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Home >> Mazda >> 2016 >> 3 Sport, 4D Hatchback, Standard Trans >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> On-Board Diagnostic [Vehicle Control Module - V/C-Module] >> DTC C1A67-78: Radar Sensor Axis Is Deviated >> Diagnostic Procedure
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Diagnostic Procedure

Step Inspection Action
1 VERIFY RADIATOR GRILLE 
  • Is the radiator on a vehicle with a radar sensor installed?
 Yes Go to the next step.
No Replace the radiator grille on the vehicle with a radar sensor, then go to Step 9.
2 VERIFY AREA AROUND RADIATOR GRILLE ORNAMENT 
  • Visually inspect the surface of the radiator grille ornament.
  • Under the following conditions?
    • Dirt is adhering to radiator grille ornament
    • Foreign material (reflective object) is adhering to radiator grille ornament
    • Radiator grille ornament is scratched or damaged
 Yes Return the surfaces of the radiator grille ornament to their normal condition, then go to Step 9.
No Go to the next step.
3 VERIFY AREA AROUND RADAR SENSOR 
  • Remove front bumper.

    (Refer to FRONT BUMPER REMOVAL/INSTALLATION .)

  • Visually inspect the surface of the radar sensor.
  • Under the following conditions?
    • Dirt is adhering to radar sensor
    • Foreign material (reflective object) is adhering to radar sensor
    • Radar sensor is scratched or damaged
 Yes Return the radar sensor to their normal condition, then go to Step 9.
No Go to the next step.
4 VERIFY CENTER DISPLAY INDICATION 
  • Is the message indicating "FOW/MRCC Radar Malfunction" displayed in the center display?
 Yes Switch the ignition off, leave it for 30 min to cool down the radar sensor, switch the ignition ON (engine off or on) again, and verify the message indicating "FOW/MRCC Radar Malfunction" in the center display.
"FOW/MRCC Radar Malfunction" is not displayed 
No Go to the next step.
5 VERIFY RADAR SENSOR BRACKET 
  • Verify that there is no bending or damage on the radar sensor bracket.
  • Is there bending or damage on the radar sensor bracket?
 Yes Replace the radar sensor bracket and perform the aiming adjustment.
(Refer to RADAR SENSOR DISASSEMBLY/ASSEMBLY [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM] .)
(Refer to RADAR SENSOR AIMING [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM] .)
Then go to Step 9.
No Go to the next step.
6 PERFORM DTC INSPECTION FOR DSC HU/CM 
 Yes Go to the applicable DTC inspection.
(Refer to ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .)
Then go to Step 9.
No Go to the next step.
7 PERFORM DTC INSPECTION FOR SAS CONTROL MODULE 
 Yes Go to the applicable DTC inspection.
(Refer to DTC TABLE [STANDARD DEPLOYMENT CONTROL SYSTEM] .)
(Refer to DTC TABLE [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .)
Then go to Step 9.
No Go to the next step.
8 PERFORM DTC INSPECTION FOR VEHICLE CONTROL MODULE (V/C-MODULE) 
 Yes Go to the applicable DTC inspection.
(Refer to DTC TABLE [VEHICLE CONTROL MODULE (V/C-MODULE)] .)
Then go to the next step.
No Go to the next step.
9 VERIFY THAT REPAIRS HAVE BEEN COMPLETED 
 Yes Repeat the inspection from Step 1.

Go to the next step.
No Go to the next step.
10 VERIFY THAT NO OTHER DTCs ARE PRESENT 
  • Verify other DTCs displayed.
  • Are any other DTCs output?
 Yes Perform the corresponding DTC inspection.
No DTC troubleshooting completed.
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