PARKING SENSOR CONTROL MODULE INSPECTION

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1.  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

2.  Remove the following parts:

L.H.D.

1.  Front scuff plate (RH) (See FRONT SCUFF PLATE REMOVAL/INSTALLATION.)

2.  Front side trim (RH) (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)

3.  Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)

4.  Center panel (See CENTER PANEL REMOVAL/INSTALLATION.)

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

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

R.H.D.

1.  Front scuff plate (RH) (See FRONT SCUFF PLATE REMOVAL/INSTALLATION.)

2.  Front side trim (RH) (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)

3.  Bonnet release lever (See BONNET RELEASE LEVER AND RELEASE CABLE REMOVAL/INSTALLATION.)

4.  Fuel-filler lid opener lever (See FUEL-FILLER LID OPENER AND LEVER REMOVAL/INSTALLATION.)

5.  Driver-side lower panel (See DRIVER-SIDE LOWER PANEL REMOVAL/INSTALLATION.)

3.  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

4.  Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (reference).

•  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 operate normally even though the inspection items are normal, replace the parking sensor control module.

Terminal Voltage Table (Reference)

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Terminal	Signal name	Connected to	Test condition		Voltage (V)	Inspection item
A	GND	Body ground	Under any condition		1.0 or less	Body ground
B	—	—	—		—	—
C	—	—	—		—	—
D	—	—	—		—	—
E	Ultrasonic sensor	Corner ultrasonic sensor (LH)	Wave pattern (See Inspection Using an Oscilloscope (reference).)			Corner ultrasonic sensor (LH)
F	—	—	—		—	—
G	Ultrasonic sensor	Corner ultrasonic sensor (RH)	Wave pattern (See Inspection Using an Oscilloscope (reference).)			Corner ultrasonic sensor (RH)
H	Ultrasonic sensor GND	•  Ultrasonic sensor •  Corner ultrasonic sensor	Under any condition		1.0 or less	•  Ultrasonic sensor •  Corner ultrasonic sensor
I	Ultrasonic sensor	Ultrasonic sensor (LH)	Wave pattern (See Inspection Using an Oscilloscope (reference).)			Ultrasonic sensor (LH)
J	—	—	—		—	—
K	Ultrasonic sensor	Ultrasonic sensor (RH)	Wave pattern (See Inspection Using an Oscilloscope (reference).)			Ultrasonic sensor (RH)
L	Speed	Instrument cluster	Determination using terminal voltage inspection is not possible.
M	—	—	—		—	—
N	Reverse	Electrical supply unit (ESU)	Ignition switched ON (engine off or on)		B+	Electrical supply unit (ESU)
			Ignition switched off or ACC		1.0 or less
O	—	—	—		—	—
P	—	—	—		—	—
Q	—	—	—		—	—
R	Parking sensor buzzer GND	Parking sensor buzzer	Ignition switched ON (engine off or on)	Buzzer sounding	1.0 or less	Parking sensor buzzer
				Buzzer stopped	B+
S	—	—	—		—	—
T	Parking sensor buzzer	Parking sensor buzzer	Ignition switched ON (engine off or on)		B+	Parking sensor buzzer
			Ignition switched off or ACC		1.0 or less
U	—	—	—		—	—
V	—	—	—		—	—
W	IG1*1	Ignition relay (IG1_STAB)	Ignition switched ON (engine off or on)		B+	•  Ignition relay (IG1_STAB) •  METER2 7.5A fuse
			Ignition switched off or ACC		1.0 or less
	IG1*2	IG1 relay	Ignition switched ON (engine off or on)		B+	•  C/U IG1 15A fuse •  IG1 relay
			Ignition switched off or ACC		1.0 or less
X	—	—	—		—	—

Inspection Using an Oscilloscope (reference)

Oscilloscope setting:			Terminal
Ignition	Shift lever position	Vehicle speed	Corner ultrasonic sensor (LH)	Ultrasonic sensor (LH)	Ultrasonic sensor (RH)	Corner ultrasonic sensor (RH)
ON (engine off or on)	R position	0—15 km/h {0—9.3 mph} or less	E—B	I—B	K—B	G—B

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

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