Home Vehicle Interior Supplemental Restraint Systems PRE-COLLISION: PRE-COLLISION SYSTEM
Last Modified: 11-27-2007 1.6 C
Service Category: Vehicle Interior Section: Supplemental Restraint Systems
Model Year: 2008 Model: LX570 Doc ID: RM000003FE5000X
Title: PRE-COLLISION: PRE-COLLISION SYSTEM: DESCRIPTION (2008 LX570)

DTC

B2056

Axial Gap of Radar Sensor

DESCRIPTION

This DTC is stored when the beam axis of the millimeter wave radar sensor is not aligned with the direction the vehicle is traveling. If the beam axis adjustment is not performed after installing a new millimeter wave radar sensor, the pre-collision system DTC B2056 is output, and when the vehicle speed is 40 km/h (25 mph) or more, the dynamic radar cruise control system DTC P1572 is output.

DTC Code

DTC Detection Condition

Trouble Area

B2056

The engine switch is on (IG) and the beam axis of the millimeter wave radar sensor is determined to be misaligned.

  • Millimeter wave radar sensor
  • Seat belt control ECU
  • Distance control ECU

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM)

(a) Using the Techstream, enter the following menus: Powertrain / Radar Cruise / Trouble Code.

(b) Clear the DTC CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(c) Perform the following to make sure the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(1) Drive the vehicle at a speed of 40 km/h (25 mph) or more.

(2) Turn the cruise control main switch on to set the vehicle-to-vehicle distance control mode to the standby state.

(d) Check for DTCs CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

OK:

DTC P1572 is not output.

OK

2.

CHECK DTC (PRE-COLLISION SYSTEM)

(a) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code.

(b) Clear the DTCs PRE-COLLISION: PRE-COLLISION SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(c) Check for DTCs PRE-COLLISION: PRE-COLLISION SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

OK:

DTC B2056 is not output.

OK