DTC U2300:54/U2300:55/U2300:56 [RADAR UNIT]

id1502a6100100

Description
•  U2300:54
?  Configuration error (data not received)
•  U2300:55
?  Configuration error (no configuration)
•  U2300:56
?  Configuration error (Ineffective/non-interchangeable data read)
Detection condition
•  The radar unit detects configuration setting failure.
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
Note
•  If the radar unit is replaced with a new one, the configuration is re-performed within 6 s after the ignition is switched ON (engine off).
•  After performing the configuration, DTC U2300:55 will be cleared if the ignition is switched ON (engine off) after the ignition is switched off.
•  Instrument cluster configuration is not completed.
•  Module configuration procedure was not completed properly
•  Correct data cannot be received from instrument cluster
•  Instrument cluster malfunction
•  Radar unit malfunction
System wiring diagram
Not applicable

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY INSTRUMENT CLUSTER DTCs
•  Retrieve the instrument cluster DTCs using the M-MDS.
•  Are any DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [INSTRUMENT CLUSTER].)
No
Go to the next step.
2
VERIFY ALL SYSTEM DTCs
•  Clear the DTC for the radar unit using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 6 s or more.
•  Perform a CMDTC self-test using the M-MDS.
•  Are there any modules other than the radar unit displaying the same DTC?
Yes
Using the M-MDS, perform the instrument cluster configuration (using As-Built data) again, then go to the next step.
(See INSTRUMENT CLUSTER CONFIGURATION (USING AS-BUILT DATA).)
No
Go to the next step.
3
VERIFY ALL SYSTEM DTCs AGAIN
•  Clear the DTC for the radar unit using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 6 s or more.
•  Perform a CMDTC self-test using the M-MDS.
•  Are there any modules other than the radar unit displaying the same DTC?
Yes
Replace the instrument cluster, then go to the next step.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No
Go to the next step.
4
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Clear the DTC for the radar unit using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 6 s or more.
•  Retrieve the radar unit DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Replace the radar unit, then go to the next step.
(See RADAR UNIT REMOVAL/INSTALLATION.)
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 [RADAR UNIT].)
No
DTC troubleshooting completed.