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Home >> Lexus >> 2013 >> LS 460 Base, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Steering Column >> Power Tilt & Telescopic Steering Column (Diagnostic Codes & Circuit Tests) >> Power Tilt And Power Telescopic Steering Column System >> DTC B2602: Key Unlock Warning Switch Circuit Malfunction; DTC B2606: Key Code Confirm Signal Malfunction >> Description

DTC B2602: Key Unlock Warning Switch Circuit Malfunction; DTC B2606: Key Code Confirm Signal Malfunction: Description

A key code confirmation signal (ON or OFF) is sent from the main body ECU to the multiplex tilt and telescopic ECU via the communication bus.

The multiplex tilt and telescopic ECU uses this signal to operate the auto away/return function.

DTC Code Detection Item Trouble Area
B2602 Both of the following conditions continue:
  • A key code confirmation signal is off.
  • The engine switch is on (IG).
  • CAN communication system
  • Smart access system with push-button start
  • Multiplex tilt and telescopic ECU
B2606 IG signals and/or key code confirmation signals are not received correctly.
  • CAN communication system
  • Smart access system with push-button start
  • Multiplex tilt and telescopic ECU
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