DTC C1A67:54 [RADAR UNIT]

id1502a6018000

System malfunction location

Radar unit aiming adjustment not implemented
Detection condition
•  Radar unit aiming adjustment is not performed
Fail-safe
•  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
Possible cause
•  Radar unit aiming adjustment not performed
•  Radar unit which was used on a different vehicle is installed.
Note
•  If the ignition is switched off when an error occurs during the aiming adjustment command execution, a DTC is detected indicating that the aiming adjustment was not performed.
•  If the ignition is switched OFF in the middle of aiming, the radar unit may detect a DTC even if the radar unit power supply voltage is stable.
System wiring diagram
•  Not applicable

Diagnostic Procedure

Step

Inspection

Action
1
PERFORM THE RADAR UNIT AIMING ADJUSTMENT
•  Perform the radar unit aiming adjustment.
•  Was the aiming adjustment completed?
Yes
Go to step 3.
No
If error code is displayedIf the M-MDS screen suddenly closes during aiming
•  Inspect/repair the error cause according to the error code and perform the radar unit aiming adjustment again.
•  Go to Step 3.
•  Go to the next step. (Radar unit power supply circuit and ground malfunction can be considered)
2
INSPECT RADAR UNIT POWER SUPPLY SYSTEM AND GROUND CIRCUIT
•  Inspect the circuits of the radar unit power supply system and the ground.
?  Open circuit, short circuit
?  Poor connection of ground point
•  Are the circuits and ground point normal?
Yes
Perform the aiming adjustment and then go to the next step.
(See RADAR UNIT AIMING.)
No
After repairing the malfunction, perform the aiming adjustment and then go to the next step.
(See RADAR UNIT AIMING.)
3
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Clear radar unit DTCs using the M-MDS.
•  Switch the ignition ON (engine on).
•  Perform the radar unit DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction does not recur, go to the next step.
•  If the malfunction recurs, replace the radar unit.
Go to the next step.
No
Go to the next step.
4
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.