PARKING SENSOR CONTROL MODULE INSPECTION

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1.  Remove the parking sensor control module with the connector connected. (See PARKING SENSOR CONTROL MODULE REMOVAL/INSTALLATION.)

2.  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 front 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
D	—	—	—	—	—	—	—
E	Ultrasonic sensor	Rear corner sensor (left)	Wave profile	(See Generated Pulse (reference))			•  Rear corner sensor (left) •  Related wiring harnesses
F	—	—	—	—	—	—	—
G	Ultrasonic sensor	Rear corner sensor (right)	Wave profile	(See Generated Pulse (reference))			•  Rear corner sensor (right) •  Related wiring harnesses
H	GND	Rear/Back sensor	Voltage	Under any condition	Under any condition	1.0 or less	•  Rear corner sensor (right) •  Rear corner sensor (left) •  Back sensor (right) •  Back sensor (left) •  Related wiring harnesses
I	Ultrasonic sensor	Front corner sensor (left)	Wave profile	(See Generated Pulse (reference))			•  Front corner sensor (left) •  Related wiring harnesses
J	GND	Front corner sensor (left)	Voltage	Under any condition	Under any condition	1.0 or less	•  Front corner sensor (left) •  Related wiring harnesses
K	Ultrasonic sensor	Front sensor (left)	Wave profile	(See Generated Pulse (reference))			•  Front sensor (left) •  Related wiring harnesses
L	GND	Front sensor (left)	Voltage	Under any condition	Under any condition	1.0 or less	•  Front sensor (left) •  Related wiring harnesses
M	Ultrasonic sensor	Front sensor (right)	Wave profile	(See Generated Pulse (reference))			•  Front sensor (right) •  Related wiring harnesses
N	GND	Front sensor (right)	Voltage	Under any condition	Under any condition	1.0 or less	•  Front sensor (right) •  Related wiring harnesses
O	Ultrasonic sensor	Front corner sensor (right)	Wave profile	(See Generated Pulse (reference))			•  Front corner sensor (right) •  Related wiring harnesses
P	GND	Front corner sensor (right)	Voltage	Under any condition	Under any condition	1.0 or less	•  Front corner sensor (right) •  Related wiring harnesses
Q	Ultrasonic sensor ground	Body ground	Voltage	Under any condition	Under any condition	1.0 or less	Related wiring harnesses
R	—	—	—	—	—	—	—
S	—	—	—	—	—	—	—
T	—	—	—	—	—	—	—
U	IG	Parking sensor switch	Voltage	Switch the ignition to ON	Parking sensor switch ON	B+	•  Parking sensor switch •  Related wiring harnesses
					Parking sensor switch OFF	1.0 or less
V	—	—	—	—	—	—	—
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
X	—	—	—	—	—	—	—
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
Z	Parking sensor buzzer (rear)	Parking sensor buzzer (rear)	Voltage	Ignition switch ON and parking sensor switch ON	Parking sensor switch ON and buzzer stopped	B+	•  Parking sensor buzzer (rear) •  Related wiring harnesses
					Parking sensor switch ON and buzzer sounding	1.0 or less
AA	Parking brake switch	Parking brake switch	Voltage	Ignition switch ON and parking sensor switch ON	Parking brake is activated	2.0 or less	•  Parking brake switch •  Related wiring harnesses
					Parking brake is not activated	5.0 or more
AB	Indicator	Parking sensor switch	Voltage	Switch the ignition to ON	Parking sensor switch is ON and parking sensor indicator light is not illuminated	B+	•  Parking sensor switch •  Related wiring harnesses
					Parking sensor switch is ON and parking sensor indicator light is illuminated	1.0 or less
					Parking sensor switch is OFF	1.0 or less
AC	Headlight washer	Headlight washer switch	Voltage	Ignition switch ON and parking sensor switch ON	Headlight washer switch is OFF	5.0 or more	•  Headlight washer switch •  Related wiring harnesses
					Headlight washer switch is ON	2.0 or less
AD	Trailer	Trailer switch	Voltage	Ignition switch ON and parking sensor switch ON	Trailer switch is ON	2.0 or less	•  Trailer switch •  Related wiring harnesses
					Trailer switch is OFF	5.0 or more
AE	Headlight	Light switch	Voltage	Ignition switch ON and parking sensor switch ON	Light switch is OFF	5.0 or more	•  Light switch •  Related wiring harnesses
					Light switch is ON	2.0 or less
AF	Tow-bar	Tow-bar switch	Voltage	Ignition switch ON and parking sensor switch ON	Tow-bar switch is ON	2.0 or less	•  Tow-bar switch •  Related wiring harnesses
					Tow-bar switch is OFF	5.0 or more

Generated Pulse (reference)

―  A—Q

―  C—Q

―  E—Q

―  G—Q

―  I—Q

―  K—Q

―  M—Q

―  O—Q

―  2 V/DIV (Y), 20 ms/DIV (X), DC range

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―  2 V/DIV (Y), 0.2 ms/DIV (X), DC range

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