Toyota 4Runner manuals

Toyota 4Runner: Vehicle Speed Signal (C1541)

DESCRIPTION

The power steering ECU assembly receives vehicle speed signals from the master cylinder solenoid (skid control ECU) via CAN communication. The power steering ECU assembly provides appropriate assisting force in accordance with the vehicle speed signal.

DTC Code

DTC Detection Condition

Trouble Area

C1541

An abnormal vehicle speed signal is received.

  • Speed sensor circuit
  • Vehicle stability control system
  • CAN communication system
  • Power steering ECU assembly

PROCEDURE

1.

CHECK OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM)

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


Result

Result

Proceed to

DTC U0129 is not output.

A

DTC U0129 is output.

B

HINT:

DTC U0129 indicates a CAN communication malfunction in the power steering system.


B

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


A

2.

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

Result

Proceed to

DTC is not output.

A

DTC is output.

B


A

REPLACE POWER STEERING ECU ASSEMBLY


B

GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART)

Lost Communication with ECM / PCM "A" (U0100,U0126,U0129)
DESCRIPTION The power steering ECU assembly receives signals from the ECM, steering angle sensor and master cylinder solenoid (skid control ECU) via the CAN communication system. DTC ...

High Engine Revolution Signal (C1544)
DESCRIPTION The power steering ECU assembly receives engine speed signals from the ECM via CAN communication. The power steering ECU assembly provides appropriate assisting force in accordance wi ...

Other materials about Toyota 4Runner:

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY, MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Remove the main body ECU (multiplex network body ECU) (See page ). (b) Measure the voltage and resistance according to the value(s) in the ta ...

Brake Warning Light does not Come ON
DESCRIPTION Refer to Brake Warning Light Remains ON (See page ). WIRING DIAGRAM Refer to Brake Warning Light Remains ON (See page ). CAUTION / NOTICE / HINT NOTICE: When replacing the master cylinder solenoid, perform calibration (See page ). PROC ...

© 2016-2021 | www.to4runner.net

0.007