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 power source control ECU assembly to the multiplex tilt & telescopic ECU via the communication bus.

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

DTC No.	Detection Item	Trouble Area
B2602	Both of the following conditions continue: A key code confirmation signal is off The engine switch is on (IG)	Multiplex communication system Smart access system with push-button start Multiplex tilt & telescopic ECU
B2606	IG signals and/or key code confirmation signals are not received correctly.	Multiplex communication system Smart access system with push-button start Multiplex tilt & telescopic ECU

DTC No.

Detection Item

Trouble Area

B2602

Both of the following conditions continue:

A key code confirmation signal is off

The engine switch is on (IG)

Multiplex communication system
Smart access system with push-button start
Multiplex tilt & telescopic ECU

B2606

IG signals and/or key code confirmation signals are not received correctly.

Multiplex communication system
Smart access system with push-button start
Multiplex tilt & telescopic ECU