Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: EPS Warning Light Circuit

DESCRIPTION

Use the following procedure if no DTCs are output but the EPS warning light is illuminated continuously.

The power steering ECU assembly controls the warning light in the combination meter assembly via CAN communication.

CAUTION / NOTICE / HINT

NOTICE:

When the power steering ECU assembly has been replaced, perform Power Steering ECU Initial Setting (assist map writing).

Click here

PROCEDURE

1.

CHECK VEHICLE CONTROL HISTORY (POWER STEERING SYSTEM)

(a) Enter the following menus: Chassis / EMPS / Utility / Vehicle Control History (RoB).

Chassis > EMPS > Utility

Tester Display

Vehicle Control History (RoB)

HINT:

The EPS warning light illuminates if any vehicle control history is stored.

Result

Proceed to

Vehicle control history not stored for power steering ECU assembly

A

Vehicle control history stored for power steering ECU assembly

B

B

PERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY

Click here

NOTICE:

After performing troubleshooting and repair regarding vehicle control history, clear the vehicle control history.

A

2.

INSPECT COMBINATION METER ASSEMBLY

(a) Perform the Active Test of the combination meter assembly using the GTS.

Body Electrical > Combination Meter > Active Test

Tester Display

EPS Warning

(b) Check the combination meter assembly.

OK:

The EPS warning light turns on or off in accordance with the GTS operation.

OK

REPLACE POWER STEERING ECU ASSEMBLY

NG

GO TO METER / GAUGE SYSTEM

    READ NEXT:

     Abnormal Feel at Steering End Position

    SYSTEM DESCRIPTION This vehicle employs end position contact shock reduction control for column EPS, designed to protect components by suppressing torque input when steering mechanism components

     Steering Column

     Heated Steering Wheel System

    SEE MORE:

     Emergency Call Switch Circuit Short to Ground (B15C511,B15C513)

    DESCRIPTION This DTC is stored when the DCM (telematics transceiver) detects an open or short circuit in the manual (SOS) switch. DTC No. Detection Item DTC Detection Condition Trouble Area B15C511 Emergency Call Switch Circ

     New Key Registration Warning Message is not Displayed

    DESCRIPTION If the new key registration warning message is not displayed after an electrical key transmitter sub-assembly has been registered, there may be communication problem between the certification ECU (smart key ECU assembly) and combination meter assembly (meter ECU). CAUTION / NOTICE / HINT

    © 2020-2025 Copyright www.tcorollacross.com