Integration Relay Inspection

Engine. Lexus Is250, Is220D. Gse20 Ale20
4Gr-Fse Engine Control System. Lexus Is250, Is220D. Gse20 Ale20

  1. INSPECT INTEGRATION RELAY

Integration Relay -- Inspection



1. INSPECT INTEGRATION RELAY
NOTICE:
  1. Some relays are built into the integration relay (unit: A). The integration relay cannot be disassembled. If there is a malfunction in the circuit of the integration relay, replace the integration relay.

  2. The internal circuit of the integration relay is as shown in the illustration. Inspect the integration relay using the following procedures.


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Integration Relay Inspection



    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Integration Relay Inspection

  1. Measure the resistance of the C/OPN relay.

    1. Using an ohmmeter, measure the resistance between terminal.

      Standard resistance:
      Tester Connection
      		Specified Condition
      2B-5 - 2B-8
      		10 kΩ or higher

    2. Connect the battery's positive (+) lead to terminals 2B-5 and negative (-) lead to terminal 2B-7. Using an voltmeter, measure the resistance between terminal.

      Standard voltage:
      Tester Connection
      		Specified Condition
      2B-7 - 2B-8
      		10 - 14V


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Integration Relay Inspection

  1. Measure the resistance of the EFI MAIN relay.

    1. Remove the EFI fuse. Using an ohmmeter, measure the resistance between the terminals.

      Standard resistance:
      Tester Connection
      		Specified Condition
      EFI fuse terminal 2 - 2A-8
      		10 kΩ or higher

    2. Connect the battery's positive (+) lead to terminal 2A-6 and negative (-) lead to terminal 2A-7. Using an ohmmeter, measure the resistance between terminal.

      Standard resistance:
      Tester Connection
      		Specified Condition
      EFI fuse terminal 2 - terminal 2A-8
      		Below 1 Ω


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Integration Relay Inspection

  1. Measure the resistance of the EFI NO. 2 relay.

    1. Remove the F/PMP fuse. Using an ohmmeter, measure the resistance between the terminals.

      Standard resistance:
      Tester Connection
      		Specified Condition
      F-PMP fuse terminal 2 - 2B-4
      		10 kΩ or higher

    2. Connect the battery's positive (+) lead to terminal 2A-8 and negative (-) lead to terminal 2B-3. Using an ohmmeter, measure the resistance between the terminals.

      Standard resistance:
      Tester Connection
      		Specified Condition
      F-PMP fuse terminal 2 - 2B-4
      		Below 1 Ω


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Integration Relay Inspection

  1. Measure the resistance of the EFI INJ relay.

    1. Remove the INJ fuse. Using an ohmmeter, measure the resistance between the terminals.

      Standard resistance:
      Tester Connection
      		Specified Condition
      INJ fuse terminal 2 - 2A-4
      		10 kΩ or higher

    2. Connect the battery's positive (+) lead to terminal 2A-2 and negative (-) lead to terminal 2A-3. Using an ohmmeter, measure the resistance between the terminals.

      Standard resistance:
      Tester Connection
      		Specified condition
      INJ fuse terminal 2 - terminal 2A-4
      		Below 1 Ω