Power Tilt And Power Telescopic Steering Column Fail-Safe Chart

Steering. Lexus Gs430, Gs300. Uzs190 Grs190
Steering Column. Lexus Gs430, Gs300. Uzs190 Grs190

Power Tilt And Power Telescopic Steering Column -- Fail-Safe Chart


HINT:
If the power voltage to the ECU returns to normal within 10 seconds during tilt or telescopic operation, the operation will be resumed. If it returns to normal after 10 seconds have elapsed, the operation restarts when a tilt or telescopic operation signal is again input to the ECU.

FAIL-SAFE OPERATION
DTC No.
Detection Item
Fail-safe
B2602
Key Unlock Warning Switch Circuit Malfunction
Auto away function stops.
Auto return function:
  1. Continues (when the engine switch is on (IG))
  2. Stops (when the engine switch is off)
B2606
Key Code Confirm Signal Malfunction
Auto away or auto return function stops.
B2610
Tilt Position Sensor or Tilt Motor Circuit Malfunction
Tilt operation is suspended.
B2611
Telescopic Position Sensor or Telescopic Motor Circuit Malfunction
Telescopic operation is suspended.
B2620
ECU Power Source Circuit Malfunction
Tilt and telescopic operations is suspended.
B2624
Speed Signal Malfunction
Auto away and/or auto return function stops.
HINT:
If the communication of an ECU related to this system is interrupted, the ECU effects the controls listed below. (Example: When the windshield wiper switch assembly (combination switch ECU) is defective, manual operation is not available but the auto away/return and position memory functions can operate.)

Tilt and Telescopic Operation
Cowl Side J/B RH
(Body ECU)
Position Control ECU & Switch Assembly
(Driver Seat ECU)
Windshield Wiper Switch Assembly
(Combination Switch ECU)
Multiplex Communication Interruption
Manual
○
(Engine switch on (IG))
○
X
X
Auto away/return
X
○
○
X
Position memory
(Memorization) (*1)
X
X
○
X
Position memory
(Reproduction) (*1)
○
(Engine switch on (IG))
X
○
X
○: Operate
X: Not operate
*1: w/ Driving position memory