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DTC U300E:13 [DASH-ELECTRICAL SUPPLY UNIT (E)]

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Outline

System malfunction location	Ignition switch
Detection condition	•  The dash-electrical supply unit detects that the IG1 power supply condition determined from the dash-electrical supply unit power supply circuit (IG1) is off even though the IG1 power supply condition received via CAN communication from body control module (BCM) is on.
Fail-safe	•  Not applicable
Possible cause	•  IG1 relay No.2 malfunction •  Dash-electrical supply unit connector or terminals malfunction •  F47 15 A fuse malfunction •  Short to ground in dash-electrical supply unit power supply circuit (IG1) •  Open circuit in dash-electrical supply unit power supply circuit (IG1) •  Dash-electrical supply unit malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	INSPECT IG1 RELAY No.2 FOR MALFUNCTION •  Inspect the applicable part. (See RELAY INSPECTION.) •  Is the part normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See RELAY LOCATION [(E)].)
2	INSPECT DASH-ELECTRICAL SUPPLY UNIT CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT F47 15 A FUSE •  Remove the F47 15 A fuse. •  Inspect the F47 15 A fuse. •  Is the fuse normal?	Yes	Reinstall the F47 15 A fuse, then go to the next step.
		No	Replace the F47 15 A fuse and perform the repair completion verification.
4	INSPECT DASH-ELECTRICAL SUPPLY UNIT POWER SUPPLY CIRCUIT (IG1) FOR SHORT TO GROUND •  Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	INSPECT DASH-ELECTRICAL SUPPLY UNIT POWER SUPPLY CIRCUIT (IG1) FOR OPEN CIRCUIT •  Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  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 DTCs DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.