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Data List/Active Test

  1. READ DATA LIST 

    HINT: 

    Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
    1. Turn the engine switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the engine switch on (IG).
    4. Turn the Techstream on.
    5. Enter the following menus: Body Electrical/(desired system)/Data List.
    6. According to the display on the Techstream, read the Data List.
    7. Using the Techstream, confirm the Data List items to help determine the cause of the problem.
      NOTE:
      • The steering lock ECU communicates with the Techstream through the certification ECU (smart key ECU assembly) which uses CAN communication. If the CAN communication system or certification ECU (smart key ECU assembly) is malfunctioning, Data List items may not be normal.
      • 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/Data List.
      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.
      Steering Unlock Switch State of steering unlock sensor signal output from steering lock actuator assembly/ON or OFF ON: Steering unlocked (Engine switch on [ACC])
      OFF: Steering locked (Engine switch off and door opened)      		 This item can be used to determine the cause of problems when the steering does not lock or unlock.
      HINT: 
      • The steering is considered locked when the lock sensor is ON and the unlock sensor is OFF.
      • The steering is considered unlocked when the lock sensor is OFF and the unlock sensor is ON.
      Str Lock/Unlock Wait T-Out Steering unlock malfunction/Yes or No Yes: Steering lock/unlock timed out (Lock bar stuck, etc.)
      No: Steering locks/unlocks normally within specified time      		 The engine cannot be started when this item is "Yes".
      • *: for Automatic Transaxle
      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).
      #Codes Number of DTCs/0 to 255 - -
      Immobiliser State of immobilizer system determined by certification ECU (smart key ECU assembly)/Set or Unset Set: Engine immobilizer set (engine switch off)
      Unset: Engine immobilizer unset (engine switch on [ACC] or on [IG])
      • When the immobilizer cannot be unset, this item can be used to determine whether the certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is part of the problem.
      • The engine cannot be started when this item displays "Set".
      HINT: 
      • The state of the immobilizer (whether it is set or unset) can be determined through the certification ECU (smart key ECU assembly). If this item displays "Set", the communication between the certification ECU (smart key ECU assembly) and ID code box (immobilizer code ECU) can be determined to be normal.
      • The security indicator light operation is only linked with the state of the immobilizer (set/unset), and is not related to the steering lock operation (lock/unlock), when the immobilizer is set, the security indicator light blinks.
      Steering Lock Sleep Cond Steering lock ECU sleep condition/Yes or No - -
      Steering Lock Start Cond Transmission state of steering lock ECU wake up signal/Yes or No Yes: Wake up signal transmitted
      No: Wake up signal not transmitted      		 -
      Engine Start Condition State of engine start permission signal determined by steering lock actuator assembly (steering lock ECU) and sent to certification ECU (smart key ECU assembly)/OK or NG OK: Engine start permitted
      NG: Engine start prohibited
      • When this item displays "OK", the certification ECU (smart key ECU assembly) has received an unlock confirmation signal from the steering lock ECU and has permitted fuel injection and engine combustion.
      • The engine cannot be started when this item displays "NG".
      Sensor Value Malfunction history of position sensor in steering lock actuator/OK or NG(Past) OK: No record of lock/unlock sensor malfunction in steering lock actuator
      NG(Past): Record of lock/unlock sensors in steering lock actuator turning on at same time exists      		 When this item displays "NG", the sensor inside the steering lock actuator may be malfunctioning, or there may be a mechanical malfunction.
      Power Supply Short Record of malfunction of signal sent to steering lock actuator assembly (motor) from power source control ECU (short circuit)/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 power source control ECU and steering lock actuator assembly (motor).
      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).
      Motor Driver Short Record of malfunction of motor activation circuit in steering lock actuator assembly (short circuit) (DTC B2781 stored)/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 motor activation circuit inside the steering lock actuator assembly (short circuit).
      Motor Driver Open Record of malfunction of motor activation circuit in steering lock actuator assembly (open circuit) (DTC B2781 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 motor activation circuit inside the steering lock actuator assembly (open circuit).
      Lock/Unlock Receive Reception state of steering lock or unlock request signal from certification ECU (smart key ECU assembly)/Yes or No Yes: Record of receiving lock or unlock request signal exists
      No: No record of receiving lock or unlock request signal      		 -
      Lock Bar Stuck Error Record of lock bar not properly unlocking after being commanded to unlock for certain amount of time/OK or NG (Past) OK: No record of stuck lock bar
      NG (Past): Record of stuck lock bar exists      		 -
      Push Start Error Record of malfunction of push-start function due to steering lock actuator/OK or NG (Past) OK: No record of push-start function malfunction
      NG (Past): Record of push-start function malfunction exists      		 -
      IG2 Status State of steering lock actuator assembly IG power supply input (direct line)/ON or OFF ON: Engine switch on (IG)
      OFF: Engine switch off      		 As this is the IG2 relay ON signal, this item displays "OFF" when the engine switch is on (ACC).
      IG(Lin) State of IG signal from LIN communication recognized by steering lock actuator assembly/ON or OFF ON: Engine switch on (IG)
      OFF: Engine switch off      		 The display is the same as "IG2 Status".
      Engine Start Request Reception state of engine start permission signal determined by steering lock actuator assembly and sent to certification ECU (smart key ECU assembly)/OK or NG OK: Receiving signal
      NG: Not receiving signal
      • When this item displays "OK", the certification ECU (smart key ECU assembly) has received an unlock confirmation signal from the steering lock ECU and has permitted fuel injection and engine combustion.
      • The engine cannot be started when this item displays "NG".
      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 (immobiliser 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).
      L Code Check Verification result between ID code box (immobilizer 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 (immobilizer code ECU) or steering lock actuator assembly is not registered or the ID code box (immobilizer code ECU) or steering lock actuator is malfunctioning.
      • The steering cannot be locked.
      • The steering cannot be unlocked (the engine cannot be started).
      Unlock Request Receive Reception state of steering unlock command signal determined by certification ECU (smart key ECU assembly) and sent to ID code box (immobilizer 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.
      Lock Request Receive Reception state of steering lock command signal determined by certification ECU (smart key ECU assembly) and sent to ID code box (immobilizer 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.
      S Code Check(Past) Verification result between certification ECU (smart key ECU assembly) and ID code box (immobilizer code ECU) (Past)/OK or NG(Past) OK: Verification result normal
      NG(Past): Verification result abnormal (Past)      		 -
      L Code Check(Past) Verification result between ID code box (immobilizer code ECU) and steering lock actuator assembly (Past)/OK or NG(Past) OK: Verification result normal
      NG (Past): Verification result abnormal (Past)      		 -
      Steering Lock State of whether steering lock ECU has determined steering is locked/Set or Unset Set: Steering locked
      Unset: Steering unlocked      		 If this item displays "Unset", the steering does not lock.
      Steering Unlock State of whether steering lock ECU has determined steering is unlocked/Set or Unset Set: Steering unlocked
      Unset: Steering locked      		 If this item displays "Unset", the steering does not unlock (engine cannot be started).

      HINT: 

      Unlock operation conditions for the steering lock:

      When the following condition is met, the unlock operation is performed:

      The engine switch is on (ACC) or on (IG).

      • When the engine switch is turned on (ACC) or on (IG) and the electrical key transmitter and certification ECU (smart key ECU assembly) are verified, the steering is unlocked.

      When any of the following conditions is met, verification is performed.

      • The brake pedal (for Automatic Transaxle) or clutch pedal (for Manual Transaxle) is depressed so that the engine can be started.
      • 30 seconds elapse after opening and closing a door.
      • The engine switch is pressed.

      Verification occurs when the code emitted from the electrical key transmitter and the code stored in the certification ECU (smart key ECU assembly) are compared to check that they match.

      Certification ECU (smart key ECU assembly) verification occurs when the S code and L code are verified while the engine is being started or the engine switch is being pushed. The ID code box (immobilizer code ECU) uses the S code to determine whether the certification ECU (smart key ECU assembly) is authorized. The steering lock ECU uses the L code to determine whether the ID code box (immobilizer code ECU) is authorized.

      Lock operation conditions for the steering lock:

      When the following conditions are met and the certification ECU (smart key ECU assembly) has been verified, the lock operation is performed.

      • The engine switch is off.
      • The shift lever is in P (for Automatic Transaxle).
      • A door is opened or a door lock operation (entry door lock, wireless door lock or key-linked lock) is performed.

      HINT: 

      The following example shows the behavior of various Data List items when the shift lever is in P (for Automatic Transaxle), the brake pedal (for Automatic Transaxle) or clutch pedal (for Manual Transaxle) is not depressed, the vehicle is normal and the power source mode changes.

      Fig 1: Steering Lock Data List Display Example
      GTY312873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      Get into the vehicle while carrying the electrical key transmitter. With the engine switch off, the shift lever in P (for Automatic Transaxle) and all the doors closed, perform the following procedures and check the power source mode. 

      *1: Without depressing the brake pedal (for Automatic Transaxle) or clutch pedal (for Manual Transaxle), press the engine switch and check that the power source mode turns on (ACC).

      *2: Without depressing the brake pedal (for Automatic Transaxle) or clutch pedal (for Manual Transaxle), press the engine switch and check that the power source mode turns on (IG).

      *3: Press the engine switch and check that the power source mode turns off.

      *4: Without depressing the brake pedal (for Automatic Transaxle) or clutch pedal (for Manual Transaxle), open the driver side door and check that the steering locks.

      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.
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