C1523

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for 2AZ-FE): C1522-C1524: Motor Circuit Malfunction

DTC C1522 - Motor Circuit Malfunction

DTC C1523 - Motor Circuit Malfunction

DTC C1524 - Motor Circuit Malfunction

DESCRIPTION

The power steering ECU supplies the current to the power steering motor through the motor circuit.






WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE: If the steering column assembly or power steering ECU has been replaced, perform the rotation angle sensor initialization and torque sensor zero point calibration Programming and Relearning.

PROCEDURE

1. READ VALUE USING TECHSTREAM (MOTOR VOLTAGE)
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / EMPS / Data List.
(f) Select the items "Motor Terminal Volt(U)", "Motor Terminal Volt(V)" and "Motor Terminal Volt(W)" in the Data List and read the value displayed on the Techstream.

EMPS





Result:






B -- REPLACE STEERING COLUMN ASSEMBLY
A -- REPLACE POWER STEERING ECU