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Home >> Toyota >> 2007 >> RAV4 Base, 2.4 D, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 490 (Smart Key System (For Entry Function) (Diagnostic Codes & Symptom Tests)) >> SMART KEY SYSTEM (for Entry Function) >> DTC B27A5: Open in Front Floor Electrical Key Oscillator Circuit >> Inspection Procedure
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Inspection Procedure

WARNING: This page is about a different car, the 2010 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • The smart key system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly.
  • When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.
  • Before replacing the certification ECU, refer to the engine immobiliser system (w/ Smart Key System). Refer to REGISTRATION .
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