vehicle in front and your own vehicle cannot be measured correctly. The dynamic radar cruise control system functions by detecting the
beam reflections from the vehicle directly in front. In the following cases, the system may not be able to detect the vehicle in front and may
not properly maintain the correct vehicle-to-vehicle distance:
- The vehicle in front is a tall trailer.
- There are heavy emissions from a vehicle in front or vehicles in other lanes.
INSPECTION PROCEDURE
NOTICE:
When the millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed
See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Distance Sensor/Adjustments.
PROCEDURE
1. ADJUST MILLIMETER WAVE RADAR SENSOR
(a) Adjust the millimeter wave radar sensor See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist
Systems/Distance Sensor/Adjustments.
NEXT -- Continue to next step.
2. CHECK DTC
(a) Clear the DTCs See: Cruise Control/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Dynamic Radar Cruise
Control System.
(b) Perform the following to make sure that the DTC detection conditions are met.
HINT
If the detection conditions are not met, the malfunction cannot be detected.
(1) Drive the vehicle at a speed of 50 km/h (31 mph) or more.
(2) Turn the cruise control main switch on.
(c) Check for DTCs See: Cruise Control/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Dynamic Radar Cruise
Control System.
Result:
B -- REPLACE MILLIMETER WAVE RADAR SENSOR See: Accessories and Optional Equipment/Collision Avoidance and
Parking Assist Systems/Distance Sensor/Service and Repair/Components
A -- END
Up to 08/2009
CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P1572: Improper Aiming of Radar Sensor Beam Axis
P1572 - Improper Aiming of Radar Sensor Beam Axis
DESCRIPTION
This DTC is output when the scanning angle of the millimeter wave radar sensor is incorrect. This DTC is also output when the millimeter wave
radar sensor beam axis is determined to be in an incorrect position.
INSPECTION PROCEDURE
NOTICE:
When the millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed
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