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))

Detection condition
•  Radar sensor sensitivity in rear vehicle monitoring control module (LH) decreases for 5 s or more.
Fail-safe function
•  Inhibits the rear vehicle monitoring system.
Possible cause
•  Rear bumper dirt or foreign material (reflective object) is adhered.
•  Dirt or foreign material (reflective object) on rear vehicle monitoring control module (LH)
•  Concavity and convexity on the surface of the repaired rear bumper
•  Rear vehicle monitoring control module (LH) 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 material (reflective object)
•  Is the rear bumper normal?
Yes
Go to the next step.
No
Remove dirt or foreign material (reflective object), then go to Step 4.
2
INSPECT AREA AROUND REAR VEHICLE MONITORING CONTROL MODULE (LH)
•  Visually inspect the area around the rear vehicle monitoring control module (LH) for the following:
―  Dirt
―  Adhered foreign material (reflective object)
•  Is the area around the rear vehicle monitoring control module (LH) normal?
Yes
Go to the next step.
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 there a problem with the repair? (Is the paint Mazda genuine?)
Yes
Go to the next step.
No
Replace the rear bumper, then go to the next step.
4
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Clear the DTC for the rear vehicle monitoring control module using the M-MDS.
•  Drive the vehicle at a vehicle speed of 40 km/h {25 mph} or more for 5 s or more.
•  Retrieve the rear vehicle monitoring control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the rear vehicle monitoring control module (LH).
Go to the next step.
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.
No
DTC troubleshooting completed.