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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Stop And Start System - Diagnostic Codes (1 Of 3) >> Stop And Start System >> VEHICLE CONTROL HISTORY (RoB) [11/2023 - ] >> VEHICLE CONTROL HISTORY (RoB) [11/2023 - ]

VEHICLE CONTROL HISTORY (RoB) [11/2023 - ]

  1. DESCRIPTION 
    • Vehicle Control History is a function that captures and stores ECU data when triggered by specific vehicle behavior.
    • If the customer states that there was a problem such as the engine not restarting after having been stopped by the stop and start system, it may be possible to diagnose the cause of the malfunction by checking the vehicle history information and Freeze Frame Data.
  2. PRECAUTIONS 
    • As Vehicle Control History may be overwritten whenever the trigger conditions are met, make sure to save Vehicle Control History before performing any inspections.
    • As Vehicle Control History may be stored when performing an Active Test, learning, etc., make sure to clear the Vehicle Control History before returning the vehicle to the customer.
  3. CHECK VEHICLE CONTROL HISTORY 
    1. Enter the following menus: Powertrain / Stop and Start / Utility / Vehicle Control History (RoB).

      Powertrain > Stop and Start > Utility 

      Tester Display
      Vehicle Control History (RoB)
      VEHICLE CONTROL HISTORY ITEM (STOP AND START SYSTEM)

      Code Tester Display Trigger Description Stored Group Reference Inspection Procedure Link
      X0870 Stop&Start Prohibition (Power Management) - 04 - -
      X0871 Stop&Start Restart (Power Management) - 05 - -
      X0872 Stop&Start Restart Failure (Engine Restart)
      • In a situation where engine is restarting after being stopped by the stop and start system, within 2 seconds after starter status* changes from ON to OFF, engine speed is 200 rpm or less for 0.1 seconds or more.

        *: For other than tandem starter: "Starter status"

        for tandem starter: "Starter motor status"

      • Refer to illustration below
      		 01 Proceed to "After Engine Stops due to Stop and Start System, Engine does not Restart" in Problem Symptoms Table Refer to After Engine Stops due to Stop and Start System, Engine does not Restart [10/2022 - ]
      X0873 Hood Open during Stop&Start (Engine Stall) While engine was stopped by stop and start system, the hood was opened, causing an engine stall. 02 Proceed to "Caused by Hood" troubleshooting procedure of "After Engine Stops due to Stop and Start System, Engine does not Restart" in Problem Symptoms Table Refer to After Engine Stops due to Stop and Start System, Engine does not Restart [10/2022 - ]
      X0874 Stop&Start Restart Failure (Engine Restart after Engine Stall) In a situation where engine is restarting after a failed start by the stop and start system, within 2 seconds after STA changes from ON to OFF, engine speed is 200 rpm or less for 0.1 seconds or more. 06 Proceed to "Failure to Restart from IG-ON Engine Stall" in Problem Symptoms Table Refer to Failure to Restart from IG-ON Engine Stall [10/2022 - ]
      X0875 Voltage Low for Stop&Start Control Module (Engine Start from Stop&Start)
      • In a situation where engine is restarting after being stopped by the stop and start system, the battery voltage decreases below the operation guaranteed voltage
      • Refer to illustration below
      		 03 - -
      X0877 Life Cycle of Starter The number of starter operations reaches the specified limit. 08 Proceed to "Stop and Start System does not Operate" in Problem Symptoms Table Refer to Stop and Start System does not Operate [11/2023 - ]
      X087A BBC Boosting Output Overcurrent Overcurrent is detected at the B41, B43, IG41 and EMOP terminals in the engine stop and start ECU 08 Proceed to "Backup Boost Converter Circuit" in Problem Symptoms Table Refer to Backup Boost Converter Circuit [11/2023 - ]
      X250C Air Conditioner System Malfunction A stop and start system prohibit request or start request is received from the air conditioning amplifier assembly 12 Proceed to "HOW TO PROCEED WITH TROUBLESHOOTING" in Air Conditioning System Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]
      X250D Adaptive Cruise Control System Malfunction When the vehicle is being driven at 10 km/h (6 mph) or more, a stop and start cancellation request from the dynamic radar cruise control (w/ Full Speed Range Following Function) continues for 3 seconds or more 13 Proceed to "After Engine Stops due to Stop and Start System, Engine does not Restart" in Problem Symptoms Table Refer to After Engine Stops due to Stop and Start System, Engine does not Restart [10/2022 - ]
      X250E Parking Support Brake System Malfunction When the vehicle is being driven at 30 km/h (19 mph) or more, the parking support brake system control status continues for 3 seconds or more 14 Proceed to "HOW TO PROCEED WITH TROUBLESHOOTING" in Parking Support Brake System Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]

      Judgment Region for Failure to Restart from Stop and Start (X0872) 

      GTY1026122Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Judgment Region for Voltage Drop When Restarting from Stop and Start (X0875) 

      GTY1026121Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      1. When the engine is restarted by the stop and start system, if there is only slight voltage depression of the battery and the engine speed does not reach the level at which a complete combustion judgment is made, there may be a malfunction in the starting circuit system. (Figure 1)
      2. When the engine is restarted by the stop and start system, if there is significant voltage depression of the battery and the engine speed does not increase to 200 rpm, starter lock should be considered. (Figure 2)
      3. When the engine is restarted by the stop and start system, if there is significant voltage depression of the battery and initial combustion does not occur during starter driven revolution, engine control factors (injector system, ignition system, STA input open circuit, etc.) should be considered. (Figure 3)
      4. When the engine is restarted by the stop and start system, if there is significant voltage depression of the battery and engine stall occurs after the engine speed reaches the level at which a complete combustion judgment is made, engine control factors (accumulated deposits, fuel system, etc.) should be considered. (Figure 4)

      FIGURE 1 

      GTY1041235Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      FIGURE 2 

      GTY1041136Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      FIGURE 3 

      GTY1041039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      FIGURE 4 

      GTY1041158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      STORED DATA

      Stored Group Number of Records Number of Multi Freeze Frame Data Points Multi Freeze Frame Data Sampling Period Note
      01 2 codes

      HINT: 

      • If codes are detected on different trips, the newest data will be stored.
      • Within the same trip, if the same code is detected again, only the newest code will be stored.
      • Even within the same trip, in the case of a different code, the newest data will be stored.
      		 7 points
      (1 point at detection + 5 points before detection + 1 point after detection)      		 0.5 seconds The data can be cleared using the GTS.
      02 1 code

      HINT: 

      • If codes are detected on different trips, the newest data will be stored.
      • Within the same trip, if the same code is detected again, only the newest code will be stored.
      • Even within the same trip, in the case of a different code, the newest data will be stored.
      		 3 points
      (1 point at detection + 1 point before detection + 1 point after detection)      		 0.5 seconds The data can be cleared using the GTS.
      03 2 codes

      HINT: 

      • If codes are detected on different trips, the newest data will be stored.
      • Within the same trip, if the same code is detected again, only the newest code will be stored.
      • Even within the same trip, in the case of a different code, the newest data will be stored.
      		 3 points
      (1 point at detection 0 point before detection +2 point after detection)      		 0.5 seconds The data can be cleared using the GTS.
      04 8 codes

      HINT: 

      • If codes are detected on different trips, the newest data will be stored.
      • Within the same trip, if the same code is detected again, only the newest code will be stored.
      • Even within the same trip, in the case of a different code, the newest data will be stored.
      		 2 points
      (1 point at detection + 1 point before detection + 0 points after detection)      		 1.0 seconds The data can be cleared using the GTS.
      05 8 codes

      HINT: 

      • If codes are detected on different trips, the newest data will be stored.
      • Within the same trip, if the same code is detected again, only the newest code will be stored.
      • Even within the same trip, in the case of a different code, the newest data will be stored.
      		 2 points
      (1 point at detection + 1 point before detection + 0 points after detection)      		 1.0 seconds The data can be cleared using the GTS.
      06 1 code

      HINT: 

      • If codes are detected on different trips, the newest data will be stored.
      • Within the same trip, if the same code is detected again, only the newest code will be stored.
      • Even within the same trip, in the case of a different code, the newest data will be stored.
      		 7 points
      (1 point at detection + 5 points before detection + 1 point after detection)      		 0.5 seconds The data can be cleared using the GTS.
      08 1 code
      HINT: 
      Once detected, the latest data is not stored until the data is cleared.      		 1 point (multi Freeze Frame Data not available) - The data can be cleared using the GTS.
      12 2 code

      HINT: 

      • If codes are detected on different trips, the newest data will be stored.
      • Within the same trip, if the same code is detected again, only the newest code will be stored.
      • Even within the same trip, in the case of a different code, the newest data will be stored.
      		 1 point (multi Freeze Frame Data not available) - The data can not be cleared using the GTS.
      13 1 code

      HINT: 

      • If codes are detected on different trips, the newest data will be stored.
      • Within the same trip, if the same code is detected again, only the newest code will be stored.
      		 1 point (multi Freeze Frame Data not available) - The data can not be cleared using the GTS.
      14 1 code

      HINT: 

      • If codes are detected on different trips, the newest data will be stored.
      • Within the same trip, if the same code is detected again, only the newest code will be stored.
      		 1 point (multi Freeze Frame Data not available) - The data can not be cleared using the GTS.

      HINT: 

      • The multi Freeze Frame Data makes it possible to check the vehicle data before and after the trigger point at which the vehicle control history was stored.
      • The number of stored points differs according to the stored group.
      • If the value of a data item does not change across the Freeze Frame Data points, only the value from the detection point at which the vehicle control history was stored will be displayed.

      Stored Group 01 

      GTY1026082Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Stored Group 02 

      GTY1026115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Stored Group 03 

      GTY1026068Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Stored Group 04 

      GTY1020207Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Stored Group 05 

      GTY1020207Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Stored Group 06 

      GTY1026113Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Only 1 measurement point can be displayed for stored group 08, 12, 13 or 14 Freeze Frame Data.

  4. CLEAR VEHICLE CONTROL HISTORY 
    1. Enter the following menus: Powertrain / Stop and Start / Utility / Vehicle Control History (RoB) / Clear.
      NOTE:

      By performing this procedure, all stored Vehicle Control History items will be cleared.

      Powertrain > Stop and Start > Utility 

      Tester Display
      Vehicle Control History (RoB)
  5. VEHICLE CONTROL HISTORY FREEZE FRAME DATA 
    1. Enter the following menus: Powertrain / Stop and Start / Utility / Vehicle Control History (RoB).

      Powertrain > Stop and Start > Utility 

      Tester Display
      Vehicle Control History (RoB)
    2. Select the name of a vehicle control history item to display the data from the time of control.
    3. Check the output data.

      Vehicle Control History Data 

      GTY1180837Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Vehicle Control History Data 

      GTY1180836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Vehicle Control History Data 

      GTY1180608Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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