Toyota Venza Quiz
Power Assist Systems

Vehicle Speed Signal Malfunction (C1541)

In this manual: Power Assist Systems
Introduction — 15Maintenance — 8Audio / Video — 102Garage Door Opener — 8Navigation / Multi Info Display — 81Park Assist / Monitoring — 50Brake (front) — 7Brake (rear) — 7Brake Control / Dynamic Control Systems — 79Brake System (other) — 28Parking Brake — 22Axle And Differential — 44Drive Shaft / Propeller Shaft — 24Mf1a Transfer / 4wd / Awd — 46U660e Automatic Transmission / Transaxle — 1241ar-fe Cooling — 311ar-fe Emission Control — 101ar-fe Engine Control — 1331ar-fe Engine Mechanical — 441ar-fe Fuel — 311ar-fe Intake / Exhaust — 211ar-fe Lubrication — 111ar-fe Starting — 16Cruise Control — 241ar-fe Battery / Charging — 162gr-fe Battery / Charging — 17Networking — 67Power Distribution — 8Power Assist Systems — 34Steering Column — 37Steering Gear / Linkage — 29Alignment / Handling Diagnosis — 4Front Suspension — 39Rear Suspension — 35Tire / Wheel — 4Tire Pressure Monitoring — 35Door / Hatch — 83Exterior Panels / Trim — 56Horn — 4Lighting (ext) — 89Mirror (ext) — 36Sliding Roof / Convertible — 26Window / Glass — 87Wiper / Washer — 30Door Lock — 85Heating / Air Conditioning — 82Interior Panels / Trim — 20Lighting (int) — 37Meter / Gauge / Display — 41Mirror (int) — 9Power Outlets (int) — 10Seat — 84Seat Belt — 43Supplemental Restraint Systems — 131Theft Deterrent / Keyless Entry — 155
~1min read
DESCRIPTION

The power steering ECU receives vehicle speed signals from the brake actuator assembly (skid control ECU) via CAN communication. The ECU provides appropriate assisting force in accordance with the vehicle speed, based on the signals.

DTC No.

DTC Detection Condition

Trouble Area

C1541

This DTC is detected when vehicle speed signals via CAN communication are cut off for 3 seconds or more.
  • Speed sensor circuit
  • Brake actuator assembly (Skid control ECU)
  • CAN communication system
  • Power steering ECU
CAUTION / NOTICE / HINT

NOTICE:

If the power steering ECU has been replaced with a new one, perform the rotation angle sensor initialization and torque sensor zero point calibration (See page ).


PROCEDURE

  1. CHECK OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM)

(a) Check if DTC U0129 is output (See page
).

Result

Proceed to

No output

A

U0129 is output

B

HINT:

DTC U0129 indicates an brake actuator assembly (skid control ECU) communication malfunction in the power steering system.


B

GO TO CAN COMMUNICATION SYSTEM
A

  1. CHECK OTHER DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM)

(a) Using the Techstream, check for DTCs and confirm that there are no problems in the vehicle stability control system (See page ).


Result

Proceed to

DTC is not output.

A

DTC is output.

B

A

REPLACE POWER STEERING ECU

B

REPAIR CIRCUIT INDICATED BY OUTPUT CODE

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