B2602

DTC B2602 KEY UNLOCK WARNING SWITCH CIRCUIT MALFUNCTION

CIRCUIT DESCRIPTION

Detection Item:

A signal (ON or OFF) is sent from the transponder key ECU*1 (steering lock ECU*2) to the multiplex tilt & telescopic ECU via the communication bus

when the ignition key is inserted into the key cylinder. The multiplex tilt & telescopic ECU uses this signal to operate the auto away or auto return function.

Wiring Diagram (w/o Smart Key):

Wiring Diagram (w/ Smart Key):

INSPECTION PROCEDURE

HINT:
w/o Smart key: Transponder key ECU
w/ Smart key: Steering lock ECU

Step 1-2:

Step 3:

Step 4: