Toyota Yaris: Dynamic Radar Cruise Control System / Communication Error from ECM to VSC Invalid Serial Data Received (P163181)

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Engine & Hybrid System / Cruise Control / Dynamic Radar Cruise Control System / Communication Error from ECM to VSC Invalid Serial Data Received (P163181)

DESCRIPTION

The skid control ECU (brake actuator assembly) sends signals such as brake request signals to the ECM. When the ECM detects logic error signals sent from the skid control ECU (brake actuator assembly) for a certain period of time, DTC P163181 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

P163181

Communication Error from ECM to VSC Invalid Serial Data Received

When the ignition switch is ON and the dynamic radar cruise control system is operating, the ECM detects logic error signals sent from the skid control ECU (brake actuator assembly) for approximately 1 second or more.

  • Vehicle stability control system
  • ECM

Radar Cruise1

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the ECM, refer to Service Bulletin.

PROCEDURE

1.

CHECK FOR DTCs

(a) Check for vehicle stability control system DTCs.

Chassis > Brake > Trouble Codes

Result

Proceed to

Vehicle stability control system DTCs are not output

A

Vehicle stability control system DTCs are output

B

B

GO TO VEHICLE STABILITY CONTROL SYSTEM

A

2.

CLEAR DTC

(a) Clear the DTCs.

Powertrain > Radar Cruise1 > Clear DTCs
NEXT

3.

CHECK FOR DTCs

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

HINT:

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

(b) Check for DTCs.

Powertrain > Radar Cruise1 > Trouble Codes

Result

Proceed to

DTC P163181 is not output

A

DTC P163181 is output

B

A

USE SIMULATION METHOD TO CHECK

B

REPLACE ECM

    Communication Error from VSC to ECM Invalid Serial Data Received (P163081)

    DESCRIPTION The skid control ECU (brake actuator assembly) sends signals such as brake request signals to the ECM. If an abnormal signal is detected, the ECM stores DTC P163081...

    Lost Communication with ECM/PCM "A" Missing Message (U010087,U010487,U012287)

    DESCRIPTION The ECM communicates with each sensor and ECU via CAN communication. If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored...

    Other information:

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Front Fog Light Circuit


    DESCRIPTION The main body ECU (multiplex network body ECU) controls the front fog lights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Before replacing the main body ECU (multiplex network body ECU), refer to Registration. Click here First, confirm that there is no malfunction in the power integration system...

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Random/Multiple Cylinder Misfire Detected (P030000,P030027,P030085-P030300)


    DESCRIPTION When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. Extremely high hydrocarbon concentration levels can cause an increase in exhaust emission levels. Extremely high concentrations of hydrocarbons can also cause increases in the three-way catalytic converter temperature, which may cause damage to the three-way catalytic converter...

    Categories

    Liftgate/Trunk Lid

    WARNING

    Never allow a person to ride in the luggage compartment/trunk

    Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision.

    Do not drive with the liftgate/trunk lid open

    read more

     
    Copyright © 2025 www.toyaris4.com