P1578

CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P1578: Brake System Malfunction
P1578 - Brake System Malfunction

DESCRIPTION

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





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 Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC is not output.

NG -- GO TO VEHICLE STABILITY CONTROL SYSTEM Vehicle Stability Control System
OK -- Continue to next step.

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 Dynamic Radar Cruise Control System.

(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 Dynamic Radar Cruise Control System.

OK:

DTC P1578 is not output.

NG -- REPLACE ECM Removal

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting