DESCRIPTION
The power steering ECU stores this DTC when it determines that the assist map is not written in the ECU.
HINT:
The assist map is data written in the power steering ECU to control the degree of assistance. The assist map is selected based on the vehicle's specified communication data.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1581 |
Assist map not written in power steering ECU |
|
PROCEDURE
1. |
INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT |
(a) Initialize the rotation angle sensor value and calibrate the torque sensor
zero point (See page ).
HINT:
The assist map is automatically written during the rotation angle sensor initialization and torque sensor zero point calibration.
|
2. |
CHECK FOR DTC |
(a) Check for DTCs (See page ).
OK:
DTC C1581 is not output.
HINT:
DTC C1581 will be cleared after the assist map is written.
OK | ![]() |
END |
|
3. |
CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Using the Techstream, check for DTCs and confirm that there are no problems
in the CAN communication system (See page ).
OK:
DTC is not output.
NG | ![]() |
GO TO CAN COMMUNICATION SYSTEM |
|
4. |
CHECK ECM |
(a) Check if an ECM that complies with the vehicle specifications is installed.
OK:
ECM that complies with vehicle specifications is installed.
Result
Result |
Proceed to |
---|---|
OK |
A |
NG (for 2GR-FE) |
B |
NG (for 1AR-FE) |
C |
B | ![]() |
REPLACE ECM |
C | ![]() |
REPLACE ECM |
|
5. |
CHECK BRAKE ACTUATOR ASSEMBLY |
(a) Check if a brake actuator assembly (skid control ECU) that complies with the vehicle specifications is installed.
OK:
Brake actuator assembly (skid control ECU) that complies with vehicle specifications is installed.
OK | ![]() |
REPLACE POWER STEERING ECU |
NG | ![]() |
REPLACE BRAKE ACTUATOR ASSEMBLY |
Front Right Sensor Malfunction (C1AE4)
DESCRIPTION
The No. 1 ultrasonic sensor (front right sensor) is installed on the front bumper.
The ECU detects obstacles based on signals received from the No. 1 ultrasonic sensor
(front right sensor). If the No. 1 ultrasonic sensor (front right sensor) h ...
Intake Manifold Runner Position Sensor / Switch Circuit (Bank 1) (P2014,P2016,P2017)
DESCRIPTION
The tumble control valve position sensor is a non-contact type sensor.
The position sensor measures the opening angle of the tumble control valve. The
sensor is reliable and accurate, as it is electrically controlled by Hall elements.
...
Inspection
INSPECTION
PROCEDURE
1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY
NOTICE:
Do not disassemble the retractor.
(a) Before installing the front seat outer belt assembly, check the ELR.
(1) When the inclination of the retractor is 15° or less, check that the ...