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Home >> Toyota >> 2006 >> Prius >> Repair and Diagnosis >> Electrical >> Starter >> Starting System (1NZ-FXE) >> Smart Key System >> DTC B2272 Ignition 1 Monitor Malfunction >> Inspection Procedure

Inspection Procedure

  1. READ VALUE OF DATA LIST (IG1 RELAY) 
    1. Connect the intelligent tester (with CAN VIM) to the DLC3.
    2. Turn the power switch ON (IG) and press the intelligent tester main switch ON.
    3. Select the items below in the DATA LIST and read the displays on the intelligent tester.

      Power source control ECU 

      ITEM NORMAL CONDITION CHART

      Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
      IG1 RELAY MON 1 IG1 outer relay monitor /
      ON or OFF      		 ON: Power switch ON (IG)
      OFF: Power switch OFF      		 -

      OK : ON (power switch ON (IG)) appears on the screen. 

    OK : REPLACE POWER SOURCE CONTROL ECU 

    NG : GO TO NEXT STEP 

  2. INSPECT IG1 RELAY 
    1. Remove the IG1 relay from the driver side junction block.
    2. Measure the resistance of the relay.

      Standard resistance 

      RESISTANCE TESTER CONNECTION SPECIFICATION

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      3 - 5 Below 1 Ω
      (when battery voltage is applied to terminals 1 and 2)

    NG : REPLACE IG1 RELAY 

    Fig 1: Identifying IG1 Relay
    G04473191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : GO TO NEXT STEP 

  3. CHECK WIRE HARNESS (DRIVER SIDE JUNCTION BLOCK - ECU AND BODY GROUND) 
    1. Disconnect the 1J and 1E driver side junction block connectors.
    2. Disconnect the P6 ECU connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE TESTER CONNECTION SPECIFICATION

      Tester Connection Specified Condition
      1J-3 - P6-34 (IG1D) Below 1 Ω
      1J-3 or P6-34 (IG1D) - Body ground 10 kΩ or higher
      1E-17 - Body ground Below 1 Ω

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 2: Identifying P6 ECU Connector
    G04473192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : GO TO NEXT STEP 

  4. CHECK DRIVER SIDE JUNCTION BLOCK 
    1. Remove the IG1 relay from the driver side junction block.
    2. Disconnect the 1J and 1E driver side junction block connectors.
    3. Measure the resistance of the driver side junction block.

      Standard resistance 

      RESISTANCE TESTER CONNECTION SPECIFICATION

      Tester Connection Specified Condition
      1J-3 - Driver side junction block IG1 relay terminal 2 Below 1 Ω
      1E-17 - Driver side junction block IG1 relay terminal 1 Below 1 Ω
      Fig 3: Identifying Driver Side Junction Block & Relay
      G04473193Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY 

    OK : REPLACE POWER SOURCE CONTROL ECU 

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