Home Engine/Hybrid System Cruise Control DYNAMIC RADAR CRUISE CONTROL SYSTEM
Last Modified: 11-27-2007 1.6 C
Service Category: Engine/Hybrid System Section: Cruise Control
Model Year: 2008 Model: LX570 Doc ID: RM000003FER000X
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: DESCRIPTION (2008 LX570)

DTC

P1572

Improper Aiming of Radar Sensor Beam Axis

DESCRIPTION

This DTC is stored when there is a problem with the millimeter wave radar sensor beam axis adjustment.

DTC Code

DTC Detection Condition

Trouble Area

P1572

The vehicle speed is 40 km/h (25 mph) or more with the cruise control main switch on (vehicle-to-vehicle distance control mode) and the millimeter wave radar sensor beam axis is misaligned (0.15 sec. or more).

Millimeter wave radar sensor

HINT:

If the beam axis deviates vertically by +/-2° or more and/or horizontally by +/-4° or more at a distance of 4.0 to 6.0 m (13 to 20 ft), this DTC is stored.

INSPECTION PROCEDURE

NOTICE:

When the millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT (2008 LX570) .

PROCEDURE

1.

ADJUST MILLIMETER WAVE RADAR SENSOR

(a) Refer to the adjustment CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT (2008 LX570) .

HINT:

It is necessary to make the ECM recognize specification information (whether the vehicle is equipped with the dynamic radar or not). If this procedure has not been carried out, this DTC may be output.

NEXT

2.

CHECK DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM)

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

(b) Clear the DTCs 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