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 |
System Description
SYSTEM DESCRIPTION
1. FUNCTION DESCRIPTION
(a) Steering Cooperative Control
(1) Enhanced-VSC performs coordinated control consisting of VSC and electronic
power steering. By integrating these preventive safety functions, Enhanced-VSC ensures
excellent d ...
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 ...
Registration
REGISTRATION
CAUTION / NOTICE / HINT
NOTICE:
When the automatic transaxle is replaced, the transaxle compensation
code must be input into the TCM (proceed to Procedure 1). After the automatic
transaxle is reinstalled, the Quick Response (QR) ...