DTC U1A4B:54 [REAR VEHICLE MONITORING SYSTEM]SM2446019
DTC U1A4B:54 [REAR VEHICLE MONITORING SYSTEM]

id0902z2668600

DESCRIPTION

Radar aiming is not performed or radar sensor axis is deviated (Rear vehicle monitoring control module (LH))
DETECTION CONDITION
• Rear vehicle monitoring radar aiming (LH) is out of range for 1 s or more.
POSSIBLE CAUSE
• Rear vehicle monitoring control module (LH) radar aiming is not performed
• Rear vehicle monitoring control module (LH) radar sensor axis is deviated
• Rear vehicle monitoring control module (LH) malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
PERFORM REAR VEHICLE MONITORING CONTROL MODULE (LH) RADAR AIMING
• Perform the rear vehicle monitoring radar aiming (LH) using the M-MDS. (See REAR VEHICLE MONITORING RADAR AIMING.)
• Clear the DTC from the rear vehicle monitoring control module using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].)
• Verify the rear vehicle monitoring system DTC using the M-MDS. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].)
• Is the same DTC present?
Yes
Perform the rear vehicle monitoring radar aiming (LH) again using the M-MDS, then go to the next step.
(See REAR VEHICLE MONITORING RADAR AIMING.)
No
Go to Step 3.
2
VERIFY TROUBLESHOOTING COMPLETED
• Clear the DTC from the rear vehicle monitoring control module using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].)
• Verify the rear vehicle monitoring system DTC using the M-MDS. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].)
• Is the same DTC present?
Yes
Replace the rear vehicle monitoring control module (LH), then go to the next step.
(See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
No
Go to the next step.
3
VERIFY THAT NO OTHER DTCs ARE PRESENT
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [REAR VEHICLE MONITORING SYSTEM].)
No
DTC troubleshooting completed.