DTC U3000:97 [REAR VEHICLE MONITORING SYSTEM]

id0902z2885200

DESCRIPTION

Radar sensor sensitivity temporarily decreases depending on various external and environmental factors (Rear vehicle monitoring control module (LH)/(RH))

DETECTION CONDITION

•  Radar sensor sensitivity in rear vehicle monitoring control module (LH)/(RH) temporarily decreases.

POSSIBLE CAUSE

•  Dirt or foreign material (reflective object) on the surface of rear bumper

•  Dirt or foreign material (reflective object) on rear vehicle monitoring control module (LH)/(RH)

•  Concavity and convexity on the surface of the repaired rear bumper

•  Rear vehicle monitoring control module (LH) malfunction

•  Rear vehicle monitoring control module (RH) malfunction

DESCRIPTION	Radar sensor sensitivity temporarily decreases depending on various external and environmental factors (Rear vehicle monitoring control module (LH)/(RH))
DETECTION CONDITION	• Radar sensor sensitivity in rear vehicle monitoring control module (LH)/(RH) temporarily decreases.
POSSIBLE CAUSE	• Dirt or foreign material (reflective object) on the surface of rear bumper • Dirt or foreign material (reflective object) on rear vehicle monitoring control module (LH)/(RH) • Concavity and convexity on the surface of the repaired rear bumper • Rear vehicle monitoring control module (LH) malfunction • Rear vehicle monitoring control module (RH) malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	VISUALLY INSPECT REAR BUMPER SURFACE • Visually inspect the rear bumper surface. • Is any foreign material (reflective object) adhered to the rear bumper?	Yes	Remove dirt or foreign material (reflective object), then go to Step 4.
1		No	Go to the next step.
2	VISUALLY INSPECT AREA AROUND REAR VEHICLE MONITORING CONTROL MODULE (LH) AND (RH) • Visually inspect the area around the rear vehicle monitoring control module (LH) and (RH). • Is any foreign material (reflective object) adhered to the area around the rear vehicle monitoring control module (LH) and/or (RH)?	Yes	Remove dirt or foreign material (reflective object), then go to Step 4.
2		No	Go to the next step.
3	VERIFY REAR BUMPER REPAIR HISTORY • Verify if the rear bumper had been repaired or repainted before. • Was non-Mazda genuine paint used?	Yes	Replace the rear bumper, then go to the next step. (See REAR BUMPER REMOVAL/INSTALLATION.)
3		No	Go to the next step.
4	PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS REAR VEHICLE MONITORING CONTROL MODULE (LH) • Clear the DTC from rear vehicle monitoring control module using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].) • Drive the vehicle at 40 km/h {25 mph} or more. • Perform the rear vehicle monitoring control module DTC inspection using the M-MDS. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the rear vehicle monitoring control module (LH). (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
4		No	Go to Step 6.
5	VERIFY TROUBLESHOOTING COMPLETED • Clear the DTC from rear vehicle monitoring control module using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].) • Drive the vehicle at 40 km/h {25 mph} or more. • Perform the rear vehicle monitoring control module DTC inspection using the M-MDS. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].) • Is the same DTC present?	Yes	Replace the rear vehicle monitoring control module (RH), then go to the next step. (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
5		No	Go to the next step.
6	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].)
6		No	DTC troubleshooting completed.