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Power Steering System (Diagnostic Codes & Circuit Tests): Other Scion FR-S I

Electronic Steering ~3245 words

PROCEDURE

  1. CHECK CONNECTOR CONNECTION CONDITION (TORQUE SENSOR - POWER STEERING ECU ASSEMBLY) Check the connection condition of the z2 torque sensor connector. OK Torque sensor connector is securely connected to the power steering ECU assembly. TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU Assembly) NG --> CONNECT CONNECTOR SECURELY OK: Go to next step
  2. CHECK POWER STEERING ECU ASSEMBLY (TRQV VOLTAGE) Turn the ignition switch off. 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 z2-9 (TRQV) - z2-11 (TRQG) 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 Assembly) NG --> See step 5 OK: Go to next step
  3. CHECK POWER STEERING ECU ASSEMBLY (TRQ1, TRQ2 VOLTAGE) Start the engine. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition z2-8 (TRQ1) - z2-11 (TRQG) Engine running, steering wheel not turned (without load) 2.3 to 2.7 V Engine running, steering wheel turned to right with vehicle stopped 2.3 to 3.8 V Engine running, steering wheel turned to left with vehicle stopped 1.2 to 2.7 V z2-10 (TRQ2) - z2-11 (TRQG) Engine running, steering wheel not turned (without load) 2.3 to 2.7 V Engine running, steering wheel turned to right with vehicle stopped 1.2 to 2.7 V Engine running, steering wheel turned to left with vehicle stopped 2.3 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 Assembly) NG --> See step 4 OK --> See step 5
  4. REPLACE STEERING COLUMN ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  1. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor and calibrate the torque sensor zero point. Refer to «CALIBRATION [07/2013 - ]»(ref-612248-S05281146282014042900000) . NEXT: Go to next step
  2. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . NOTE: If DTC C1515 or C1525 is output even though the rotation angle sensor value initialization and torque sensor zero point calibration have been performed, check the procedure again, and perform calibration and initialization 3 times. RESULT Condition Proceed to DTC C1515 or C1525 is still output after performing rotation angle sensor initialization and torque sensor zero point calibration 3 times. A DTC C1515 or C1525 is not output. B B --> END A: Go to next step
  3. REPLACE POWER STEERING ECU ASSEMBLY Replace the power steering ECU assembly. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000) . NEXT: Go to next step
  4. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor and calibrate the torque sensor zero point. Refer to «CALIBRATION [07/2013 - ]»(ref-612248-S05281146282014042900000) . NEXT: Go to next step
  5. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . NOTE: If DTC C1515 or C1525 is output even though the rotation angle sensor value initialization and torque sensor zero point calibration have been performed, check the procedure again, and perform calibration and initialization 3 times. RESULT Condition Proceed to DTC C1515 or C1525 is still output after performing rotation angle sensor initialization and torque sensor zero point calibration 3 times. A DTC C1515 or C1525 is not output. B B --> END A --> See step 6
  6. REPLACE STEERING COLUMN ASSEMBLY. Refer to «REMOVAL [07/2013 - 12/2013]»(ref-612396-S28826002512014042900000)
  1. CLEAR DTC Clear the DTC(s). Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . NEXT: Go to next step
  2. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor and calibrate the torque sensor zero point. Refer to «CALIBRATION [07/2013 - ]»(ref-612248-S05281146282014042900000) . NEXT: Go to next step
  3. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . NOTE: If DTC C1516 or C1526 is output even though the rotation angle sensor value initialization and torque sensor zero point calibration have been performed, check the procedure again, and perform the calibration and initialization 3 times. RESULT Condition Proceed to DTC C1516 or C1526 is still output after performing rotation angle sensor initialization and torque sensor zero point calibration 3 times. A DTC C1516 or C1526 is not output. B B --> END A: Go to next step
  4. REPLACE POWER STEERING ECU ASSEMBLY Replace the power steering ECU assembly. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000) . NEXT: Go to next step
  5. CLEAR DTC Clear the DTC(s). Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . NEXT: Go to next step
  6. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor and calibrate the torque sensor zero point. Refer to «CALIBRATION [07/2013 - ]»(ref-612248-S05281146282014042900000) . NEXT: Go to next step
  7. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . NOTE: If DTC C1516 or C1526 is output even though the rotation angle sensor value initialization and torque sensor zero point calibration have been performed, check the procedure again, and perform calibration and initialization 3 times. RESULT Condition Proceed to DTC C1516 or C1526 is still output after performing rotation angle sensor initialization and torque sensor zero point calibration 3 times. A DTC C1516 or C1526 is not output. B B --> END A --> See step 8
  8. REPLACE STEERING COLUMN ASSEMBLY. Refer to «REMOVAL [07/2013 - 12/2013]»(ref-612396-S28826002512014042900000)
  1. CHECK FOR DTC Clear the DTC(s). Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . RESULT Result Proceed to DTC is not output. A DTC is output. B B --> See step 3 A --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612229-S16181698712014042900000)
  3. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  1. CHECK CONNECTOR CONNECTION CONDITION (POWER STEERING MOTOR - POWER STEERING ECU ASSEMBLY) Check the connection condition of the z1 power steering motor connector. OK Power steering motor connector is securely connected and locked to the power steering ECU assembly. TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU Assembly) NG --> CONNECT CONNECTOR SECURELY OK: Go to next step
  2. READ VALUE USING TECHSTREAM (MOTOR VOLTAGE) 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 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 between 4 and 35 V 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 between 4 and 35 V 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 between 4 and 35 V The engine is running and the steering wheel is being turned. RESULT Result Proceed to During steering operation, value changes between 4 and 35 V. A During steering operation, voltage is not generated or voltage outside specified range is generated. B B --> See step 3 A --> See step 4
  3. REPLACE STEERING COLUMN ASSEMBLY. Refer to «REMOVAL [07/2013 - 12/2013]»(ref-612396-S28826002512014042900000)
  4. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  1. CHECK CONNECTOR CONNECTION CONDITION (ROTATION ANGLE SENSOR - POWER STEERING ECU ASSEMBLY) Check the connection condition of the z2 rotation angle sensor connector. OK Rotation angle sensor connector is securely connected to the power steering ECU assembly. TEXT IN ILLUSTRATION *a Component with harness connected (Power Steering ECU Assembly) 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. Start the engine. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Data List. EMPS Tester Display Measurement Item/Range Normal Condition Diagnostic Note Motor Rotation Angle Motor rotation angle/ Min.: 0.000 deg Max.: 360.000 deg 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 STEERING COLUMN ASSEMBLY Disconnect the z2 rotation angle sensor connector from the power steering ECU assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z2-14 (RZSN) - z2-7 (RZG) At 23°C (73°F) 75.2 to 112.8 ohms z2-5 (RZV) - z2-7 (RZG) At 23°C (73°F) 27.6 to 41.4 ohms z2-13 (RZCS) - z2-7 (RZG) At 23°C (73°F) 73.6 to 110.4 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Rotation Angle Sensor) NG --> See step 4 OK --> See step 5
  4. REPLACE STEERING COLUMN ASSEMBLY. Refer to «REMOVAL [07/2013 - 12/2013]»(ref-612396-S28826002512014042900000)
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  1. CHECK OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM) Check if DTC U0416 is output. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . RESULT Result Proceed to DTC U0416 is not output. A DTC U0416 is output. B HINT: DTC U0416 indicates a skid control ECU communication malfunction in the power steering system. B --> See step 3 A: Go to next step
  2. CHECK OTHER DTC OUTPUT (BRAKE CONTROL SYSTEM) Using the Techstream, check for DTCs and confirm that there are no problems in the brake control system. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612232-S10846003982014042900000) . 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 [07/2013 - 12/2013]»(ref-612381-S39654712422014042900000)
  4. GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART [07/2013 - ]»(ref-612232-S34402733812014042900000)
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  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. 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 9 to 16 V The ignition switch is ON. OK The normal condition value is displayed the Techstream. NG --> See step 2 OK --> See step 3
  2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BATTERY/BODY GROUND) Disconnect the A14 and A15 power steering ECU assembly connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A15-6 (IG) - Body ground Ignition switch ON 9 to 16 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-2 (PGND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Steering ECU Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  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. EMPS Tester Display Measurement Item/Range Normal Condition Diagnostic Note PIG Power Supply Power source voltage to active motor/ Min.: 0.0000 V Max.: 20.1531 V 9 to 16 V The engine is running and power steering is operating. OK The normal condition value is displayed the Techstream. NG --> See step 2 OK --> See step 3
  2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BATTERY/BODY GROUND) Disconnect the A14 power steering ECU assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A14-1 (PIG) - Body ground Always 9 to 16 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-2 (PGND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Steering ECU Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  1. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT Initialize the rotation angle sensor and calibrate the torque sensor zero point. Refer to «CALIBRATION [07/2013 - ]»(ref-612248-S05281146282014042900000) . 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 [07/2013 - ]»(ref-612248-S41680360012014042900000) . OK DTC C1581 is not output. HINT: DTC C1581 is 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 [07/2013 - 12/2013]»(ref-612381-S33318737382014042900000) . OK DTC is not output. NG --> See step 6 OK: Go to next step
  4. CHECK ECM Check if an ECM that complies with the vehicle specifications is installed. NG --> See step 7 OK --> See step 5
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  6. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612381-S39654712422014042900000)
  7. REPLACE ECM. Refer to «REMOVAL [07/2013 - 12/2013]»(ref-612354-S32372465292014042900000)
  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 [07/2013 - 12/2013]»(ref-612381-S33318737382014042900000) . OK DTC is not output. NG --> See step 4 OK: Go to next step
  2. CHECK ECM Check if an ECM that complies with the vehicle specifications is installed. NG --> See step 6 OK: Go to next step
  3. CHECK SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Check if a skid control ECU (brake actuator assembly) that complies with the vehicle specifications is installed. NG --> See step 7 OK --> See step 5
  4. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612381-S39654712422014042900000)
  5. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  6. REPLACE ECM. Refer to «REMOVAL [07/2013 - 12/2013]»(ref-612354-S32372465292014042900000)
  7. REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY). Refer to «REMOVAL [07/2013 - ]»(ref-612418-S24597964742014042900000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Clear the DTC(s). Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . 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 [07/2013 - 12/2013]»(ref-612229-S16181698712014042900000)
  3. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612381-S39654712422014042900000)
  1. CHECK HARNESS AND CONNECTOR Turn the ignition switch to ON. Check the indication condition of the EPS warning light by wiggling the power steering ECU assembly connector and wire harness up and down, and right and left. OK EPS 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 [07/2013 - 12/2013]»(ref-612381-S33318737382014042900000) . OK DTC is not output. NG --> See step 10 OK: Go to next step
  3. 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. 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 9 to 16 V The ignition switch is ON. OK The normal condition value is displayed the Techstream. NG --> See step 6 OK: Go to next step
  4. 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. EMPS Tester Display Measurement Item/Range Normal Condition Diagnostic Note PIG Power Supply Power source voltage to active motor/ Min.: 0.0000 V Max.: 20.1531 V 9 to 16 V The engine is running and power steering is operating. OK The normal condition value is displayed the Techstream. 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 [07/2013 - 12/2013]»(ref-612236-S05662004982014042900000) . COMBINATION METER Tester Display Test Part Control Range Diagnostic Note Indicat. EPS EPS warning light OFF/ON Vehicle is stopped and engine is idling Check that the EPS 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. NG --> See step 8 OK --> See step 9
  6. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BATTERY/BODY GROUND) Disconnect the A14 and A15 power steering ECU assembly connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A15-6 (IG) - Body ground Ignition switch ON 9 to 16 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-2 (PGND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Steering ECU Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  7. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BATTERY/BODY GROUND) Disconnect the A14 power steering ECU assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A14-1 (PIG) - Body ground Always 9 to 16 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A14-2 (PGND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Steering ECU Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  8. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612384-S14032382702014042900000)
  9. REPLACE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612405-S27458328192014042900000)
  10. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612381-S39654712422014042900000)

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