LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2012 >> RAV4 EV >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Engine Immobilizer System (W/ Smart Key System) (Diagnostic Codes & Circuit Tests) >> ENGINE IMMOBILIZER SYSTEM (w/ Smart Key System) >> Circuit Tests >> ID Code Box Power Source Circuit >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

ID Code Box Power Source Circuit: Procedure

  1. INSPECT FUSE (ECU-B) 
    1. Remove the ECU-B2 fuse from the engine room No. 2 relay block.
    2. Measure the resistance of the fuse.

      Standard Resistance

      Below 1 Ω

    NG → REPLACE FUSE 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (ID CODE BOX - BATTERY AND BODY GROUND) 
    Fig 1: Identifying E79 ID Box Connector Terminals
    GTY239002Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the E79 box connector.
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E79-8 (GND) - Body ground Always Below 1 Ω

      Standard Voltage

      Tester Connection Condition Specified Condition
      E79-1 (+B) - Body ground Always 11 to 14 V

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

scientia non olet · About LEMON Manuals