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Power Steering System (Diagnostic Codes & Circuit Tests): Other Scion tC II рестайлинг

Electronic Steering ~4663 words

PROCEDURE

  1. CHECK CONNECTOR CONNECTION CONDITION Check the connection condition of the z17 torque sensor connector. OK Torque sensor connector is securely connected to the power steering ECU. TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU) NG --> CONNECT CONNECTOR SECURELY OK: Go to next step
  2. CHECK POWER STEERING ECU (TRQV VOLTAGE) Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition z17-6 (TRQV) - Body ground Ignition switch ON 4.5 to 5.5 V HINT: When the value is within the specified range, record the value. TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU) NG --> See step 5 OK: Go to next step
  3. CHECK POWER STEERING ECU (TRQ1, TRQ2 VOLTAGE) Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition z17-5 (TRQ1) - z17-8 (TRQG) Engine running, steering wheel not turned (no load) 2.3 to 2.7 V Engine running, steering wheel turned to right with vehicle stopped 2.5 to 3.8 V Engine running, steering wheel turned to left with vehicle stopped 1.2 to 2.5 V z17-7 (TRQ2) - z17-8 (TRQG) Engine running, steering wheel not turned (no load) 2.3 to 2.7 V Engine running, steering wheel turned to right with vehicle stopped 1.2 to 2.5 V Engine running, steering wheel turned to left with vehicle stopped 2.5 to 3.8 V Calculate the difference between the value recorded when measuring the voltage at terminal TRQV in the previous step, and the sum of the output of torque sensor 1 and torque sensor 2. OK 0.3 V or less (Absolute value) TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU) NG --> See step 4 OK --> See step 5
  4. REPLACE STEERING COLUMN ASSEMBLY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615273-S21909252342014050900000)
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615307-S16477103622014050900000)
  1. CHECK CONNECTOR CONNECTION CONDITION Check the connection condition of the z17 torque sensor connector. OK Torque sensor connector is securely connected to the power steering ECU. TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU) NG --> CONNECT CONNECTOR SECURELY OK: Go to next step
  2. CHECK POWER STEERING ECU (TRQV VOLTAGE) Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition z17-6 (TRQV) - Body ground Ignition switch ON 4.5 to 5.5 V HINT: When the value is within the specified range, record the value. TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU) NG --> See step 5 OK: Go to next step
  3. CHECK POWER STEERING ECU (TRQ1, TRQ2 VOLTAGE) Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition z17-5 (TRQ1) - z17-8 (TRQG) Engine running, steering wheel not turned (no load) 2.3 to 2.7 V Engine running, steering wheel turned to right with vehicle stopped 2.5 to 3.8 V Engine running, steering wheel turned to left with vehicle stopped 1.2 to 2.5 V z17-7 (TRQ2) - z17-8 (TRQG) Engine running, steering wheel not turned (no load) 2.3 to 2.7 V Engine running, steering wheel turned to right with vehicle stopped 1.2 to 2.5 V Engine running, steering wheel turned to left with vehicle stopped 2.5 to 3.8 V Calculate the difference between the value recorded when measuring the voltage at terminal TRQV in the previous step, and the sum of the output of torque sensor 1 and torque sensor 2. OK 0.3 V or less (Absolute value) TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU) NG --> See step 4 OK --> See step 5
  4. REPLACE STEERING COLUMN ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615273-S09660136302014050900000)
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000)
  1. CHECK FOR DTC Check if DTC C1516 is output. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . Result Result Proceed to C1516 is output A No output B B --> See step 3 A: Go to next step
  2. CLEAR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . NEXT: Go to next step
  3. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor value and calibrate the torque sensor zero point. Refer to «CALIBRATION [05/2013 - ]»(ref-615122-S16222205482014050900000) . NEXT: Go to next step
  4. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . Result Condition Proceed to DTC C1515 or C1516 is still output after performing torque sensor zero point calibration 3 times A DTC C1515 or C1516 is not output B NOTE: If DTC C1515 or C1516 is output even though the torque sensor zero point calibration has been performed, confirm the procedure again and perform calibration 3 times. B --> END A --> See step 5
  5. GO TO DTCS C1511 TO C1514 AND DTC C1517. Refer to «DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal»(ref-615306-S05374320202014050900000)
  1. CHECK FOR DTC Check if DTC C1516 is output. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . Result Result Proceed to C1516 is output A No output B B --> See step 3 A: Go to next step
  2. CLEAR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . NEXT: Go to next step
  3. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor value and calibrate the torque sensor zero point. Refer to «CALIBRATION [05/2013 - ]»(ref-615122-S16222205482014050900000) . NEXT: Go to next step
  4. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . Result Condition Proceed to DTC C1515 or C1516 is still output after performing torque sensor zero point calibration 3 times A DTC C1515 or C1516 is not output B NOTE: If DTC C1515 or C1516 is output even though the torque sensor zero point calibration has been performed, confirm the procedure again and perform calibration 3 times. B --> END A --> See step 5
  5. GO TO DTCS C1511 TO C1514 AND DTC C1517. Refer to «DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal»(ref-615306-S11822747462014050900000)
  1. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . OK DTC is not output. NG --> See step 3 OK --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615109-S39439522442014050900000)
  3. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615307-S16477103622014050900000)
  1. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . OK DTC is not output. NG --> See step 3 OK --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615109-S05098042762014050900000)
  3. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000)
  1. CHECK CONNECTOR CONNECTION CONDITION Check the connection condition of the z19 power steering motor connector. OK Power steering motor connector is securely connected and locked to the power steering ECU. TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU) NG --> CONNECT CONNECTOR SECURELY OK: Go to next step
  2. READ VALUE USING TECHSTREAM (MOTOR TERMINAL VOLT) Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Data List. Select the items "Motor Terminal Volt(U)", "Motor Terminal Volt(V)" and "Motor Terminal Volt(W)" in the Data List and read the value displayed on the Techstream. EMPS Tester Display Measurement Item/Range Normal Condition Diagnostic Note Motor Terminal Volt(U) Motor terminal voltage (U phase)/ Min.: 0.000 V Max.: 98.000 V Value changes within 4 to 35 V range The engine is running and the steering wheel is being turned. Motor Terminal Volt(V) Motor terminal voltage (V phase)/ Min.: 0.000 V Max.: 98.000 V Value changes within 4 to 35 V range The engine is running and the steering wheel is being turned. Motor Terminal Volt(W) Motor terminal voltage (W phase)/ Min.: 0.000 V Max.: 98.000 V Value changes within 4 to 35 V range The engine is running and the steering wheel is being turned. Result Result Proceed to During steering operation, value changes within 4 to 35 V range A During steering operation, voltage is not generated B B --> See step 6 A: Go to next step
  3. REPLACE POWER STEERING ECU ASSEMBLY Replace the power steering ECU assembly. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000) . NEXT: Go to next step
  4. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor value and calibrate the torque sensor zero point. Refer to «CALIBRATION [05/2013 - ]»(ref-615122-S16222205482014050900000) . NEXT: Go to next step
  5. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . OK DTCs C1522, C1523, C1524 and C1555 are not output. NG --> See step 6 OK --> END
  6. REPLACE STEERING COLUMN ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615273-S09660136302014050900000)
  1. CHECK FOR DTC Check if DTC C1526 is output. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . Result Result Proceed to C1526 is output A No output B B --> See step 3 A: Go to next step
  2. CLEAR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . NEXT: Go to next step
  3. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor value and calibrate the torque sensor zero point. Refer to «CALIBRATION [05/2013 - ]»(ref-615122-S16222205482014050900000) . NEXT: Go to next step
  4. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . Result Condition Proceed to DTC C1525 or C1526 is still output after performing rotation angle sensor value initialization 3 times A DTC C1525 or C15126 is not output B NOTE: If DTC C1525 or C1526 is output even though the rotation angle sensor value initialization has been performed, confirm the procedure again and perform initialization 3 times. B --> END A --> See step 5
  5. GO TO DTC C1528. Refer to «DTC C1528: Motor Rotation Angle Sensor Malfunction»(ref-615306-S04326588562014050900000)
  1. CHECK FOR DTC Check if DTC C1526 is output. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . Result Result Proceed to C1526 is output A No output B B --> See step 3 A: Go to next step
  2. CLEAR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . NEXT: Go to next step
  3. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor value and calibrate the torque sensor zero point. Refer to «CALIBRATION [05/2013 - ]»(ref-615122-S16222205482014050900000) . NEXT: Go to next step
  4. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . Result Condition Proceed to DTC C1525 or C1526 is still output after performing rotation angle sensor value initialization 3 times A DTC C1525 or C15126 is not output B NOTE: If DTC C1525 or C1526 is output even though the rotation angle sensor value initialization has been performed, confirm the procedure again and perform initialization 3 times. B --> END A --> See step 5
  5. GO TO DTC C1528. Refer to «DTC C1528: Motor Rotation Angle Sensor Malfunction»(ref-615306-S21318283122014050900000)
  1. CHECK CONNECTOR CONNECTION CONDITION Check the connection condition of the z18 motor rotation angle sensor connector. OK Motor rotation angle sensor connector is securely connected to the power steering ECU. TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU) NG --> CONNECT CONNECTOR SECURELY OK: Go to next step
  2. READ VALUE USING TECHSTREAM (MOTOR ROTATION ANGLE) Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Data List. Select the item "Motor Rotation Angle" in the Data List and read the value displayed on the Techstream. EMPS Tester Display Measurement Item/Range Normal Condition Diagnostic Note Motor Rotation Angle Motor rotation angle/ Min.: 0.000 deg Max.: 360.000 deg During steering operation, motor rotation angle value changes from 0 to 360° The engine is running and the steering wheel is being turned. OK During steering operation, motor rotation angle value changes from 0 to 360°. NG --> See step 3 OK --> See step 5
  3. CHECK MOTOR ROTATION ANGLE SENSOR Disconnect the z18 motor rotation angle sensor connector from the power steering ECU. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z18-6 (RSIN) - z18-3 (RGND) At 23°C (73°F) 75.2 to 112.8 ohms z18-1 (R+) - z18-3 (RGND) At 23°C (73°F) 27.6 to 41.4 ohms z18-5 (RCOS) - z18-3 (RGND) At 23°C (73°F) 73.2 to 110.8 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Motor Rotation Angle Sensor) NG --> See step 4 OK --> See step 5
  4. REPLACE STEERING COLUMN ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615273-S09660136302014050900000)
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000)
  1. CHECK FOR OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM) Check if DTC U0129 is output. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . Result Result Proceed to No output A U0129 is output B HINT: DTC U0129 indicates a brake actuator assembly (skid control ECU) communication malfunction in the power steering system. B --> See step 3 A: Go to next step
  2. CHECK FOR OTHER DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) Using the Techstream, check for DTCs and confirm that there are no problems in the vehicle stability control system. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615110-S21940115262014050900000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 4 A --> See step 5
  3. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615285-S08854909152014050900000)
  4. GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART [05/2013 - 01/2014]»(ref-615110-S11464147592014050900000)
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615307-S16477103622014050900000)
  1. CHECK FOR OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM) Check if DTC U0129 is output. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . Result Result Proceed to No output A U0129 is output B HINT: DTC U0129 indicates a brake actuator assembly (skid control ECU) communication malfunction in the power steering system. B --> See step 3 A: Go to next step
  2. CHECK FOR OTHER DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) Using the Techstream, check for DTCs and confirm that there are no problems in the vehicle stability control system. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615110-S24831061062014050900000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 4 A --> See step 5
  3. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615285-S25999187862014050900000)
  4. GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART [01/2014 - ]»(ref-615110-S27682549452014050900000)
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000)
  1. READ VALUE USING TECHSTREAM (IG POWER SUPPLY) Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Data List. Select the item "IG Power Supply" in the Data List and read the value displayed on the Techstream. EMPS Tester Display Measurement Item/Range Normal Condition Diagnostic Note IG Power Supply ECU power source voltage/ Min.: 0.0000 V Max.: 20.1531 V 11 to 14 V The ignition switch is ON. OK Normal condition value is displayed on the Techstream. NG --> See step 2 OK --> See step 3
  2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND) Disconnect the C48 and A26 power steering ECU connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C48-6 (IG) - Body ground Ignition switch ON 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A26-2 (PGND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Steering ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615307-S16477103622014050900000)
  1. READ VALUE USING TECHSTREAM (IG POWER SUPPLY) Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Data List. Select the item "IG Power Supply" in the Data List and read the value displayed on the Techstream. EMPS Tester Display Measurement Item/Range Normal Condition Diagnostic Note IG Power Supply ECU power source voltage/ Min.: 0.0000 V Max.: 20.1531 V 11 to 14 V The ignition switch is ON. OK Normal condition value is displayed on the Techstream. NG --> See step 2 OK --> See step 3
  2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND) Disconnect the C48 and A26 power steering ECU connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C48-6 (IG) - Body ground Ignition switch ON 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A26-2 (PGND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Steering ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000)
  1. READ VALUE USING TECHSTREAM (PIG POWER SUPPLY) Turn the ignition switch off. Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Data List. Select the item "PIG Power Supply" in the Data List and read the value displayed on the Techstream. EMPS Tester Display Measurement Item/Range Normal Condition Diagnostic Note PIG Power Supply Power source voltage sent to active motor/ Min.: 0.0000 V Max.: 20.1531 V 11 to 14 V The engine is running and the power steering is operating. OK Normal condition value is displayed on the Techstream. NG --> See step 2 OK --> See step 3
  2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND) Disconnect the A26 power steering ECU connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A26-1 (PIG) - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A26-2 (PGND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Steering ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000)
  1. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor value and calibrate the torque sensor zero point. Refer to «CALIBRATION [05/2013 - ]»(ref-615122-S16222205482014050900000) . HINT: The assist map is automatically written during the rotation angle sensor initialization and torque sensor zero point calibration. NEXT: Go to next step
  2. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . OK DTC C1581 is not output. HINT: DTC C1581 will be cleared after the assist map is written. NG --> See step 3 OK --> END
  3. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Using the Techstream, check for DTCs and confirm that there are no problems in the CAN communication system. Refer to «DIAGNOSIS SYSTEM [05/2013 - 01/2014]»(ref-615285-S11042255172014050900000) . OK DTC is not output. NG --> See step 5 OK --> See step 4
  4. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615307-S16477103622014050900000)
  5. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615285-S08854909152014050900000)
  1. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor value and calibrate the torque sensor zero point. Refer to «CALIBRATION [05/2013 - ]»(ref-615122-S16222205482014050900000) . HINT: The assist map is automatically written during the rotation angle sensor initialization and torque sensor zero point calibration. NEXT: Go to next step
  2. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . OK DTC C1581 is not output. HINT: DTC C1581 will be cleared after the assist map is written. NG --> See step 3 OK --> END
  3. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Using the Techstream, check for DTCs and confirm that there are no problems in the CAN communication system. Refer to «DIAGNOSIS SYSTEM [01/2014 - ]»(ref-615285-S37069111882014050900000) . OK DTC is not output. NG --> See step 5 OK --> See step 4
  4. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000)
  5. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615285-S25999187862014050900000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Using the Techstream, check for DTCs and confirm that there are no problems in the CAN communication system. Refer to «DIAGNOSIS SYSTEM [05/2013 - 01/2014]»(ref-615285-S11042255172014050900000) . OK DTC is not output. NG --> See step 3 OK --> See step 2
  2. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615307-S16477103622014050900000)
  3. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615285-S08854909152014050900000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Using the Techstream, check for DTCs and confirm that there are no problems in the CAN communication system. Refer to «DIAGNOSIS SYSTEM [01/2014 - ]»(ref-615285-S37069111882014050900000) . OK DTC is not output. NG --> See step 3 OK --> See step 2
  2. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000)
  3. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615285-S25999187862014050900000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - 01/2014]»(ref-615122-S36854037212014050900000) . OK DTC is not output. NG --> See step 3 OK --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615109-S39439522442014050900000)
  3. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615285-S08854909152014050900000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [01/2014 - ]»(ref-615122-S40844125412014050900000) . OK DTC is not output. NG --> See step 3 OK --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615109-S05098042762014050900000)
  3. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615285-S25999187862014050900000)
  1. CHECK HARNESS AND CONNECTOR Turn the ignition switch to ON. Check the indication condition of the power steering warning light by wiggling the power steering ECU connector and wire harness up and down, and right and left. OK Power steering warning light indication condition does not change. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Check for DTCs. Refer to «DIAGNOSIS SYSTEM [05/2013 - 01/2014]»(ref-615285-S11042255172014050900000) . OK DTC is not output. NG --> See step 10 OK: Go to next step
  3. READ VALUE USING TECHSTREAM (IG POWER SUPPLY) See step 1 NG --> See step 6 OK: Go to next step
  4. READ VALUE USING TECHSTREAM (PIG POWER SUPPLY) See step 1 NG --> See step 7 OK: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM (METER / GAUGE SYSTEM) Perform the Active Test of the combination meter using the Techstream. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615117-S36676886072014050900000) . COMBINATION METER Tester Display Test Part Control Range Diagnostic Note Indicat. EPS Power steering warning light ON or OFF Confirm that the vehicle is stopped with the ignition switch ON. Check that the power steering warning light operates in accordance with the Active Test. HINT: Reconnect the connectors and restore the vehicle to its previous condition before checking the combination meter. OK The power steering warning light turns on and off in accordance with the Techstream operation. NG --> See step 9 OK --> See step 8
  6. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  7. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  8. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615307-S16477103622014050900000)
  9. GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615117-S41836243672014050900000)
  10. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615285-S08854909152014050900000)
  1. CHECK HARNESS AND CONNECTOR Turn the ignition switch to ON. Check the indication condition of the power steering warning light by wiggling the power steering ECU connector and wire harness up and down, and right and left. OK Power steering warning light indication condition does not change. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Check for DTCs. Refer to «DIAGNOSIS SYSTEM [01/2014 - ]»(ref-615285-S37069111882014050900000) . OK DTC is not output. NG --> See step 10 OK: Go to next step
  3. READ VALUE USING TECHSTREAM (IG POWER SUPPLY) See step 1 NG --> See step 6 OK: Go to next step
  4. READ VALUE USING TECHSTREAM (PIG POWER SUPPLY) See step 1 NG --> See step 7 OK: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM (METER / GAUGE SYSTEM) Perform the Active Test of the combination meter using the Techstream. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615117-S36676886072014050900000) . COMBINATION METER Tester Display Test Part Control Range Diagnostic Note Indicat. EPS Power steering warning light ON or OFF Confirm that the vehicle is stopped with the ignition switch ON. Check that the power steering warning light operates in accordance with the Active Test. HINT: Reconnect the connectors and restore the vehicle to its previous condition before checking the combination meter. OK The power steering warning light turns on and off in accordance with the Techstream operation. NG --> See step 9 OK --> See step 8
  6. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  7. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  8. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615307-S38890223382014050900000)
  9. GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615117-S24661717922014050900000)
  10. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615285-S25999187862014050900000)

More articles — Power Steering System (Diagnostic Codes & Circuit Tests)