Radar Sensor Module - Long Range Learn

Note

An ADAPTIVE CRUISE TEMPORARILY UNAVAILABLE message may be displayed on the driver information center if this calibration procedure is required. The B233B Forward Range Radar Sensor - Long Range may have become misaligned. After replacing and programming the B233B Forward Range Radar Sensor - Long Range, it is necessary to perform a calibration procedure to align the radar. This is indicated by DTC U3000 56 being set as current. Calibration is performed while driving the vehicle with the scan tool connected. Calibration is initialized using a scan tool and the scan tool must remain connected until calibration is complete. During this time the SERVICE DRIVER ASSIST message will be displayed on the driver information center. Once the procedure is complete, the message will turn off and normal operation will resume. Calibration is not required if the existing B233B Forward Range Radar Sensor - Long Range was only programmed. Calibration needs to be conducted if the B233B Forward Range Radar Sensor - Long Range was replaced or removed and re-secured. If calibration is not successful, it could be due to improper driving environment, radar and bracket assembly bent out of position, or incorrect radar mounting. A typical driving environment is usually sufficient to calibrate the module within 10–30 minutes. Visually inspect for damaged, bent, or broken B233B Forward Range Radar Sensor - Long Range bracket. Brackets out of level more than 2 degrees will not calibrate or self-learn. Discuss with the customer about vehicle history and possible past accident. Replace bracket if damaged. Calibration Procedure

1. Verify no other DTCs, except for DTC U3000 55, are set. ⇒ If other DTCs are set Diagnose any other DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle. ⇓ If no other DTCs are set
2. Prior to driving the vehicle make sure the surface in front of the B233B Forward Range Radar Sensor - Long Range is clean. Also, verify the mounting area is not damaged and allows the B233B Forward Range Radar Sensor - Long Range to face the intended direction.
3. Prepare the scan tool to be mobile for Long Range Radar Calibration driving phase. The scan tool needs to stay connected during the driving phase of the calibration.
4. Engine running.

Note

Once calibration has begun, do not back out of screen or press any other buttons on the scan tool until the calibration is complete.

5. Select Long Range Radar Sensor Module Learn on the scan tool and follow any on-screen instructions. The driver information center will display the SERVICE DRIVER ASSIST message during calibration.
6. Drive the vehicle within the following conditions for 10–30 minutes or until calibration is complete. The SERVICE DRIVER ASSIST message will turn off when calibration is complete. Drive at speeds greater than 56 km/h (35 mph) Minimize tight curves Avoid extreme acceleration or deceleration Follow one or multiple vehicles. Typical vehicle traffic is sufficient, but vehicles 30 – 50  m (100 – 165 ft) away are most effective at decreasing the calibration time Drive in an environment that has stationary objects on the side of the road (street signs, guard rails, mail boxes, fences, etc)
7. Verify proper calibration by observing that the SERVICE DRIVER ASSIST message turns off within 10–30 min of normal driving. ⇒ If the SERVICE DRIVER ASSIST message fails to turn off Refer to If Slow to Calibrate below and repeat the calibration procedure following recommended operating conditions. ⇓ If the SERVICE DRIVER ASSIST message turns off
8. Drive at speeds greater than 40 km/h (25 mph) and verify engagement of adaptive cruise control. ⇒ If adaptive cruise control will not engage Check vehicle for DTCs and correct as required. ⇓ If adaptive cruise control engages
9. All OK. If Slow to Calibrate The ideal calibration condition is driving on a freeway or two lane road with medium traffic. One or more of the following conditions may increase the length of time required to complete the self- calibration procedure: Visually inspect for damaged, bent, or broken Long Range Radar bracket. Brackets out of level more than 2 degrees will not calibrate or self-learn. Discuss with the customer about vehicle history and possible past accident. Replace bracket if damaged. Heavy traffic – following too close behind vehicles for long periods (more than 40 min) Stop and go or very slow traffic Mountain roads Constant sharp curves in roadway No traffic – if no traffic is available, may need to add vehicle ahead to support calibration Limited or no stationary structures on side of the road — need structures such as street signs, guard rails, mail boxes, parked cars, etc. Driving in tunnels