Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Vehicle Speed Signal (C1541)

DESCRIPTION

The power steering ECU (rack and pinion power steering gear assembly) receives vehicle speed signals from the skid control ECU (brake booster with master cylinder assembly) via CAN communication. The ECU provides appropriate assist force in accordance with the vehicle speed based on the signals.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Return-to-normal Condition

Note

C1541

Vehicle Speed Signal

A vehicle speed signal malfunction is detected

  • Brake control system
  • CAN communication system

EPS warning light: Comes on

The ECU judges the system has returned to normal

-

CAUTION / NOTICE / HINT

NOTICE:

If the rack and pinion power steering gear assembly has been replaced, perform assist map writing and torque sensor zero point calibration.

Click here

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if DTC U0129 is output.

Chassis > EMPS > Trouble Codes

Result

Proceed to

DTC U0129 is not output.

A

DTC U0129 is output.

B

A

GO TO BRAKE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART)

B

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

    Torque Sensor Zero Point Adjustment Incomplete (C1516)

    IG Power Supply Voltage (C1551)

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Electronically Controlled Brake System(for Gasoline Model): VSC OFF Switch Circuit
    DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication. Pressing the VSC OFF switch turns off TRAC operation, and pressing and holding this switch turns off TRAC and VSC operation. If TRAC and VSC operations are turned off, "Tr ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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