DESCRIPTION
The motor rotation angle sensor detects the motor rotation angle and sends this information to the power steering ECU.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1528 |
Motor rotation angle sensor malfunction |
|
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. |
CHECK CONNECTOR CONNECTION CONDITION |
(a) Check the installation condition of the motor rotation angle sensor connector.
OK:
Motor rotation angle sensor connector is securely connected to the power steering ECU.
NG | ![]() |
CONNECT CONNECTOR |
|
2. |
READ VALUE USING TECHSTREAM (MOTOR ROTATION ANGLE SENSOR) |
(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 item "Motor Rotation Angle" in the Data List and read the value displayed on the Techstream.
EMPS
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Motor Rotation Angle |
Motor rotation angle/ Min.: 0 deg Max.: 360 deg |
During steering operation, motor rotation angle value changes from 0 to 360° |
The engine is running and steering wheel is being turned. |
OK:
During steering operation, motor rotation angle value changes from 0 to 360°.
OK | ![]() |
REPLACE POWER STEERING ECU |
|
3. |
CHECK STEERING COLUMN ASSEMBLY |
(a) Disconnect the connector from the motor rotation angle sensor. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
z9-6 (RZSN) - z9-3 (RZG) |
Always |
75.2 to 112.8 Ω |
z9-1 (RZV) - z9-3 (RZG) |
Always |
27.6 to 41.4 Ω |
z9-5 (RZCS) - z9-3 (RZG) |
Always |
73.2 to 110.8 Ω |
*1 |
Front view of wire harness connector (to Motor Rotation Angle Sensor) |
OK | ![]() |
REPLACE POWER STEERING ECU |
NG | ![]() |
REPLACE STEERING COLUMN ASSEMBLY |
Terminals Of Ecm
TERMINALS OF ECM
HINT:
The standard voltage between each pair of ECM terminals is shown in the table
below. The appropriate conditions for checking each pair of terminals are also indicated.
The result of checks should be compared with the standard vol ...
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
...
Inspection
INSPECTION
PROCEDURE
1. INSPECT FRONT STABILIZER LINK ASSEMBLY
(a) Inspect the turning torque of the ball joint.
(1) Secure the front stabilizer link assembly in a vise using aluminum
plates.
(2) Install the nut to the front stabilizer ...