Lexus ES: Vehicle Control History
VEHICLE CONTROL HISTORY
NOTICE:
Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again.
CHECK VEHICLE CONTROL HISTORY (LANE CONTROL SYSTEM)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / Lane Control / Utility / Vehicle Control History (RoB)
Chassis > Lane Control > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
(e) According to the display on the Techstream, read the Vehicle Control History (RoB).
Vehicle Control History (RoB)| Multi-information Display | Code | Tester Display | Description | Diagnostic Note |
|---|---|---|---|---|
| *1: The pre-collision system outputs requests for "Front Camera Unavailable" or "Front Camera Unavailable See Owner's Manual" to be displayed on the multi-information display in the combination meter assembly. | ||||
| LTA Malfunction Visit Your Dealer | X2000 | Yaw Rate Sensor Malfunction | The forward recognition camera received a yaw rate sensor malfunction signal from the skid control ECU (brake booster with master cylinder assembly). | Perform troubleshooting for the electronically controlled brake system. |
| LTA Malfunction Visit Your Dealer | X2001 | Steering Angle Sensor Malfunction | The forward recognition camera received a steering sensor malfunction signal from the steering sensor. | Perform troubleshooting for the electronically controlled brake system. |
| LTA Malfunction Visit Your Dealer | X2003 | Brake Control System Malfunction | The forward recognition camera received an electronically controlled brake system malfunction signal from the skid control ECU (brake booster with master cylinder assembly). | Perform troubleshooting for the electronically controlled brake system. |
| LTA Malfunction Visit Your Dealer | X2004 | Speed Sensor Malfunction | The forward recognition camera received a vehicle speed sensor malfunction signal from the skid control ECU (brake booster with master cylinder assembly). | Perform troubleshooting for the electronically controlled brake system. |
| LTA Malfunction Visit Your Dealer | X2007 | Communication Error from Steering Vibrator System to Front Recognition Camera | Communication malfunction occurred between the forward recognition camera and steering vibration ECU. | Perform troubleshooting for the front camera system. |
| LTA Unavailable | X2008 | Steering Assist Request Invalid | The forward recognition camera received a power steering ECU low voltage malfunction signal from the power steering ECU (rack and pinion power steering gear assembly). | Perform troubleshooting for the power steering system. |
| LTA Malfunction Visit Your Dealer | X2011 | Front Recognition Camera System Software Not Programmed | Forward recognition camera cannot store the vehicle information. | Perform troubleshooting for the front camera system. |
| LTA Malfunction Visit Your Dealer | X2012 | Front Recognition Camera Malfunction | The forward recognition camera detected an internal malfunction. | Perform troubleshooting for the front camera system. |
| LTA Malfunction Visit Your Dealer | X2013 | Front Recognition Camera Optical Axis Misalignment Malfunction | The forward recognition camera detected optical axis misalignment. | HINT: Forward recognition camera adjustment can be performed by using either One Time Recognition or Sequential Recognition. One Time Recognition: Click here Sequential Recognition: Click here |
| LTA Malfunction Visit Your Dealer | X2014 | Front Recognition Camera Optical Axis Not Adjusted | Forward recognition camera optical axis adjustment has not been performed. | If this Vehicle Control History code is output, perform forward recognition camera optical axis adjustment, clear the Vehicle Control History and then check that this code is not stored again. HINT: Forward recognition camera adjustment can be performed by using either One Time Recognition or Sequential Recognition. One Time Recognition: Click here Sequential Recognition: Click here |
| No Message*1 (LTA indicator light (yellow) illuminates) | X2015 | Front Recognition Camera Dirt | System operation was temporarily suspended due to forward recognition camera not being able to detect objects. | Perform troubleshooting for the front camera system. |
| No Message*1 (LTA indicator light (yellow) illuminates) | X2016 | Front Recognition Camera Outside Guaranteed Operating Temperature | System operation was temporarily suspended due to the forward recognition camera being excessively hot or cold. | Perform troubleshooting for the front camera system. |
| LTA Unavailable | X2017 | Front Recognition Camera Outside Guaranteed Operating Voltage | System operation was temporarily suspended due to forward recognition camera power source voltage being excessively high or low. | Perform troubleshooting for the front camera system. |
| LTA Malfunction Visit Your Dealer | X201D | Front Recognition Camera System Software Malfunction | The forward recognition camera detected specification information malfunction. | Perform troubleshooting for the front camera system. |
| No Message*1 (LTA indicator light (yellow) illuminates) | X201F | Front Recognition Camera Temporary Unavailable (Front Recognition Camera Recognition Stop) | The forward recognition camera operation was suspended. | Perform troubleshooting for the front camera system. |
| LTA Malfunction Visit Your Dealer | X2020 | Front Radar Sensor Destination Malfunction | The forward recognition camera received destination information malfunction signal from the millimeter wave radar sensor assembly. | Perform troubleshooting for the front radar sensor system. |
| LTA Malfunction Visit Your Dealer | X2021 | Front Radar Sensor Malfunction | The forward recognition camera received malfunction signal from the millimeter wave radar sensor assembly. | Perform troubleshooting for the front radar sensor system. |
| LTA Malfunction Visit Your Dealer | X2022 | Front Radar Sensor Optical Axis Misalignment Malfunction | The forward recognition camera received beam axis misalignment malfunction signal from the millimeter wave radar sensor assembly. | Perform millimeter wave radar sensor assembly beam axis adjustment. |
| LTA Malfunction Visit Your Dealer | X2023 | Front Radar Sensor Optical Axis Not Adjusted | The forward recognition camera received beam axis not adjusted signal from the millimeter wave radar sensor assembly. | If this Vehicle Control History code is output, perform millimeter wave radar sensor assembly beam axis adjustment, clear the Vehicle Control History and then check that this code is not stored again. |
| LTA Unavailable | X2026 | Front Radar Sensor Dirt | The forward recognition camera received millimeter wave radar sensor assembly dirty signal from the millimeter wave radar sensor assembly. | Perform troubleshooting for the front radar sensor system. |
| LTA Unavailable | X2027 | Front Radar Sensor Outside Guaranteed Operating Temperature | The forward recognition camera received temperature malfunction signal from the millimeter wave radar sensor assembly. | Perform troubleshooting for the front radar sensor system. |
| LTA Unavailable | X2028 | Front Radar Sensor Outside Guaranteed Operating Voltage | The forward recognition camera received voltage malfunction signal from the millimeter wave radar sensor assembly. | Perform troubleshooting for the front radar sensor system. |
| LTA Malfunction Visit Your Dealer | X204A | Acceleration Sensor Malfunction | The forward recognition camera received an acceleration sensor malfunction signal from the skid control ECU (brake booster with master cylinder assembly). | Perform troubleshooting for the electronically controlled brake system. |
| LTA Malfunction Visit Your Dealer | X2073 | Communication Error from Lane Control Module to Power Steering Control System | Communication malfunction occurred between the forward recognition camera and power steering ECU (rack and pinion power steering gear assembly). | Perform troubleshooting for the power steering system. |
| LTA Malfunction Visit Your Dealer | X2081 | Power Steering Control System for Steering Assist Invalid | The forward recognition camera received a power steering system steering assist unavailable signal from the power steering ECU (rack and pinion power steering gear assembly). | Perform troubleshooting for the power steering system. |
| LTA Malfunction Visit Your Dealer | X2082 | Power Steering Control System for Steering Assist Steering Angle Malfunction | The forward recognition camera received a power steering system steering assist angle malfunction signal from the power steering ECU (rack and pinion power steering gear assembly). | Perform troubleshooting for the power steering system. |
| LTA Malfunction Visit Your Dealer | X2084 | Meter Speed Tolerance Malfunction | The forward recognition camera received a vehicle speed tolerance malfunction signal from the combination meter assembly. | Perform troubleshooting for the meter / gauge system. |
CLEAR VEHICLE CONTROL HISTORY (LANE CONTROL SYSTEM)
NOTICE:
By performing this procedure, all stored Vehicle Control History will be cleared.
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / Lane Control / Utility / Vehicle Control History (RoB)
Chassis > Lane Control > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
(e) According to the display on the Techstream, clear the Vehicle Control History (RoB).
VEHICLE CONTROL HISTORY (SRS AIRBAG SYSTEM)
(a) Part of the control history can be confirmed using the Vehicle Control History.
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Steering Vibrator Component Internal Failure (C1A7496)
DESCRIPTION If the forward recognition camera receives a steering vibration ECU malfunction signal, DTC C1A7496 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1A7
Lost Communication with Multi-axis Acceleration Sensor Module Missing Message (U012587,U012687,U012987,U013187,U015587,U029387)
DESCRIPTION When a communication malfunction is detected between the forward recognition camera and an ECU or sensor, a DTC is stored. DTC No. Detection Item DTC Detection Condition Trouble A
Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message (U023587)
DESCRIPTION The forward recognition camera and millimeter wave radar sensor assembly communicate via CAN communication. If there is an error in the communication with the millimeter wave radar sensor
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Basic Inspection
CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following procedure, the location of the problem ca
Abnormal Power Supply Voltage in Yaw Rate and/or Deceleration Sensor (C1381)
DESCRIPTION The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2). If a power source malfunction signal from the yaw rate and acceleration sensor (airbag ECU assembly) is detected by the skid control ECU (brake booster w
