DTC U3000:97 [BLIND SPOT MONITORING (BSM)]

id0902i3393600

System malfunction location

Radar performance malfunction

Detection condition

•  BSM control module internal radar sensor sensitivity is decreased.

•  BSM control module internal radar sensor axis is deviated.

Fail-safe

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Possible cause

•  Rear bumper malfunction (Dirt or foreign material (reflective object) is adhered.)

•  BSM control module malfunction (Dirt or foreign material (reflective object) is adhered.)

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

•  BSM control module malfunction

System wiring diagram

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System malfunction location	Radar performance malfunction
Detection condition	• BSM control module internal radar sensor sensitivity is decreased. • BSM control module internal radar sensor axis is deviated.
Fail-safe	—
Possible cause	• Rear bumper malfunction (Dirt or foreign material (reflective object) is adhered.) • BSM control module malfunction (Dirt or foreign material (reflective object) is adhered.) • Concavity and convexity on the surface of the repaired rear bumper • BSM control module malfunction
System wiring diagram	—

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT REAR BUMPER SURFACE • Visually inspect the rear bumper surface for the following: ― Dirt ― Adhered foreign material (reflective object) • Is the rear bumper normal?	Yes	Go to the next step.
1		No	Remove dirt or foreign material (reflective object), then go to Step 4.
2	INSPECT AREA AROUND BSM CONTROL MODULE • Visually inspect the area around the BSM control module for the following: ― Dirt ― Adhered foreign material (reflective object) • Is the area around the BSM control module normal?	Yes	Go to the next step.
2		No	Remove dirt or foreign material (reflective object), then go to Step 4.
3	VERIFY REAR BUMPER REPAIR HISTORY • Verify if the rear bumper had been repaired or repainted before. • Is the paint Mazda genuine?	Yes	Go to the next step.
3		No	Replace the rear bumper, then go to the next step. (See REAR BUMPER REMOVAL/INSTALLATION.)
4	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Clear BSM control module DTCs using the M-MDS. (See CLEARING DTC [BLIND SPOT MONITORING (BSM)].) • Perform the DTC inspection for the BSM control module using the M-MDS. (See DTC INSPECTION [BLIND SPOT MONITORING (BSM)].) • Is DTC U3000:97 displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the BSM control module, then go to the next step. (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.)
4		No	Go to the next step.
5	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [BLIND SPOT MONITORING (BSM)].)
5		No	DTC troubleshooting completed.