PARKING SENSOR CONTROL MODULE INSPECTION

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1.  Remove the glove compartment. (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)

2.  Remove the lower panel. (Passenger-side) (See LOWER PANEL REMOVAL/INSTALLATION.)

3.  Measure the voltage at each terminal is as indicated in the Terminal Voltage Tables.

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

―  If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the parking sensor control module.

Terminal Voltage Table (Reference)

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Terminal	Signal name	Connected to	Measured item	Test condition		Voltage (V)	Inspection item
A	Ultrasonic sensor	Back sensor (left)	Wave profile	(See Generated Pulse (reference))			•  Back sensor (left) •  Related wiring harnesses
B	Terminal for measuring the buzzer terminal voltage (no auxiliary wiring harness to connect to the external devices)		Voltage	Switch the ignition to ON	Parking sensor switch ON and buzzer stopped	B+	Parking sensor control module
					Parking sensor switch ON and buzzer sounding	1.0 or less
C	Ultrasonic sensor	Back sensor (right)	Wave profile	(See Generated Pulse (reference))			•  Back sensor (right) •  Related wiring harnesses
E	Ultrasonic sensor	Corner sensor (left)	Wave profile	(See Generated Pulse (reference))			•  Corner sensor (left) •  Related wiring harnesses
G	Ultrasonic sensor	Corner sensor (right)	Wave profile	(See Generated Pulse (reference))			•  Corner sensor (right) •  Related wiring harnesses
H	GND	Corner/Back sensor	Voltage	Under any condition	Under any condition	1.0 or less	•  Corner sensor (right) •  Corner sensor (left) •  Back sensor (right) •  Back sensor (left) •  Related wiring harnesses
Q	Ultrasonic sensor ground	Body ground	Voltage	Under any condition	Under any condition	1.0 or less	Related wiring harnesses
U	IG	METER 15 A fuse	Voltage	Switch the ignition to ON		B+	•  METER 15 A fuse •  Related wiring harnesses
				Switch the ignition OFF (LOCK)		1.0 or less
W	R position	Back-up light switch	Voltage	Ignition switch ON and parking sensor switch ON	Shift lever is in R position	6.0 or more	•  Back-up light switch •  BCM •  Related wiring harnesses
					Shift lever is in position other than R	2.0 or less
Y	Vehicle speed	Instrument cluster	Wave profile	Rectangular wave pattern is displayed while driving	Speed signal is input: ON	6.0 or more	•  Instrument cluster •  Related wiring harnesses
					Speed signal is not input: OFF	Open or 5.0 or more

Generated Pulse (reference)

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―  Back sensor (LH): A (+) — body ground (-)

―  Back sensor (RH): C (+) — body ground (-)

―  Corner sensor (LH): E (+) — body ground (-)

―  Corner sensor (RH): G (+) — body ground (-)