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

id0902i3393600

Description

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 function

•  Blind spot monitoring (BSM) system is stopped.

Possible cause

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

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

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

•  BSM control module malfunction

System wiring diagram

Not applicable

Description	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 function	• Blind spot monitoring (BSM) system is stopped.
Possible cause	• Rear bumper malfunction (Dirt or foreign matter (reflective object) is adhered.) • BSM control module malfunction (Dirt or foreign matter (reflective object) is adhered.) • Concavity and convexity on the surface of the repaired rear bumper • BSM control module malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT REAR BUMPER SURFACE • Visually inspect the rear bumper surface for the following: ― Dirt ― Adhered foreign matter (reflective object) • Is the rear bumper normal?	Yes	Go to the next step.
1		No	Remove dirt or foreign matter (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 matter (reflective object) • Is the area around the BSM control module normal?	Yes	Go to the next step.
2		No	Remove dirt or foreign matter (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 the DTC for the BSM control module using the M-MDS. (See CLEARING DTC [BLIND SPOT MONITORING (BSM)].) • Retrieve the BSM control module DTCs using the M-MDS. (See DTC INSPECTION [BLIND SPOT MONITORING (BSM)].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the BSM control module. (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
4		No	Go to the next step.
5	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [BLIND SPOT MONITORING (BSM)].)
5		No	DTC troubleshooting completed.