DASH-ELECTRICAL SUPPLY UNIT INSPECTION [FULL-AUTO AIR CONDITIONER]

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1.  Disconnect the negative lead-acid battery terminal and wait for 1 min or more. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2.  Remove the following parts:

(1)  Glove compartment(See GLOVE COMPARTMENT REMOVAL/INSTALLATION [(E)].)

(2)  Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION.)

(3)  Passenger-side front scuff plate (See SCUFF PLATE REMOVAL/INSTALLATION.)

(4)  Passenger-side front side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)

(5)  Passenger-side decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION.)

(6)  Passenger-side lower panel(See PASSENGER-SIDE LOWER PANEL REMOVAL [(E)].)(See PASSENGER-SIDE LOWER PANEL INSTALLATION [(E)].)

3.  Connect the negative lead-acid battery terminal.

4.  Switch the main power ON (READY off or on).

5.  Connect the negative (-) lead of the tester to body ground.

6.  Insert the positive (+) lead of the tester into each dash-electrical supply unit terminal and measure the voltage according to the terminal voltage table.

•  If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under “Inspection item(s)” and related wiring harnesses.

―  If the system does not work properly even though the inspection items or related wiring harnesses do not have any malfunction, replace the dash-electrical supply unit. (See DASH-ELECTRICAL SUPPLY UNIT INSPECTION [FULL-AUTO AIR CONDITIONER].)

Terminal Voltage Table (Reference)

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Terminal	Signal name	Connected to	Measurement condition		Voltage (V)	Inspection item (s)
1A	Illumi_Foot*1	—	—		—	—
1B	BL_CONT	Blower motor	Switch the main power ON (READY off or on)		1.0 or less	•  Related wiring harness •  Blower motor
			Switch the main power OFF		B+
1C	—	—	—		—	—
1D	GND	Body ground	Under any condition		Approx. 0	•  GND point •  Related wiring harness
1E	IG	F47 15 A fuse	Switch the main power ON (READY off or on)		B+	•  Related wiring harness •  F47 15 A fuse
			Switch the main power OFF		1.0 or less
1F	—	—	—		—	—
1G	BATT	F16 15 A fuse	Under any condition		B+	•  Related wiring harness •  F16 15 A fuse
1H	—	—	—		—	—
1I	CAN_H_PBLC2	CAN related module	Because this terminal is for communication, integrity determination by terminal voltage is not possible.			•  Related wiring harness
1J	CAN_L_PBLC2	CAN related module	Because this terminal is for communication, integrity determination by terminal voltage is not possible.			•  Related wiring harness
1K	CAN_H_PBLC1	CAN related module	Because this terminal is for communication, integrity determination by terminal voltage is not possible.			•  Related wiring harness
1L	CAN_L_PBLC1	CAN related module	Because this terminal is for communication, integrity determination by terminal voltage is not possible.			•  Related wiring harness
2A	—	—	—		—	—
2B	LIN1	•  Air mix actuator •  Airflow mode actuator •  Air intake actuator •  PTC Heater *3	Because this terminal is for communication, integrity determination by terminal voltage is not possible.			•  Related wiring harness
2C	PTC_TEMP_SSR	Temperature sensor of air for PTC	—		Voltage cannot be measured.	•  Temperature sensor of air for PTC •  Related wiring harness
2D	DSCG_TEMP_SSR	Temperature sensor of refrigerant line for electric compressor outlet	—		Voltage cannot be measured.	•  Temperature sensor of refrigerant line for electric compressor outlet •  Related wiring harness
2E	EVA_TEMP_SSR	Evaporator temperature sensor	—		Voltage cannot be measured.	•  Evaporator temperature sensor •  Related wiring harness
2F	—	—	—		—	—
2G	Sensor GND	Evaporator temperature sensor	Under any condition		1.0 or less	•  Related wiring harness
2H	GND_HVAC_1	•  Air mix actuator •  Airflow mode actuator •  Air intake actuator	Under any condition		1.0 or less	•  Related wiring harness
2I	—	—	—		—	—
2J	IG_HVAC_1	•  Air mix actuator •  Airflow mode actuator •  Air intake actuator •  PTC heater *3	Switch the main power ON (READY off or on)		B+	•  Related wiring harness
			Switch the main power OFF		B+ / 1.0 or less *5
3A	CAN_H_PBLC3	CAN related module	Because this terminal is for communication, integrity determination by terminal voltage is not possible.			•  Related wiring harness
3B	CAN_L_PBLC3	CAN related module	Because this terminal is for communication, integrity determination by terminal voltage is not possible.			•  Related wiring harness
3C	—	—	—		—	—
3D	—	—	—		—	—
3E	—	—	—		—	—
3F	—	—	—		—	—
3G	Mode_SW	Drive selection switch	Switch the main power ON (READY off)	Pressed to SPORT side (forward)	1.0 or less	•  Related wiring harness
				Pressed to OFF side (backward)	8.0
				Not pressed	9.0
3H	Buckle switch input	Driver-side buckle switch	Switch the main power ON (READY off)	Driver-side front buckle fastened	B+	•  Related wiring harness •  Driver-side front buckle
				Driver-side front buckle unfastened	1.0 or less
3I	IG_HVAC_2	Passenger compartment temperature sensor	Switch the main power ON (READY off or on)		B+	•  Related wiring harness
			Switch the main power OFF		1.0 or less*5
3J	LIN2	Seat warmer control unit *2 / Position memory control module *3 / Heated steering wheel control unit *4	Because this terminal is for communication, integrity determination by terminal voltage is not possible.			•  Related wiring harness