Inspection Procedure
NOTE:
If replacing the power steering ECU, initialize and calibrate the torque sensor zero point (See CALIBRATION
).
- PERFORM ASSIST MAP WRITING
- Connect a Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Set the Techstream to Test Mode (select "Signal Check").
HINT:
Refer to the Techstream operator's manual for further details.
- Wait for 5 seconds or more.
HINT:
Assist map is automatically written when approximately 5 seconds have elapsed after setting the Techstream to Test Mode. DTC C1581/81 will be cleared after the assist map is written.
- Check for DTCs (See DTC CHECK / CLEAR
).
OK: DTC C1581/81 is not output.
NG: Go to step 2
OK : END
- CHECK CAN COMMUNICATION SYSTEM
- Check for DTCs of the CAN communication system (See
DIAGNOSIS SYSTEM
).
OK: DTCs are not output.
NG: GO TO CAN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )
OK: Go to Next Step
- Check for DTCs of the CAN communication system (See
DIAGNOSIS SYSTEM
).
- CHECK ECM
- Check if a qualified ECM is installed.
OK: A qualified ECM is installed.
NG: REPLACE ECM
OK : REPLACE POWER STEERING ECU
- Check if a qualified ECM is installed.