. Inspect the ACC relay.



    1. Measure the resistance according to the value(s) in the table below.


      Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System.Relay  On-Vehicle Inspection


      Text in Illustration
      *a
      Component without harness connected
      (Main Body ECU)
      -
      -
      Standard Resistance:
      Tester Connection
      Condition
      Specified Condition
      2D-17 - 2K-1
      Battery voltage not applied to terminals 2A-48 and 2D-4
      10 kΩ or higher
      Battery voltage applied to terminals 2A-48 and 2D-4
      Below 1 Ω
      If the result is not as specified, replace the main body ECU.


  1. Inspect the IG1 No. 1 relay.



    1. Measure the resistance according to the value(s) in the table below.


      Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System.Relay  On-Vehicle Inspection


      Text in Illustration
      *a
      Component without harness connected
      (Main Body ECU)
      -
      -
      Standard Resistance:
      Tester Connection
      Condition
      Specified Condition
      2A-31 - 2K-1
      Battery voltage not applied to terminals 2A-52 and 2D-4
      10 kΩ or higher
      Battery voltage applied to terminals 2A-52 and 2D-4
      Below 1 Ω
      If the result is not as specified, replace the main body ECU.