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Steering Lock System (Diagnostic Codes & Symptom Tests): Other Lexus IS III

Steering Column 2 illustrations ~5413 words

CAUTION / NOTICE / HINT

Note. When using the Techstream with the engine switch off, connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle. The steering lock system uses LIN communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ] Inspect the fuses for circuits related to this system before performing the following procedure. After performing repairs, confirm that no DTCs are output again. Refer to DTC CHECK/CLEAR [04/2013 - ] When replacing the steering lock ECU (steering lock actuator assembly), registration must be performed. Refer to REGISTRATION [04/2013 - ]

Scheme 76

Scheme 76: PROCEDURE
Scheme 76: PROCEDURE
  1. INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) (POWER SOURCE MODE SIGNAL) Make sure that there is no looseness at the locking part and the connecting part of the connector. Disconnect the K28 steering lock ECU (steering lock actuator assembly) connector. Measure the resistance according to the value(s) in the table below. *a Front view of wire harness connector (to Steering Lock ECU (Steering Lock Actuator Assembly)) Standard Resistance Tester Connection Condition Specified Condition K28-1 (GND) - Body ground Always Below 1 ohms Reconnect the K28 steering lock ECU (steering lock actuator assembly) connector. Measure the voltage according to the value(s) in the table below. *a Component with harness connected (Steering Lock ECU (Steering Lock Actuator Assembly)) Standard Voltage Tester Connection Condition Specified Condition K28-6 (IG2) - K28-1 (GND) Engine switch on (IG) 11 to 14 V K28-6 (IG2) - K28-1 (GND) Engine switch off Below 1 V Result Proceed to OK NG Result: 1 OK REPLACE STEERING LOCK ACTUATOR ASSEMBLY. Refer to «DISASSEMBLY [04/2013 - ]»(ref-665793-S25030043632014102400000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

Note. When using the Techstream with the engine switch off, connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle. The steering lock system uses LIN communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ] When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected. Refer to INITIALIZATION [04/2013 - ] After performing repairs, perform the DTC output confirmation operation, and then confirm that no DTCs are output again. Refer to DTC CHECK/CLEAR [04/2013 - ] When replacing the steering lock ECU (steering lock actuator assembly) or certification ECU (smart key ECU assembly), registration must be performed. Refer to REGISTRATION [04/2013 - ]

PROCEDURE

  1. INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) (MOTOR ACTIVATION COMMAND SIGNAL) Make sure that there is no looseness at the locking part and the connecting part of the connector. Disconnect the K28 steering lock ECU (steering lock actuator assembly) connector. Measure the resistance according to the value(s) in the table below. *a Front view of wire harness connector (to Steering Lock ECU (Steering Lock Actuator Assembly)) Standard Resistance Tester Connection Condition Specified Condition K28-1 (GND) - Body ground Always Below 1 ohms Reconnect the K28 steering lock ECU (steering lock actuator assembly) connector. Move the shift lever to P and turn the engine switch off. Check the signal waveform according to the condition(s) in the table below. *a Component with harness connected (Steering Lock ECU (Steering Lock Actuator Assembly)) *b Steering Lock Motor not Operating *c Steering Lock Motor Operating Standard Frequency Item Content Tester Connection K28-3 (IGE) - K28-1 (GND) Tool Setting 2 V/DIV., 200 ms./DIV. Vehicle Condition Steering lock motor not operating --> Operating --> 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 key and turn the engine switch on (ACC) or on (IG). To lock the steering, turn the engine switch off with the shift lever in P, and then open a door. Result Proceed to OK NG Result: 2 NG See step 4 Result: 1 OK See step 2
  2. CLEAR DTC AND DATA LIST MALFUNCTION RECORD Clear the DTCs. Refer to «DTC CHECK/CLEAR [04/2013 - ]»(ref-665831-S16264057272014102400000) Body Electrical > Smart Access > Clear DTCs 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 the Data List. WARNING: After turning the engine switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notices before proceeding with work. Refer to «PRECAUTION [04/2013 - ]»(ref-665529-S00420865962014102400000) Result Proceed to NEXT Result: 1 NEXT See step 3
  3. READ VALUE USING TECHSTREAM (POWER SUPPLY SHORT) Perform the DTC output confirmation operation. Check if DTC B2782 is output. Refer to «DTC CHECK/CLEAR [04/2013 - ]»(ref-665831-S16264057272014102400000) Body Electrical > Smart Access > Trouble Codes Use the Data List to check if the steering lock control is functioning properly. Body Electrical > Smart Access > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Power Supply Short Record of malfunction of signal sent to steering lock motor (steering lock actuator assembly) from certification ECU (smart key ECU assembly) (short circuit) (DTC B2782 is output) OK or NG (Past) OK: No record of malfunction (short circuit) NG (Past): Record of malfunction (short circuit) exists This item records malfunctions in the circuit between the certification ECU (smart key ECU assembly) and steering lock motor (steering lock actuator assembly). Body Electrical > Smart Access > Data List Tester Display Power Supply Short Result Result Proceed to DTC B2782 is not output. "OK" is displayed on the Techstream. A DTC B2782 is output. "NG(Past)" is displayed on the Techstream. B Result: 1 A SYSTEM RETURNED TO NORMAL (DTC STORED DUE TO BAD CONNECTION, BUT SYSTEM RETURNED TO NORMAL BY RECONNECTING CONNECTOR) Result: 2 B REPLACE STEERING LOCK ACTUATOR ASSEMBLY. Refer to «DISASSEMBLY [04/2013 - ]»(ref-665793-S25030043632014102400000)
  4. CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Make sure that there is no looseness at the locking part and the connecting part of the connectors. Disconnect the K28 steering lock ECU (steering lock actuator assembly) connector. Disconnect the K6 certification ECU (smart key ECU assembly) 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 K28-3 (IGE) - K6-24 (SLR+) Always Below 1 ohms K28-3 (IGE) - Body ground Always 10 kohms or higher K6-24 (SLR+) - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [04/2013 - ]»(ref-665834-S32475940332014102400000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR

Note. When using the Techstream with the engine switch off, connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle. After performing repairs, confirm that no DTCs are output again. Refer to DTC CHECK/CLEAR [04/2013 - ] When replacing the steering lock ECU (steering lock actuator assembly), registration must be performed. Refer to REGISTRATION [04/2013 - ]

HINT

When all the ECUs that are connected via LIN communication cannot communicate with the certification ECU (smart key ECU assembly), DTC B2785 is stored.

  1. CHECK DTC Using the Techstream, check if LIN communication DTC B2785 is output. Refer to «DTC CHECK/CLEAR [04/2013 - ]»(ref-665832-S32731231342014102400000) HINT: If a LIN communication DTC is output, perform troubleshooting for the LIN communication system. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ]»(ref-665832-S17970494342014102400000) Result Result Proceed to DTC B2785 is output. A DTC B2785 is not output. B Result: 1 A GO TO LIN COMMUNICATION SYSTEM (DTC B2785). Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN [04/2013 - ]»(ref-665835-S41345099172014102400000) Result: 2 B REPLACE STEERING LOCK ACTUATOR ASSEMBLY. Refer to «DISASSEMBLY [04/2013 - ]»(ref-665793-S25030043632014102400000)

Note. When using the Techstream with the engine switch off, connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle. Perform either of the following operations to lock/unlock the steering: To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG). To lock the steering, turn the engine switch off with the shift lever in P, and then open a door. Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Table. Refer to DIAGNOSTIC TROUBLE CODE TABLE [04/2013 - ] The steering lock system uses LIN communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ] When replacing the steering lock ECU (steering lock actuator assembly), certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU), registration must be performed. Refer to REGISTRATION [04/2013 - ] After performing repairs, confirm that the problem does not recur. Inspect the fuses for circuits related to this system before performing the following procedure. When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected. Refer to INITIALIZATION [04/2013 - ]

  1. READ VALUE USING TECHSTREAM (LOCK REQUEST RECEIVE) Use the Data List to check if the steering lock command is functioning properly. Body Electrical > Smart Access > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Lock Request Receive Reception state of steering lock request signal by certification ECU (smart key ECU assembly) sent to ID code box (immobilizer code ECU) HINT: The reception state is maintained for 10 seconds. When 10 seconds or more elapsed after receiving the signal, the item changes to "NG". OK or NG OK: Within 10 seconds of opening any door with engine switch off and shift lever in P 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. Body Electrical > Smart Access > Data List Tester Display Lock Request Receive 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 and OK is displayed on the Techstream screen. Result Proceed to OK NG Result: 2 NG See step 4 Result: 1 OK See step 2
  2. INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) (MOTOR ACTIVATION COMMAND SIGNAL) HINT: See step 1 Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 3
  3. CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) HINT: See step 4 Result Proceed to OK NG Result: 1 OK REPLACE STEERING LOCK ACTUATOR ASSEMBLY. Refer to «DISASSEMBLY [04/2013 - ]»(ref-665793-S25030043632014102400000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR
  4. READ VALUE USING TECHSTREAM (FL DOOR COURTESY SW) Using the Techstream, check the following main body ECU (multiplex network body ECU) Data List item by opening and closing the driver door to confirm the state of the front door courtesy light switch assembly. Body Electrical > Main Body > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note FL Door Courtesy SW Front door courtesy light switch assembly 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 door, there is a malfunction in the door courtesy light switch or a related part. Body Electrical > Main Body > Data List Tester Display FL Door Courtesy SW OK The Data List item changes in accordance with the opening and closing of the driver door. Result Proceed to OK NG Result: 3 NG GO TO LIGHTING SYSTEM (FRONT DOOR COURTESY SWITCH CIRCUIT). Refer to «Front Door Courtesy Switch Circuit [04/2013 - ]»(ref-665541-S06963533582014102400000) Result: 1 OK See step 5
  5. READ VALUE USING TECHSTREAM (S CODE CHECK) Use the Data List to check if S code certification is functioning properly. Body Electrical > Smart Access > Data List 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 (immobilizer 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 (immobilizer code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Body Electrical > Smart Access > Data List Tester Display S Code Check OK OK is displayed on the Techstream. HINT: Reasons for verification failure: The certification ECU (smart key ECU assembly) or ID code box (immobilizer 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. Result Proceed to OK NG Result: 2 NG See step 9 Result: 1 OK See step 6
  6. READ VALUE USING TECHSTREAM (L CODE CHECK) Use the Data List to check if L code certification is functioning properly. Body Electrical > Smart Access > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note L Code Check Verification result between ID code box (immobilizer code ECU) and steering lock ECU (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 (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Body Electrical > Smart Access > Data List Tester Display L Code Check OK OK is displayed on the Techstream. HINT: Reasons for verification failure: The steering lock ECU (steering lock actuator assembly) or ID code box (immobilizer 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. Result Proceed to OK NG Result: 2 NG See step 8 Result: 1 OK See step 7
  7. REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Replace the steering lock ECU (steering lock actuator assembly) with a new one. Refer to «DISASSEMBLY [04/2013 - ]»(ref-665793-S25030043632014102400000) Perform registration. Refer to «REGISTRATION [04/2013 - ]»(ref-665555-S15306758692014102400000) Turn the engine switch on (IG). Turn the steering wheel and check the steering condition. OK Steering is unlocked. Result Proceed to OK NG Result: 1 OK END Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [04/2013 - ]»(ref-665834-S32475940332014102400000)
  8. REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) Replace the ID code box (immobilizer code ECU) with a new one. Refer to «REMOVAL [04/2013 - ]»(ref-665834-S03308317182014102400000) Perform registration. Refer to «REGISTRATION [04/2013 - ]»(ref-665555-S15306758692014102400000) Use the Data List to check if L code certification is functioning properly. Body Electrical > Smart Access > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note L Code Check Verification result between ID code box (immobilizer code ECU) and steering lock ECU (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 (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Body Electrical > Smart Access > Data List Tester Display L Code Check OK OK is displayed on the Techstream. Result Proceed to OK NG Result: 1 OK END Result: 2 NG REPLACE STEERING LOCK ACTUATOR ASSEMBLY. Refer to «DISASSEMBLY [04/2013 - ]»(ref-665793-S25030043632014102400000)
  9. REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) Replace the ID code box (immobilizer code ECU) with a new one. Refer to «REMOVAL [04/2013 - ]»(ref-665834-S03308317182014102400000) Perform registration. Refer to «REGISTRATION [04/2013 - ]»(ref-665555-S15306758692014102400000) Use the Data List to check if S code certification is functioning properly. Body Electrical > Smart Access > Data List 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 (immobilizer 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 (immobilizer code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Body Electrical > Smart Access > Data List Tester Display S Code Check OK OK is displayed on the Techstream. Result Proceed to OK NG Result: 1 OK END Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [04/2013 - ]»(ref-665834-S32475940332014102400000)

Note. When using the Techstream with the engine switch off, connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle. Perform either of the following operations to lock/unlock the steering: To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG). To lock the steering, turn the engine switch off with the shift lever in P and then open a door. The steering lock system uses LIN communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ] After performing repairs, confirm that the problem does not recur. Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Table. Refer to DIAGNOSTIC TROUBLE CODE TABLE [04/2013 - ] Inspect the fuses for circuits related to this system before performing the following procedure. When replacing the steering lock ECU (steering lock actuator assembly), certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU), registration must be performed. Refer to REGISTRATION [04/2013 - ] When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected. Refer to INITIALIZATION [04/2013 - ] If the steering lock ECU (steering lock actuator assembly) is replaced, be sure to confirm that the steering is unlocked by turning the steering wheel to the left and right before starting the engine. This function prevents the engine from starting while the steering is locked. If the steering is locked for any reason, open and close a door with the engine switch off, and then unlock the steering by pressing the engine switch.

Scheme 77

Scheme 77: PROCEDURE
Scheme 77: PROCEDURE
  1. CHECK ENGINE SWITCH (SWITCH CONDITION) Check the power source mode change. When the key is inside the vehicle and the shift lever is in P, check that pressing the engine switch with the brake pedal released causes the power source mode to change as follows: OK Off --> On (ACC) --> On (IG) --> Off Result Proceed to OK NG Result: 2 NG GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) (PROBLEM SYMPTOMS TABLE). Refer to «PROBLEM SYMPTOMS TABLE [04/2013 - ]»(ref-665539-S16455710772014102400000) Result: 1 OK See step 2
  2. CHECK INDICATOR With the engine switch on (IG), check that Steering Lock active is displayed on the multi-information display in the combination meter assembly. Result Result Proceed to Steering Lock active is displayed. A Steering Lock active is not displayed. B Result: 2 B See step 4 Result: 1 A See step 3
  3. CHECK STEERING UNLOCK While turning the steering wheel left and right, press the engine switch. Check that the steering is unlocked. Result Result Proceed to The steering is unlocked. A The steering is not unlocked. B Result: 1 A END Result: 2 B See step 4
  4. CHECK FOR DTC Using the Techstream, check if the certification ECU (smart key ECU assembly) DTC is output. Body Electrical > Smart Access > Trouble Codes Body Electrical > Power Source Control > Trouble Codes Result Result Proceed to DTCs are not output. A DTCs are output. B Result: 2 B REPAIR CIRCUIT INDICATED BY OUTPUT CODE Result: 1 A See step 5
  5. READ VALUE USING TECHSTREAM (UNLOCK REQUEST RECEIVE) Use the Data List to check if the steering lock request is functioning properly. Body Electrical > Smart Access > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note Unlock Request Receive Reception state of steering unlock request signal by certification ECU (smart key ECU assembly) sent to ID code box (immobilizer code ECU) HINT: The reception state is maintained for 10 seconds. When 10 seconds or more have elapsed after receiving the signal, the item changes to "NG". OK or 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. Body Electrical > Smart Access > Data List Tester Display Unlock Request Receive 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". Result Proceed to OK NG Result: 2 NG See step 9 Result: 1 OK See step 6
  6. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) Disconnect the K28 steering lock ECU (steering lock actuator assembly) connector. Measure the resistance and voltage according to the value(s) in the table below. *a Front view of wire harness connector (to Steering Lock ECU (Steering Lock Actuator Assembly)) Standard Resistance Tester Connection Condition Specified Condition K28-1 (GND) - Body ground Always Below 1 ohms NOTE: If the result is not as specified, check for looseness in the ground cable connection. Standard Voltage Tester Connection Condition Specified Condition K28-7 (B) - Body ground Always 11 to 14 V Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 7
  7. INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Reconnect the K28 steering lock ECU (steering lock actuator assembly) connector. Check the signal waveform according to the condition(s) in the table below. *a Component with harness connected (Steering Lock ECU (Steering Lock Actuator Assembly)) *b Steering Lock Motor not Operating *c Steering Lock Motor Operating Standard Frequency Item Content Tester Connection K28-3 (IGE) - K28-1 (GND) Tool Setting 2 V/DIV., 200 ms./DIV. Vehicle Condition Steering lock motor not operating --> Operating --> 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 key and turn the engine switch on (ACC) or on (IG). To lock the steering, turn the engine switch off with the shift lever in P, and then open a door. Result Proceed to OK NG Result: 1 OK REPLACE STEERING LOCK ACTUATOR ASSEMBLY. Refer to «DISASSEMBLY [04/2013 - ]»(ref-665793-S25030043632014102400000) Result: 2 NG See step 8
  8. CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Make sure that there is no looseness at the locking part and the connecting part of the connectors. Disconnect the K28 steering lock ECU (steering lock actuator assembly) connector. Disconnect the K6 certification ECU (smart key ECU assembly) 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 K28-3 (IGE) - K6-24 (SLR+) Always Below 1 ohms K28-3 (IGE) - Body ground Always 10 kohms or higher K6-24 (SLR+) - Body ground Always 10 kohms or higher Result Proceed to OK NG Result: 1 OK REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [04/2013 - ]»(ref-665834-S32475940332014102400000) Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR
  9. READ VALUE USING TECHSTREAM (S CODE CHECK) Use the Data List to check if S code certification is functioning properly. Body Electrical > Smart Access > Data List 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 (immobilizer 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 (immobilizer code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Body Electrical > Smart Access > Data List Tester Display S Code Check OK OK is displayed on the Techstream. HINT: Reasons for verification failure: The certification ECU (smart key ECU assembly) or ID code box (immobilizer 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. Result Proceed to OK NG Result: 2 NG See step 13 Result: 1 OK See step 10
  10. READ VALUE USING TECHSTREAM (L CODE CHECK) Use the Data List to check if L code certification is functioning properly. Body Electrical > Smart Access > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note L Code Check Verification result between ID code box (immobilizer code ECU) and steering lock ECU (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 (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Body Electrical > Smart Access > Data List Tester Display L Code Check OK OK is displayed on the Techstream. HINT: Reasons for verification failure: The steering lock ECU (steering lock actuator assembly) or ID code box (immobilizer 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. Result Proceed to OK NG Result: 2 NG See step 12 Result: 1 OK See step 11
  11. REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Replace the steering lock ECU (steering lock actuator assembly) with a new one. Refer to «DISASSEMBLY [04/2013 - ]»(ref-665793-S25030043632014102400000) Perform registration. Refer to «REGISTRATION [04/2013 - ]»(ref-665555-S15306758692014102400000) Turn the engine switch on (IG). Turn the steering wheel and check the steering condition. OK Steering is unlocked. Result Proceed to OK NG Result: 1 OK END Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [04/2013 - ]»(ref-665834-S32475940332014102400000)
  12. REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) Replace the ID code box (immobilizer code ECU) with a new one. Refer to «REMOVAL [04/2013 - ]»(ref-665834-S03308317182014102400000) Perform registration. Refer to «REGISTRATION [04/2013 - ]»(ref-665555-S15306758692014102400000) Use the Data List to check if L code certification is functioning properly. Body Electrical > Smart Access > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note L Code Check Verification result between ID code box (immobilizer code ECU) and steering lock ECU (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 (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Body Electrical > Smart Access > Data List Tester Display L Code Check OK OK is displayed on the Techstream. Result Proceed to OK NG Result: 1 OK END Result: 2 NG REPLACE STEERING LOCK ACTUATOR ASSEMBLY. Refer to «DISASSEMBLY [04/2013 - ]»(ref-665793-S25030043632014102400000)
  13. REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) Replace the ID code box (immobilizer code ECU) with a new one. Refer to «REMOVAL [04/2013 - ]»(ref-665834-S03308317182014102400000) Perform registration. Refer to «REGISTRATION [04/2013 - ]»(ref-665555-S15306758692014102400000) Use the Data List to check if S code certification is functioning properly. Body Electrical > Smart Access > Data List 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 (immobilizer 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 (immobilizer code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started). Body Electrical > Smart Access > Data List Tester Display S Code Check OK OK is displayed on the Techstream. Result Proceed to OK NG Result: 1 OK END Result: 2 NG REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [04/2013 - ]»(ref-665834-S32475940332014102400000)

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