P1578

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

DESCRIPTION

This DTC is output when the VSC system has a problem. Check the VSC system when this DTC is output.





INSPECTION PROCEDURE

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

PROCEDURE

1. READ OUTPUT DTC (VEHICLE STABILITY CONTROL SYSTEM)

(a) Connect the Techstream the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / ABS / VSC / TRAC / Trouble Codes.

(e) Read the DTCs.

Result:





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

2. CHECK WHETHER DTC OUTPUT RECURS (DTC P1578)

(a) Clear the DTCs Dynamic Radar Cruise Control System.

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

HINT
If the detection conditions are not met, the malfunction cannot be detected.

(1) Drive the vehicle at a speed for which cruise control operation is possible.

(2) Turn the cruise control main switch on.

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

(c) Read the DTCs Dynamic Radar Cruise Control System.

OK:

DTC is not output.

NG -- REPLACE ECM Removal

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