DTC U3000:09 [ELECTRICAL SUPPLY UNIT (ESU)]

id0902ff080400

Description

Electrical supply unit (ESU) internal malfunction

Detection condition

• Malfunction in the electrical supply unit (ESU) internal circuit (self-protection circuit) is detected.

Fail-safe

Not applicable

Possible cause

• Electrical supply unit (ESU) malfunction

System wiring diagram

Not applicable

Description	Electrical supply unit (ESU) internal malfunction
Detection condition	• Malfunction in the electrical supply unit (ESU) internal circuit (self-protection circuit) is detected.
Fail-safe	Not applicable
Possible cause	• Electrical supply unit (ESU) malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY IF MALFUNCTIONING LOCATION IS ELECTRICAL SUPPLY UNIT (ESU) DEPENDING ON REPEATABILITY • Clear the DTC for the electrical supply unit (ESU) using the M-MDS. (See CLEARING DTC [ELECTRICAL SUPPLY UNIT (ESU)].) • Retrieve the electrical supply unit (ESU) DTCs using the M-MDS. (See DTC INSPECTION [ELECTRICAL SUPPLY UNIT (ESU)].) • Is the same DTC displayed?	Yes	Replace the electrical supply unit (ESU), then go to the next step. (See ELECTRICAL SUPPLY UNIT (ESU) REMOVAL/INSTALLATION.)
1		No	Go to the next step.
2	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 [ELECTRICAL SUPPLY UNIT (ESU)].)
2		No	DTC troubleshooting completed.