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Home >> Toyota >> 2007 >> Avalon XLS >> Repair and Diagnosis >> Electrical >> Starter >> Starting System >> Smart Key System >> DTC B2273 Ignition 2 Monitor Malfunction >> Inspection Procedure

Inspection Procedure

  1. READ VALUE OF INTELLIGENT TESTER 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the engine switch on (IG) and press the intelligent tester main switch on.
    3. Read the Data List according to the displays on the tester.

    PWR SOURCE CTRL (Power source control ECU): 

    DATA LIST

    Item Measurement Item / Display (Range) Normal Condition Diagnostic Note
    IG2 RELAY MON1 Status of IG2 relay monitor (outer) / ON or OFF ON: Engine switch ON (IG2 relay is ON)
    OFF: Engine switch OFF (IG2 relay is OFF)    		 -

    OK: 

    "ON" (Engine switch on (IG)) appears on the screen. 

    Result 

    RESULT

    Condition Proceed to
    NG C
    OK (When troubleshooting according to the PROBLEM SYMPTOM TABLE) B
    OK (When troubleshooting according to the DTC chart) A

    B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

    C:  Go to step 2 below.

    A: REPLACE POWER SOURCE CONTROL ECU 

  2. INSPECT RELAY (Marking: IG2) 
    1. Remove the IG2 relay from the engine room R/B.
    2. Measure the resistance according to the value(s) in the table below.
      Fig 1: Identifying Relay Connector Terminals (Marking IG2)
      G05000340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      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 RELAY 

    OK: Go to Next Step 

  3. CHECK WIRE HARNESS (ENGINE ROOM R/B - POWER SOURCE CONTROL ECU AND BODY GROUND) 
    1. Remove the IG2 relay from the engine room J/B and R/ B.
      Fig 2: Identifying IG2 Relay Connector Terminals
      G05000341Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the D44 ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      Fig 3: Identifying D44 ECU Connector Terminal IG2D
      G05000342Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      RESISTANCE SPECIFICATION

      Terminal No. (Symbol) Specified Condition
      Engine Room R/B IG2 relay terminal 1 - D44-35 (IG2D) Below 1 Ω
      Engine Room R/B IG2 relay terminal 2 - Body ground Below 1 Ω
      D44-35 (IG2D) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE POWER SOURCE CONTROL ECU 

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