DTC B152E:15 [DASH-ELECTRICAL SUPPLY UNIT]

id0702k8708500

Outline

System malfunction location	Temperature sensor of air for PTC circuit malfunction
Detection condition	•  The dash-electrical supply unit detects an open circuit in the temperature sensor of air for PTC.
Fail-safe	•  Fixes the humidity sensor temperature input value at 25 °C {77 °F} and performs control.
Possible cause	•  Temperature sensor of air for PTC connector or terminal malfunction •  Dash-electrical supply unit connector or terminal malfunction •  Open circuit in temperature sensor of air for PTC signal circuit •  Open circuit in temperature sensor of air for PTC ground circuit •  Temperature sensor of air for PTC malfunction •  Dash-electrical supply unit malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	INSPECT TEMPERATURE SENSOR OF AIR FOR PTC 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.
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 TEMPERATURE SENSOR OF AIR FOR PTC SIGNAL CIRCUIT FOR OPEN CIRCUIT •  Inspect the applicable circuit for an 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.
4	INSPECT TEMPERATURE SENSOR OF AIR FOR PTC GROUND CIRCUIT FOR OPEN CIRCUIT •  Inspect the applicable circuit for an 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.
5	INSPECT TEMPERATURE SENSOR OF AIR FOR PTC FOR MALFUNCTION •  Inspect the applicable part. (See TEMPERATURE SENSOR OF AIR FOR PTC INSPECTION [FULL-AUTO AIR CONDITIONER].) •  Is the part 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 dash-electrical supply unit. (See DTC INSPECTION.) •  Is the same DTC displayed?	Yes	Refer to the CAN (controller area network) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction is not resolved, replace the dash-electrical supply unit, then go to the next step. (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs ARE DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.