EMERGENCY CALL UNIT INSPECTION

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1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)])

2.  Remove the following parts:

(1)  Passenger-side lower panel (See LOWER PANEL REMOVAL/INSTALLATION [(E)].)

3.  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)])

4.  Measure the voltage at each terminal.

•  If the voltage is not as specified in the terminal voltage table, inspect the parts under Inspection item (s) and related wiring harnesses.

―  If the system does not work normally even though the inspection items or related wiring harnesses do not have any malfunction, replace the emergency call unit. (See EMERGENCY CALL UNIT REMOVAL/INSTALLATION.)

Terminal Voltage Table (Reference)

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Terminal	Signal name		Connected to	Measurement conditions			Voltage (V)	Inspection item(s)
1A	IND1_P		Emergency call switch	Under any condition			5.0	•  Emergency call switch •  Related wiring harness
1B	SW1_P		Emergency call switch	Under any condition			5.0	•  Emergency call switch •  Related wiring harness
1C	IND2_P		Emergency call switch	Under any condition			5.0	•  Emergency call switch •  Related wiring harness
1D	SW_IND_N		Emergency call switch	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1E	MIC_PWR		Microphone	Under any condition			7.2—8.8	•  Microphone •  Related wiring harness
1F	—		—	—			—	—
1G	MIC_IN_P		Microphone	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1H	—		—	—			—	—
1I	MIC_IN_N		Microphone	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1J	MIC_GND		Microphone	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1K	MIC_OUT_P		Connectivity master unit	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1L	PRE_OUT_N		Microphone	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1M	MIC_OUT_N		Microphone	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1N	PRE_OUT_P		Microphone	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1O	GND1		Body ground	Under any condition			Approx. 0	•  GND point •  Body ground •  Related wiring harness
1P	—		—	—			—	—
1Q	HS CAN_H		CAN system related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1R	GND3		Body ground	Under any condition			Approx. 0	•  GND point •  Body ground •  Related wiring harness
1S	HS CAN_L		CAN system related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1T	GND4		Body ground	Under any condition			Approx. 0	•  GND point •  Body ground •  Related wiring harness
1U	GND2		Body ground	Under any condition			Approx. 0	•  GND point •  Body ground •  Related wiring harness
1V	—		—	—			—	—
1W	MIC_MODE_UART_CMU		Connectivity master unit	Under any condition			7.2—8.8	•  Connectivity master unit •  Related wiring harness
1X	MOST_WAKEUP_IN		Connectivity master unit	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1Y	MIC_MODE_UART_CMU		Microphone	Under any condition			7.2—8.8	•  Microphone •  Related wiring harness
1Z	MOST_WAKEUP_IN		Audio amplifier	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1AA	ENS2_IN		Electrical supply unit (ESU)	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1AB	—		—	—			—	—
1AC	ENS2_OUT		Electrical supply unit (ESU)	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1AD	—		—	—			—	—
1AE	IG1		F48 7.5A fuse	Switch the ignition ON (engine on or off)			B+	•  F48 7.5A fuse •  Related wiring harness
				Switch the ignition OFF (LOCK)			1.0 or less
1AF	+B		F46 15 A fuse	Under any condition			B+	•  F46 15 A fuse •  Battery •  Related wiring harness
2A	TEL_SIG1		TEL antenna	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
2B	GNSS_SIG1		TEL antenna	Because this terminal is for communication, determination using terminal voltage inspection is not possible.