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Last Modified: 11-27-2007 1.6 C
Service Category: Engine/Hybrid System Section: Cruise Control
Model Year: 2008 Model: LX570 Doc ID: RM000003FEP000X
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: DESCRIPTION (2008 LX570)

DTC

P1578

Brake System Malfunction

DESCRIPTION

This DTC may also be stored when there is a vehicle stability control system malfunction.

DTC Code

DTC Detection Condition

Trouble Area

P1578

During cruise control operation (vehicle-to-vehicle distance control mode), the brake system malfunctions.
  • Vehicle stability control system
  • ECM

INSPECTION PROCEDURE

NOTICE:

This DTC code may be output under the vehicle stability control system at the same time. In that case, perform troubleshooting for the vehicle stability control system first.

PROCEDURE

1.

CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM)

(a) Using the Techstream, enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Code.

(b) Check for DTCs BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

OK:

DTC is not output.

OK

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.

(3) Push the -SET switch to activate the dynamic radar cruise control.

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

OK:

DTC P1578 is not output.

OK