INSPECTION PROCEDURE
NOTICE:
If the power steering ECU has been replaced with a new one, perform the rotation angle sensor initialization and torque sensor
zero point calibration See: Steering and Suspension/Steering/Testing and Inspection/Programming and Relearning.
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: Steering and Suspension/Steering/Testing
and Inspection/Programming and Relearning.
HINT
The assist map is automatically written during the rotation angle sensor initialization and torque sensor zero point calibration.
NEXT -- Continue to next step.
2. CHECK FOR DTC
(a) Check for DTCs See: Steering and Suspension/Steering/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC C1581 is not output.
HINT
DTC C1581 will be cleared after the assist map is written.
NG -- CHECK FOR DTC (CAN COMMUNICATION SYSTEM)
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: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Initial Inspection and Diagnostic
Overview/CAN Communication System/Diagnosis System.
OK:
DTC is not output.
NG -- GO TO CAN COMMUNICATION SYSTEM See: Powertrain Management/Computers and Control Systems/Information
Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/How to Proceed With
Troubleshooting
OK -- Continue to next step.
4. CHECK ECM
(a) Check if an ECM that complies with the vehicle specifications is installed.
OK:
The ECM that complies with vehicle specifications is installed.
NG -- REPLACE ECM See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and
Repair/Removal
OK -- REPLACE POWER STEERING ECU See: Relays and Modules/Relays and Modules - Steering and Suspension/Relays and
Modules - Steering/Steering Control Module/Service and Repair/Removal
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