Inspection Procedure
WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
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 7 seconds or more.
HINT:
Assist map is automatically written when approximately 7 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: REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
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: Go to Next Step
- Check if a qualified ECM is installed.
- CHECK SKID CONTROL ECU
- Check if a qualified skid control ECU is installed.
OK: A qualified skid control ECU is installed.
NG: REPLACE SKID CONTROL ECU
OK: REPLACE POWER STEERING ECU
- Check if a qualified skid control ECU is installed.