Electronic Power Steering System Ps Warning Light Does Not Come On

Steering. Lexus Is250, Is220D. Gse20 Ale20
Power Steering. Lexus Is250, Is220D. Gse20 Ale20

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT CAN COMMUNICATION SYSTEM

INSPECT MULTIPLEX COMMUNICATION SYSTEM

INSPECT COMBINATION METER ASSEMBLY

ELECTRONIC POWER STEERING SYSTEM - PS Warning Light does not Come ON


WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Power Steering.Power Steering System.Electronic Power Steering System Ps Warning Light Does Not Come On


INSPECTION PROCEDURE

1.INSPECT CAN COMMUNICATION SYSTEM

  1. Using the intelligent tester, check for DTCs and confirm that there are no problems in the CAN communication system.

    OK:
    DTCs are not output.


NG
GO TO CAN COMMUNICATION SYSTEM
OK


2.INSPECT MULTIPLEX COMMUNICATION SYSTEM

  1. Using the intelligent tester, check for DTCs and confirm that there are no problems in the multiplex communication system (BEAN).

    OK:
    DTCs are not output.


NG
GO TO MULTIPLEX COMMUNICATION SYSTEM
OK


3.INSPECT COMBINATION METER ASSEMBLY

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Perform the Active Test according to the display on the tester.

    Combination Meter:
    Item
    		Test Details
    		Diagnostic Note
    Indicat EPS
    		PS indicator light OFF/ON
    		-
    OK:
    PS indicator light comes on.
    NOTICE:
    If replacing the power steering ECU assembly, initialize the rotation angle sensor value and calibrate the torque sensor zero point (Click here).


NG
REPLACE COMBINATION METER ASSEMBLY
OK

REPLACE POWER STEERING ECU ASSEMBLY