DESCRIPTION
The power steering ECU supplies current to the power steering motor through the motor circuit.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1522 |
Motor current sensor malfunction |
|
C1523 |
Excessively large current deviation |
|
C1524 |
Short (or open) in motor circuit or abnormal voltage or current in motor circuit |
|
C1555 |
Motor relay failure |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the power steering ECU and steering column assembly have been replaced, perform
the rotation angle sensor initialization and torque sensor zero point calibration
(See page ).
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 to ON.
(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
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Motor Terminal Volt(U) |
Motor terminal voltage (U phase)/ Min.: 0 V Max.: 46.667 V |
During steering operation, value changes within 4 to 46 V range |
The engine is running and steering wheel is being turned. |
Motor Terminal Volt(V) |
Motor terminal voltage (V phase)/ Min.: 0 V Max.: 46.667 V |
During steering operation, value changes within 4 to 46 V range |
The engine is running and steering wheel is being turned. |
Motor Terminal Volt(W) |
Motor terminal voltage (W phase)/ Min.: 0 V Max.: 46.667 V |
During steering operation, value changes within 4 to 46 V range |
The engine is running and steering wheel is being turned. |
Result |
Proceed to |
---|---|
During steering operation, value changes within 4 to 46 V range |
A |
During steering operation, voltage is not generated |
B |
A | ![]() |
REPLACE POWER STEERING ECU |
B | ![]() |
REPLACE STEERING COLUMN ASSEMBLY |
Front Passenger Side Door Entry Lock and Unlock Functions do not Operate
DESCRIPTION
When the entry lock and unlock functions do not operate only for the front passenger
door, an error in output request codes from the front passenger door or malfunction
in the front door outside handle assembly is suspected. If the entry funct ...
Atf Temperature Sensor(when Using The Engine Support Bridge)
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT ATF TEMPERATURE SENSOR ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester C ...
Steering Pad Switch Circuit
DESCRIPTION
This circuit sends an operation signal from the steering pad switch assembly
to the radio and display receiver assembly.
If there is an open in the circuit, the audio system cannot be operated using
the steering pad switch assembly.
If there ...