DTC C1A67:92 [RADAR UNIT]
id1502a6018300
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Description |
Radar unit sensitivity lowered |
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Detection condition
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• Radar unit sensitivity decreases.
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Fail-safe
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• Inhibits the mazda radar cruise control (MRCC) system control
• Inhibits the smart brake support (SBS) system control
• Inhibits the distance recognition support system (DRSS) control
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Possible cause
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• Dirt, snow, or thick moisture film (such as condensation) is adhering to surface of radar unit or radiator grille ornament.
• Reflective object is adhering to radar unit surface and the area around it.
• Radar unit malfunction
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System wiring diagram
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Not applicable
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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VERIFY AREA AROUND RADIATOR GRILLE ORNAMENT
• Visually inspect the area around the radiator grille ornament for the following:
• Is there any dirt, foreign matter (reflective object) or damage, or are there any scratches around the radiator grille ornament?
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Yes
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Return the surfaces of the radiator grille ornament to their normal condition, then go to Step 4.
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No
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Go to the next step.
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2
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VERIFY AREA AROUND RADAR UNIT
• Remove front bumper.
• Visually inspect the area around the radar unit for the following:
• Is there any dirt, foreign matter (reflective object) or damage, or are there any scratches around the radar unit?
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Yes
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Return the radar unit to their normal condition, then go to Step 4.
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No
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Go to the next step.
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3
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VERIFY CENTER DISPLAY
• Verify if "The SBS/MRCC Radar (Sensor) is soiled. Clean the entire surface of the Radar (Sensor)." or “The SBS/MRCC/DRSS Radar (Sensor) is soiled. Clean the entire surface of the Radar (Sensor).” is displayed in the center display.
• Is "The SBS/MRCC Radar (Sensor) is soiled. Clean the entire surface of the Radar (Sensor)." or “The SBS/MRCC/DRSS Radar (Sensor) is soiled. Clean the entire surface of the Radar (Sensor).” displayed?
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Yes
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Clean the radar unit, then go to the next step.
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No
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Go to the next step.
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4
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Clear the DTC for the radar unit using the M-MDS.
(See CLEARING DTC [RADAR UNIT].)
• Drive the vehicle at 40 km/h {25 mph} or more for 3 min or more.
• Retrieve the radar unit DTCs using the M-MDS.
(See DTC INSPECTION [RADAR UNIT].)
• Is the same Pending DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the radar unit.
Go to the next step.
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No
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Go to the next step.
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5
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [RADAR UNIT].)
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No
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DTC troubleshooting completed.
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