C1524

POWER STEERING: POWER STEERING SYSTEM: C1524/24: Motor Circuit Malfunction

DTC C1524/24 - Motor Circuit Malfunction

DESCRIPTION

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

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (MOTOR ACTUAL CURRENT AND COMMAND VALUE CURRENT)
(a) Connect a Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / EMPS / Data List.
(e) Select the item "Motor Actual Current" and "Command Value Current" in the Data List and read the value displayed on the Techstream.
Standard current:

HINT: The current changes when steering wheel is turned.

NG -- INSPECT POWER STEERING ECU
OK -- CHECK FOR INTERMITTENT PROBLEMS
2. INSPECT POWER STEERING ECU
(a) Turn the ignition switch to ON.

(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:

Result:

B -- INSPECT STEERING COLUMN ASSEMBLY (POWER STEERING MOTOR)
A -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND)
(a) Disconnect the connector from the power steering ECU.

(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. INSPECT STEERING COLUMN ASSEMBLY (POWER STEERING MOTOR)
(a) Disconnect the connector from the power steering ECU.

(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPLACE STEERING COLUMN ASSEMBLY
OK -- REPLACE POWER STEERING ECU