Mazdamanuals.com

DTC U2300:54 [DASH-ELECTRICAL SUPPLY UNIT]

Home  id0702k8009800

Outline

System malfunction location	Configuration data
Detection condition	•  The dash-electrical supply unit cannot receive the body control module (BCM) configuration data.
Fail-safe	•  Not applicable
Possible cause	Note •  To correctly write the configuration data sent from the body control module (BCM) to dash-electrical supply unit, 30 s or more have to be elapsed since the ignition is switched ON (engine off or on). •  DTCs are stored in the body control module (BCM). ―  Body control module (BCM) configuration not implemented ―  Body control module (BCM) internal memory malfunction •  Body control module (BCM) configuration data error •  Configuration procedure was not completed properly. •  Dash-electrical supply unit removed from other vehicle is being used •  Dash-electrical supply unit malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step	Inspection	Results	Action
1	INSPECT BODY CONTROL MODULE (BCM) FOR MALFUNCTION •  Perform the DTC inspection for body control module (BCM). (See DTC INSPECTION.) •  Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [BODY CONTROL MODULE (BCM) (E)].)
		No	Go to the next step.
2	VERIFY REPLACEMENT RECORD OF DASH-ELECTRICAL SUPPLY UNIT •  Before performing the troubleshooting diagnostic procedure this time, verify if the dash-electrical supply unit was replaced. •  Was the dash-electrical supply unit replaced?	Yes	After re-implementing the required servicing when replacing the dash-electrical supply unit in accordance with dash-electrical supply unit removal/installation, perform the repair completion verification. (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].) (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)
		No	Go to the next step.
3	RESET CONFIGURATION DATA FOR BODY CONTROL MODULE (BCM) •  Perform the body control module (BCM) configuration using the M-MDS. (See CONFIGURATION.) •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Switch the ignition ON (engine off or on) and wait for 30 s or more. •  Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Perform the body control module (BCM) configuration again using the M-MDS and perform the repair completion verification.
		No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Switch the ignition ON (engine off or on) and wait for 30 s or more. •  Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step. (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].) (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)
		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.