Toyota Tundra Service Manual: Cruise Control Input Circuit (P0575)

Toyota Tundra Service Manual / Engine, Hybrid System / Cruise Control / Dynamic Radar Cruise Control System / Cruise Control Input Circuit (P0575)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

P0575

Cruise Control Input Circuit

Either of the following conditions is met:

  • When the ignition switch is ON, 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.
  • 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 after cruise cancel signal (STP signal) is received by the ECM.

ECM
DTC Detection Conditions:
 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

Ignition switch to ON

○

-

Dynamic radar cruise control system is operating

-

○

Malfunction Status

STP signals received by the ECM supervisory CPU and that received by the control ECU do not match

○

-

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

-

○

Detection Time

0.2 seconds or more

0.4 seconds or more

Number of Trips

1 trip

1 trip

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the ECM, refer to Registration.

Click here

HINT:

The ECM receives signals from each sensor to control all functions of the cruise control system. When a malfunction is detected, the fail-safe function operates until the ignition switch off.

PROCEDURE

1.

CHECK FOR DTCs (RADAR CRUISE1)

(a) Clear the DTCs.

Click here

(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 dynamic radar cruise control operation is possible.
  2. Turn the cruise control system on using the cruise control main switch (ON-OFF button).
  3. Depress the brake pedal for 0.4 seconds or more.

(c) Check for DTCs.

Click here

Result

Proceed to

DTC P0575 are not output.

A

DTC P0575 are output.

B
A

USE SIMULATION METHOD TO CHECK

B

REPLACE ECM

    Brake Switch "A" Circuit (P0571)

    Brake System (P1578)

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