w/ Adaptive laser cruise control system
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
DTC CHART (W/ ADAPTIVE LASER CRUISE CONTROL SYSTEM)
| DTC No. | Circuit Inspection | Trouble Area | ||
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| DTC P0500/21: VEHICLE SPEED SENSOR "A"; DTC P0503/23: VEHICLE SPEED SENSOR DTC P0503/23: VEHICLE SPEED SENSOR "A" Intermittent/Erratic/High | Vehicle speed sensor circuit |
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| DTC P0571/52: BRAKE SWITCH "A" Circuit | Stop light switch circuit |
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| DTC P0607/54: Control Module Performance | Input signal circuit |
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| DTC P1615/61: Communication Error From Distance Control ECU To ECM | Communication error from distance control ECU to ECM |
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| DTC P1616/62: Communication Error From ECM To Distance Control ECU | Communication error from ECM to distance control ECU |
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| DTC P1617/63: Distance Control ECU Malfunction | Distance control ECU malfunction |
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| DTC U0122/64: Communication Error From Skid Control ECU to ECM | Communication error from skid control ECU to ECM |
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| DTC U0100/65: Communication Error From ECM to Skid Control LEGU | Communication error from ECM to skid control ECU |
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| DTC P1575/66: Warning Buzzer Malfunction | Warning buzzer malfunction |
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| (1)DTC P1576/67: Steering Angle Sensor Malfunction | Steering angle sensor malfunction |
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| (1)DTC P1577/68: Yaw Rate Sensor Malfunction | Yaw rate sensor malfunction |
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| (1)DTC P1578/69: Brake System Malfunction | Brake system malfunction |
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| DTC U9235/71: Communication Error 1 From Laser Radar Sensor to Distance Control ECU | Communication error from laser radar sensor to distance control ECU |
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| DTC U0235/72: Communication Error 2 From Distance Control ECU to Laser Radar Sensor | Communication error from distance control ECU to laser radar sensor |
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| DTC P1570/73: Laser Radar Sensor Malfunction | laser radar sensor malfunction |
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| DTC P1572/75: Improper Aiming Of Laser Radar Sensor Beam Axis | Improper aiming of laser radar sensor beam axis |
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For P1576 (67) and P1577 (68) especially, if no DTC is detected in the skid control ECU, the DTC may be caused by the driving condition with adaptive radar cruise control, such as a case of driving on a road with consecutive curves immediately after starting the vehicle.
Provide your customers with the information that the radar cruise control will not properly function if he/she drives the vehicle on a road with consecutive curves and does not drive straight immediately after start.
Because the steering sensor or yaw rate sensor itself is not regarded as faulty in this case, its replacement is not necessary.
Clear the DTC and recheck the operation on an ordinary road (radar cruise control).