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 |
Vehicle Specifications have not been Stored (B2451)
DESCRIPTION
The headlight leveling ECU assembly stores this DTC if the vehicle specifications
have not been stored in the ECU.
HINT:
The vehicle specifications are stored in the ECU at the factory.
DTC No.
DTC Detecting Condition
...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK BATTERY CONDITION
NOTICE:
If the battery is weak or if the engine is difficult to start, perform the following
procedure.
(a) Check the battery for damage and deformation. If severe damage, deformation
or leaka ...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful bec ...