Home › Steering › Steering Column › POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM
Last Modified: 11-27-2007 1.6 C
Service Category: Steering Section: Steering Column
Model Year: 2008 Model: LX570 Doc ID: RM0000013KK00XX
Title: STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: DESCRIPTION (2008 LX570)

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 Condition

Trouble Area

B2602

Both of the following conditions continue:

  • The key code confirmation signal is off.
  • The engine switch is on (IG).
  • CAN communication system
  • Smart access system with push-button start (for start function)
  • 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 (for start function)
  • Multiplex tilt and telescopic ECU

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK OTHER DTC OUTPUT

HINT:

The power tilt and power telescopic steering column system uses the CAN communication system, so check its diagnostic system before proceeding to troubleshooting.

(a) Check if DTC B2621 is output.

Result

Result

Proceed to

B2621 is not output

A

B2621 is output

B

HINT:

  • If DTC B2621 is output, perform troubleshooting for B2621 first.
  • DTC B2621 indicates a communication interruption for the power tilt and power telescopic steering column system.

A

2.

READ VALUE USING TECHSTREAM (COMMUNICATION STATE OF ENGINE SWITCH AND KEY CODE)

(a) Use the Data List to check if the communication of the key code and the engine switch are functioning properly.

Tilt & Telescopic

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

IG Switch (CAN)

Communication state of engine switch/ON or OFF

ON: Communication normal

OFF: Communication interrupted

-

Key Code Confirm (CAN)

Communication state of key code confirmation signal/ON or OFF

ON: Communication normal

OFF: Communication interrupted

-

OK:

"ON" is displayed.

OK

3.

RECONFIRM DTC

(a) Clear the DTCs STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(b) Check for DTCs STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

OK:

DTC B2602 and/or B2606 is not output.

OK