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Steering Lock System (Diagnostic Codes & Symptom Tests): Other Scion tC II рестайлинг

Steering Column ~6894 words

PROCEDURE

  1. CHECK DTC OUTPUT Using the Techstream, check if LIN communication DTC B2785 is output. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615309-S11930075772014050900000) . HINT: If a LIN communication DTC is output, perform troubleshooting for the LIN communication system. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615309-S21837371712014050900000) . RESULT Result Proceed to DTC B2785 is output A DTC B2785 is not output B B --> See step 3 A --> See step 2
  2. GO TO LIN COMMUNICATION SYSTEM (DTC B2785). Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN»(ref-615311-S05187564732014050900000)
  3. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  1. CHECK DTC OUTPUT Using the Techstream, check if LIN communication DTC B2785 is output. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615309-S11930075772014050900000) . HINT: If a LIN communication DTC is output, perform troubleshooting for the LIN communication system. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615309-S12081060082014050900000) . RESULT Result Proceed to DTC B2785 is output A DTC B2785 is not output B B --> See step 3 A --> See step 2
  2. GO TO LIN COMMUNICATION SYSTEM (DTC B2785). Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN»(ref-615311-S24850779512014050900000)
  3. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  1. INSPECT STEERING LOCK ECU Disconnect the C18 steering lock ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C18-1 (GND) - Body ground Always Below 1 ohms Reconnect the C18 steering lock ECU connector. Turn the engine switch off, make sure that the steering is unlocked and move the shift lever to P (for Automatic Transaxle). Check the signal waveform according to the condition(s) in the table below. TEXT IN ILLUSTRATION *a Component with harness connected (Steering Lock ECU) *b Steering lock motor not operating *c Steering lock motor operating MEASUREMENT CONDITIONS Item Content Tester Connection C18-3 (IGE) - C18-1 (GND) Tool Setting 2 V/DIV., 200 ms./DIV. Vehicle Condition Steering lock motor not operating --> Steering lock motor operating --> Steering lock motor not operating HINT: When taking measurements when the lock motor is stopped, it is not necessary to perform any operations. In order to take measurements when the lock motor is operating, perform either of the following operations: To unlock the steering, carry the electrical key transmitter and turn the engine switch on (ACC) or on (IG) while the shift lever is in P*. To lock the steering, turn the engine switch off with the shift lever in P*, and then open a door. *: for Automatic Transaxle NG --> See step 4 OK: Go to next step
  2. CLEAR DTC AND DATA LIST MALFUNCTION RECORD Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615308-S26071111752014050900000) . Disconnect the cable from the negative (-) battery terminal, wait for 30 seconds or more, and then reconnect the cable to the negative (-) battery terminal to clear the record of malfunctions stored in Power Supply Open in the Data List. NEXT: Go to next step
  3. READ VALUE USING TECHSTREAM (POWER SUPPLY OPEN) Perform the DTC output confirmation operation. Check if DTC B2782 is output. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615308-S26071111752014050900000) . Use the Data List to check if steering lock control is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Power Supply Open Record of malfunction of signal sent to steering lock actuator assembly (motor) from power source control ECU (open circuit) (DTC B2782 stored)/OK or NG(Past) OK: No record of malfunction (open circuit) NG(Past): Record of malfunction (open circuit) exists This item records malfunctions in the circuit between the power source control ECU and steering lock actuator assembly (motor). RESULT Result Proceed to B2782 is not output "OK" is displayed on the Techstream A B2782 is output "NG(Past)" is displayed on the Techstream B B --> See step 5 A --> SYSTEM RETURNED TO NORMAL (DTC STORED DUE TO BAD CONNECTION, BUT SYSTEM RETURNED TO NORMAL BY RECONNECTING CONNECTOR)
  4. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the C43 power source control ECU connector. Disconnect the C18 steering lock ECU connector. Check for deformation and corrosion of the connector case and terminals. OK There is no deformation or corrosion of the connector case or terminals. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C43-8 (SLR+) - C18-3 (IGE) Always Below 1 ohms C43-8 (SLR+) or C18-3 (IGE) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  5. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  6. REPLACE POWER SOURCE CONTROL ECU. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615304-S36922080022014050900000)
  1. INSPECT STEERING LOCK ECU Disconnect the C18 steering lock ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C18-1 (GND) - Body ground Always Below 1 ohms Reconnect the C18 steering lock ECU connector. Turn the engine switch off, make sure that the steering is unlocked and move the shift lever to P (for Automatic Transaxle). Check the signal waveform according to the condition(s) in the table below. TEXT IN ILLUSTRATION *a Component with harness connected (Steering Lock ECU) *b Steering lock motor not operating *c Steering lock motor operating MEASUREMENT CONDITIONS Item Content Tester Connection C18-3 (IGE) - C18-1 (GND) Tool Setting 2 V/DIV., 200 ms./DIV. Vehicle Condition Steering lock motor not operating --> Steering lock motor operating --> Steering lock motor not operating HINT: When taking measurements when the lock motor is stopped, it is not necessary to perform any operations. In order to take measurements when the lock motor is operating, perform either of the following operations: To unlock the steering, carry the electrical key transmitter and turn the engine switch on (ACC) or on (IG) while the shift lever is in P*. To lock the steering, turn the engine switch off with the shift lever in P*, and then open a door. *: for Automatic Transaxle NG --> See step 4 OK: Go to next step
  2. CLEAR DTC AND DATA LIST MALFUNCTION RECORD Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615308-S26071111752014050900000) . Disconnect the cable from the negative (-) battery terminal, wait for 30 seconds or more, and then reconnect the cable to the negative (-) battery terminal to clear the record of malfunctions stored in Power Supply Open in the Data List. NEXT: Go to next step
  3. READ VALUE USING TECHSTREAM (POWER SUPPLY OPEN) Perform the DTC output confirmation operation. Check if DTC B2782 is output. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615308-S26071111752014050900000) . Use the Data List to check if steering lock control is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Power Supply Open Record of malfunction of signal sent to steering lock actuator assembly (motor) from power source control ECU (open circuit) (DTC B2782 stored)/OK or NG(Past) OK: No record of malfunction (open circuit) NG(Past): Record of malfunction (open circuit) exists This item records malfunctions in the circuit between the power source control ECU and steering lock actuator assembly (motor). RESULT Result Proceed to B2782 is not output "OK" is displayed on the Techstream A B2782 is output "NG(Past)" is displayed on the Techstream B B --> See step 5 A --> SYSTEM RETURNED TO NORMAL (DTC STORED DUE TO BAD CONNECTION, BUT SYSTEM RETURNED TO NORMAL BY RECONNECTING CONNECTOR)
  4. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the C43 power source control ECU connector. Disconnect the C18 steering lock ECU connector. Check for deformation and corrosion of the connector case and terminals. OK There is no deformation or corrosion of the connector case or terminals. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C43-8 (SLR+) - C18-3 (IGE) Always Below 1 ohms C43-8 (SLR+) or C18-3 (IGE) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  5. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  6. REPLACE POWER SOURCE CONTROL ECU. Refer to «REMOVAL [01/2014 - ]»(ref-615304-S39493598012014050900000)
  1. CHECK STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Disconnect the C18 steering lock ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C18-1 (GND) - Body ground Always Below 1 ohms Reconnect the C18 steering lock ECU connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C18-6 (IG2) - C18-1 (GND) Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V TEXT IN ILLUSTRATION *a Component with harness connected (Steering Lock ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
  2. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  1. CHECK STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Disconnect the C18 steering lock ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C18-1 (GND) - Body ground Always Below 1 ohms Reconnect the C18 steering lock ECU connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C18-6 (IG2) - C18-1 (GND) Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V TEXT IN ILLUSTRATION *a Component with harness connected (Steering Lock ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
  2. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  1. CHECK DTC (ALL) Using the Techstream, confirm the output of DTCs for all systems. OK No DTCs are output. NOTE: When using the Techstream with the engine switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Key / Trouble Codes. Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615308-S26071111752014050900000) . NG --> GO TO DTC CHART OK: Go to next step
  2. READ VALUE USING TECHSTREAM (LOCK REQUEST RECEIVE) Use the Data List to check if the steering lock command is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Lock Request Receive Reception state of steering lock command signal determined by certification ECU (smart key ECU assembly) and sent to ID code box (immobiliser code ECU)/OK or NG HINT: The reception state is maintained for 10 seconds. When 10 seconds or more elapse after receiving the signal, the item changes to "NG". OK: Within 10 seconds of opening any door with engine switch off and shift lever in P (for Automatic Transaxle) NG: Except above If this item does not change to "OK" even though the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning. OK The certification ECU (smart key ECU assembly) receives a lock request signal within 10 seconds of turning the engine switch from on (IG) to off and opening a door with the shift lever in P (for Automatic Transaxle), and OK is displayed on the Techstream screen. NG --> See step 5 OK: Go to next step
  3. INSPECT STEERING LOCK ECU See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the C43 power source control ECU connector. Disconnect the C18 steering lock ECU connector. Check for deformation and corrosion of the connector case and terminals. OK There is no deformation or corrosion of the connector case or terminals. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C43-8 (SLR+) - C18-3 (IGE) Always Below 1 ohms C43-8 (SLR+) or C18-3 (IGE) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 17
  5. READ VALUE USING TECHSTREAM (FL DOOR COURTESY SW) Using the Techstream, check the following main body ECU Data List item by opening and closing the driver side door to confirm the state of the driver side door courtesy light switch. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note FL Door Courtesy SW Front door courtesy switch LH/ON or OFF ON: Front door LH open OFF: Front door LH closed If this item does not change according to the actual state of the driver side door, there is a malfunction in the door courtesy light switch or a related part. RESULT Result Proceed to Data List item changes in accordance with opening and closing of driver side door. for Automatic Transaxle A for Manual Transaxle B Data List item does not change in accordance with opening and closing of driver side door. C B --> See step 7 C --> See step 16 A: Go to next step
  6. READ VALUE USING TECHSTREAM (SHIFT P SIGNAL) Use the Data List to check if the P shift lever position signal is functioning properly. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift P Signal Shift position (P)/ON or OFF ON: Shift lever in P OFF: Shift lever not in P Use this item to determine if the shift position switch is malfunctioning. OK ON (shift lever in P) and OFF (shift lever not in P) appear on the screen according to the shift lever position. NG --> See step 11 OK: Go to next step
  7. READ VALUE USING TECHSTREAM (IGNITION SWITCH) Use the Data List to check if the switch status signal is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ignition Switch State of certification ECU (smart key ECU assembly) IG power supply input/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off This item displays "OFF" when the engine switch is on (ACC). OK The Data List item changes according to the operation of the engine switch. NG --> See step 13 OK: Go to next step
  8. READ VALUE USING TECHSTREAM (S CODE CHECK) Use the Data List to check if S code certification is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU)/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). OK OK is displayed on the Techstream. HINT: Reasons for verification failure: The certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning. There is a problem with the communication between ECUs. An ECU is replaced, but is not registered. An ECU is replaced with an ECU which has a code already stored in it. NG --> See step 14 OK: Go to next step
  9. READ VALUE USING TECHSTREAM (L CODE CHECK) Use the Data List to check if L code certification is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock actuator assembly/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the ID code box (immobiliser code ECU) or steering lock actuator assembly is not registered or the ID code box (immobiliser code ECU) or steering lock actuator is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). OK OK is displayed on the Techstream. HINT: Reasons for verification failure: The steering lock ECU or ID code box (immobiliser code ECU) is malfunctioning. There is a problem with the communication between ECUs. An ECU is replaced, but is not registered. An ECU is replaced with an ECU which has a code already stored in it. NG --> See step 15 OK: Go to next step
  10. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Replace the steering lock actuator assembly (steering lock ECU) with a new one. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000) . Perform the registration procedures. Refer to «REGISTRATION [05/2013 - ]»(ref-615123-S24541716512014050900000) . Turn the engine switch on (IG). Operate the steering wheel and check the steering condition. OK Steering is unlocked. NG --> See step 18 OK --> END
  11. INSPECT SHIFT LOCK CONTROL ECU Inspect the shift lock control ECU. Refer to «INSPECTION [05/2013 - ]»(ref-615232-S11510923002014050900000) . NG --> See step 21 OK: Go to next step
  12. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - SHIFT LOCK CONTROL ECU AND BODY GROUND) Disconnect the C43 power source control ECU connector. Disconnect the C4 shift lock control ECU connector. Check for deformation and corrosion of the connector case and terminals. OK There is no deformation or corrosion of the connector case or terminals. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C43-16 (P) - C4-7 (P2) Always Below 1 ohms C43-16 (P) or C4-7 (P2) - Body ground Always 10 kohms or higher C4-1 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 22
  13. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the C35 certification ECU (smart key ECU assembly) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C35-15 (E) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C35-16 (IG) - Body ground Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Certification ECU [Smart Key ECU Assembly]) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 23
  14. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Replace the certification ECU (smart key ECU assembly) with a new one. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615312-S21015765112014050900000) . Perform the registration procedures. Refer to «REGISTRATION [05/2013 - ]»(ref-615123-S24541716512014050900000) . Use the Data List to check if S code certification is functioning properly again. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU)/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). OK OK is displayed on the Techstream. NG --> See step 20 OK --> END
  15. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Replace the steering lock actuator assembly (steering lock ECU) with a new one. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000) . Perform the registration procedures. Refer to «REGISTRATION [05/2013 - ]»(ref-615123-S24541716512014050900000) . Use the Data List to check if L code certification is functioning properly again. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock actuator assembly/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the ID code box (immobiliser code ECU) or steering lock actuator assembly is not registered or the ID code box (immobiliser code ECU) or steering lock actuator is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). NG --> See step 19 OK --> END
  16. GO TO LIGHTING SYSTEM (DOOR COURTESY SWITCH CIRCUIT). Refer to «Door Courtesy Switch Circuit»(ref-615116-S28658954462014050900000)
  17. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  18. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615312-S13109161422014050900000)
  19. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615312-S13109161422014050900000)
  20. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615312-S13109161422014050900000)
  21. REPLACE SHIFT LOCK CONTROL ECU SUB-ASSEMBLY. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615232-S18075591022014050900000)
  22. REPLACE POWER SOURCE CONTROL ECU. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615304-S36922080022014050900000)
  23. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615312-S21015765112014050900000)
  1. CHECK DTC (ALL) Using the Techstream, confirm the output of DTCs for all systems. OK No DTCs are output. NOTE: When using the Techstream with the engine switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Key / Trouble Codes. Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615308-S26071111752014050900000) . NG --> GO TO DTC CHART OK: Go to next step
  2. READ VALUE USING TECHSTREAM (LOCK REQUEST RECEIVE) Use the Data List to check if the steering lock command is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Lock Request Receive Reception state of steering lock command signal determined by certification ECU (smart key ECU assembly) and sent to ID code box (immobiliser code ECU)/OK or NG HINT: The reception state is maintained for 10 seconds. When 10 seconds or more elapse after receiving the signal, the item changes to "NG". OK: Within 10 seconds of opening any door with engine switch off and shift lever in P (for Automatic Transaxle) NG: Except above If this item does not change to "OK" even though the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning. OK The certification ECU (smart key ECU assembly) receives a lock request signal within 10 seconds of turning the engine switch from on (IG) to off and opening a door with the shift lever in P (for Automatic Transaxle), and OK is displayed on the Techstream screen. NG --> See step 5 OK: Go to next step
  3. INSPECT STEERING LOCK ECU See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the C43 power source control ECU connector. Disconnect the C18 steering lock ECU connector. Check for deformation and corrosion of the connector case and terminals. OK There is no deformation or corrosion of the connector case or terminals. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C43-8 (SLR+) - C18-3 (IGE) Always Below 1 ohms C43-8 (SLR+) or C18-3 (IGE) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 17
  5. READ VALUE USING TECHSTREAM (FL DOOR COURTESY SW) Using the Techstream, check the following main body ECU Data List item by opening and closing the driver side door to confirm the state of the driver side door courtesy light switch. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note FL Door Courtesy SW Front door courtesy switch LH/ON or OFF ON: Front door LH open OFF: Front door LH closed If this item does not change according to the actual state of the driver side door, there is a malfunction in the door courtesy light switch or a related part. RESULT Result Proceed to Data List item changes in accordance with opening and closing of driver side door. for Automatic Transaxle A for Manual Transaxle B Data List item does not change in accordance with opening and closing of driver side door. C B --> See step 7 C --> See step 16 A: Go to next step
  6. READ VALUE USING TECHSTREAM (SHIFT P SIGNAL) Use the Data List to check if the P shift lever position signal is functioning properly. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift P Signal Shift position (P)/ON or OFF ON: Shift lever in P OFF: Shift lever not in P Use this item to determine if the shift position switch is malfunctioning. OK ON (shift lever in P) and OFF (shift lever not in P) appear on the screen according to the shift lever position. NG --> See step 11 OK: Go to next step
  7. READ VALUE USING TECHSTREAM (IGNITION SWITCH) Use the Data List to check if the switch status signal is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ignition Switch State of certification ECU (smart key ECU assembly) IG power supply input/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off This item displays "OFF" when the engine switch is on (ACC). OK The Data List item changes according to the operation of the engine switch. NG --> See step 13 OK: Go to next step
  8. READ VALUE USING TECHSTREAM (S CODE CHECK) Use the Data List to check if S code certification is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU)/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). OK OK is displayed on the Techstream. HINT: Reasons for verification failure: The certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning. There is a problem with the communication between ECUs. An ECU is replaced, but is not registered. An ECU is replaced with an ECU which has a code already stored in it. NG --> See step 14 OK: Go to next step
  9. READ VALUE USING TECHSTREAM (L CODE CHECK) Use the Data List to check if L code certification is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock actuator assembly/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the ID code box (immobiliser code ECU) or steering lock actuator assembly is not registered or the ID code box (immobiliser code ECU) or steering lock actuator is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). OK OK is displayed on the Techstream. HINT: Reasons for verification failure: The steering lock ECU or ID code box (immobiliser code ECU) is malfunctioning. There is a problem with the communication between ECUs. An ECU is replaced, but is not registered. An ECU is replaced with an ECU which has a code already stored in it. NG --> See step 15 OK: Go to next step
  10. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Replace the steering lock actuator assembly (steering lock ECU) with a new one. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000) . Perform the registration procedures. Refer to «REGISTRATION [05/2013 - ]»(ref-615123-S24541716512014050900000) . Turn the engine switch on (IG). Operate the steering wheel and check the steering condition. OK Steering is unlocked. NG --> See step 18 OK --> END
  11. INSPECT SHIFT LOCK CONTROL ECU Inspect the shift lock control ECU. Refer to «INSPECTION [05/2013 - ]»(ref-615232-S11510923002014050900000) . NG --> See step 21 OK: Go to next step
  12. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - SHIFT LOCK CONTROL ECU AND BODY GROUND) Disconnect the C43 power source control ECU connector. Disconnect the C4 shift lock control ECU connector. Check for deformation and corrosion of the connector case and terminals. OK There is no deformation or corrosion of the connector case or terminals. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C43-16 (P) - C4-7 (P2) Always Below 1 ohms C43-16 (P) or C4-7 (P2) - Body ground Always 10 kohms or higher C4-1 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 22
  13. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the C35 certification ECU (smart key ECU assembly) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C35-15 (E) - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C35-16 (IG) - Body ground Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Certification ECU [Smart Key ECU Assembly]) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 23
  14. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Replace the certification ECU (smart key ECU assembly) with a new one. Refer to «REMOVAL [01/2014 - ]»(ref-615312-S21548903732014050900000) . Perform the registration procedures. Refer to «REGISTRATION [05/2013 - ]»(ref-615123-S24541716512014050900000) . Use the Data List to check if S code certification is functioning properly again. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU)/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). OK OK is displayed on the Techstream. NG --> See step 20 OK --> END
  15. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Replace the steering lock actuator assembly (steering lock ECU) with a new one. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000) . Perform the registration procedures. Refer to «REGISTRATION [05/2013 - ]»(ref-615123-S24541716512014050900000) . Use the Data List to check if L code certification is functioning properly again. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock actuator assembly/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the ID code box (immobiliser code ECU) or steering lock actuator assembly is not registered or the ID code box (immobiliser code ECU) or steering lock actuator is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). NG --> See step 19 OK --> END
  16. GO TO LIGHTING SYSTEM (DOOR COURTESY SWITCH CIRCUIT). Refer to «Door Courtesy Switch Circuit»(ref-615116-S28658954462014050900000)
  17. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  18. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [01/2014 - ]»(ref-615312-S27129648902014050900000)
  19. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [01/2014 - ]»(ref-615312-S27129648902014050900000)
  20. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [01/2014 - ]»(ref-615312-S27129648902014050900000)
  21. REPLACE SHIFT LOCK CONTROL ECU SUB-ASSEMBLY. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615232-S18075591022014050900000)
  22. REPLACE POWER SOURCE CONTROL ECU. Refer to «REMOVAL [01/2014 - ]»(ref-615304-S39493598012014050900000)
  23. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [01/2014 - ]»(ref-615312-S21548903732014050900000)
  1. CHECK DTC (ALL) See step 1 NG --> GO TO DTC CHART OK: Go to next step
  2. CHECK ENGINE SWITCH (SWITCH CONDITION) Check the power source mode change. When the electrical key transmitter is inside the vehicle and the shift lever is in P (for Automatic Transaxle), check that pressing the engine switch with the brake pedal (for Automatic Transaxle) or clutch pedal (for Manual Transaxle) released causes the power source mode to change as follows: OK Off --> on (ACC) --> on (IG) --> off NG --> See step 13 OK: Go to next step
  3. READ VALUE USING TECHSTREAM (UNLOCK REQUEST RECEIVE) Use the Data List to check if the steering lock command is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Unlock Request Receive Reception state of steering unlock command signal determined by certification ECU (smart key ECU assembly) and sent to ID code box (immobiliser code ECU)/OK or NG HINT: The reception state is maintained for 10 seconds. When 10 seconds or more elapse after receiving the signal, the item changes to "NG". OK: Within 10 seconds of turning engine switch on (IG) or on (ACC) or starting engine NG: Except above If the unlock signal has not been received, the engine cannot be started. If this item does not change to "OK" even though the steering unlock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning. OK Within 10 seconds of turning the engine switch on (ACC) or on (IG) or starting the engine, the Data List item changes to "OK". NG --> See step 6 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - BATTERY AND BODY GROUND) Disconnect the C18 steering lock ECU connector. Measure the resistance and voltage according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C18-1 (GND) - Body ground Always Below 1 ohms NOTE: If the result is not as specified, check for looseness in the connection which leads to ground. Standard Voltage Tester Connection Condition Specified Condition C18-7 (B) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Steering Lock ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT STEERING LOCK ECU Reconnect the C18 steering lock ECU connector. Check the signal waveform according to the condition(s) in the table below. MEASUREMENT CONDITIONS Item Content Tester Connection C18-3 (IGE) - C18-1 (GND) Tool Setting 2 V/DIV., 200 ms./DIV. Vehicle Condition Steering lock motor not operating --> Steering lock motor operating --> Steering lock motor not operating HINT: When taking measurements when the lock motor is stopped, it is not necessary to perform any operations. In order to take measurements when the lock motor is operating, perform either of the following operations: To unlock the steering, carry the electrical key transmitter and turn the engine switch on (ACC) or on (IG) while the shift lever is in P*. To lock the steering, turn the engine switch off with the shift lever in P*, and then open a door. *: for Automatic Transaxle TEXT IN ILLUSTRATION *a Component with harness connected (to Steering Lock ECU) *b Steering lock motor not operating *c Steering lock motor operating NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
  6. READ VALUE USING TECHSTREAM (S CODE CHECK) See step 8 NG --> See step 9 OK: Go to next step
  7. READ VALUE USING TECHSTREAM (L CODE CHECK) See step 9 NG --> See step 10 OK: Go to next step
  8. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) See step 10 NG --> See step 12 OK --> END
  9. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) See step 14 NG --> See step 15 OK --> END
  10. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) See step 15 NG --> See step 14 OK --> END
  11. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  12. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615312-S21015765112014050900000)
  13. GO TO SMART KEY SYSTEM (FOR START FUNCTION) (PROBLEM SYMPTOMS TABLE). Refer to «PROBLEM SYMPTOMS TABLE [05/2013 - 01/2014]»(ref-615115-S32347928002014050900000)
  14. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615312-S13109161422014050900000)
  15. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615312-S13109161422014050900000)
  1. CHECK DTC (ALL) See step 1 NG --> GO TO DTC CHART OK: Go to next step
  2. CHECK ENGINE SWITCH (SWITCH CONDITION) Check the power source mode change. When the electrical key transmitter is inside the vehicle and the shift lever is in P (for Automatic Transaxle), check that pressing the engine switch with the brake pedal (for Automatic Transaxle) or clutch pedal (for Manual Transaxle) released causes the power source mode to change as follows: OK Off --> on (ACC) --> on (IG) --> off NG --> See step 13 OK: Go to next step
  3. READ VALUE USING TECHSTREAM (UNLOCK REQUEST RECEIVE) Use the Data List to check if the steering lock command is functioning properly. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Unlock Request Receive Reception state of steering unlock command signal determined by certification ECU (smart key ECU assembly) and sent to ID code box (immobiliser code ECU)/OK or NG HINT: The reception state is maintained for 10 seconds. When 10 seconds or more elapse after receiving the signal, the item changes to "NG". OK: Within 10 seconds of turning engine switch on (IG) or on (ACC) or starting engine NG: Except above If the unlock signal has not been received, the engine cannot be started. If this item does not change to "OK" even though the steering unlock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning. OK Within 10 seconds of turning the engine switch on (ACC) or on (IG) or starting the engine, the Data List item changes to "OK". NG --> See step 6 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - BATTERY AND BODY GROUND) Disconnect the C18 steering lock ECU connector. Measure the resistance and voltage according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C18-1 (GND) - Body ground Always Below 1 ohms NOTE: If the result is not as specified, check for looseness in the connection which leads to ground. Standard Voltage Tester Connection Condition Specified Condition C18-7 (B) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Steering Lock ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT STEERING LOCK ECU Reconnect the C18 steering lock ECU connector. Check the signal waveform according to the condition(s) in the table below. MEASUREMENT CONDITIONS Item Content Tester Connection C18-3 (IGE) - C18-1 (GND) Tool Setting 2 V/DIV., 200 ms./DIV. Vehicle Condition Steering lock motor not operating --> Steering lock motor operating --> Steering lock motor not operating HINT: When taking measurements when the lock motor is stopped, it is not necessary to perform any operations. In order to take measurements when the lock motor is operating, perform either of the following operations: To unlock the steering, carry the electrical key transmitter and turn the engine switch on (ACC) or on (IG) while the shift lever is in P*. To lock the steering, turn the engine switch off with the shift lever in P*, and then open a door. *: for Automatic Transaxle TEXT IN ILLUSTRATION *a Component with harness connected (to Steering Lock ECU) *b Steering lock motor not operating *c Steering lock motor operating NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
  6. READ VALUE USING TECHSTREAM (S CODE CHECK) See step 8 NG --> See step 9 OK: Go to next step
  7. READ VALUE USING TECHSTREAM (L CODE CHECK) See step 9 NG --> See step 10 OK: Go to next step
  8. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) See step 10 NG --> See step 12 OK --> END
  9. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) See step 14 NG --> See step 15 OK --> END
  10. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) See step 15 NG --> See step 14 OK --> END
  11. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to «DISASSEMBLY [05/2013 - ]»(ref-615273-S21299910952014050900000)
  12. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [01/2014 - ]»(ref-615312-S21548903732014050900000)
  13. GO TO SMART KEY SYSTEM (FOR START FUNCTION) (PROBLEM SYMPTOMS TABLE). Refer to «PROBLEM SYMPTOMS TABLE [01/2014 - ]»(ref-615115-S41806824642014050900000)
  14. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [01/2014 - ]»(ref-615312-S27129648902014050900000)
  15. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL [01/2014 - ]»(ref-615312-S27129648902014050900000)

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