P1578

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

DESCRIPTION

This DTC is stored when the vehicle stability control system has a problem. Check the vehicle stability control system when this DTC is output.





INSPECTION PROCEDURE

NOTICE:
When the ECM is replaced with a new one, initialization must be performed Programming and Relearning.

PROCEDURE

1. CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)

(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

Vehicle stability control system DTCs are not output.

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

2. CHECK FOR DTC

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

(b) 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 50 km/h (30 mph) or more.

(2) Turn the cruise control switch on.

(c) 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