Toyota Avalon Service & Repair Manual: Cruise Control System Internal Failure (P057504,P057549)

Toyota Avalon Service & Repair Manual / Engine / Cruise Control / Dynamic Radar Cruise Control System(for Gasoline Model) / Cruise Control System Internal Failure (P057504,P057549)

DESCRIPTION

This DTC is stored when there is a malfunction in the ECM.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

P057504

Cruise Control System Internal Failure

While the dynamic radar cruise control system is operating, the dynamic radar cruise control system control of vehicle speed is not canceled and approximately 0.4 seconds have elapsed since cruise cancel signal (STP signal) is received by the ECM.

ECM

Does not come on

P057549

Cruise Control Internal Electronic Failure

When the engine switch is on (IG), STP signals received by the ECM supervisory CPU and that received by the control ECU do not match for approximately 0.2 seconds or more.

ECM

Does not come on

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the ECM, refer to Registration.

Click here

PROCEDURE

1.

CHECK FOR DTCs

(a) Clear the DTCs.

Powertrain > Radar Cruise1 > Clear DTCs

(b) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(c) Check for DTCs.

Powertrain > Radar Cruise1 > Trouble Codes

Result

Proceed to

DTC P057504 and P057549 are not output.

A

DTC P057504 or P057549 is output.

B
A

USE SIMULATION METHOD TO CHECK

B

REPLACE ECM

    Brake Switch "A" Signal Compare Failure (P057162)

    Brake System (P157800)

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