Inspection of Parking Sensor System Control Module and Its Circuit (If Equipped)

Precautions: Precautions for Body, Cab and Accessories · General safety (00)

Voltage and Signal Check

1)Remove parking sensor system control module (with connectors connected).

2)Check voltage and/or pulse signal using voltage and oscilloscope.

NOTE:

•Check that battery voltage is 12 V or more.
•Outputs from terminals marked with asterisk (*) cannot be measured with voltmeter because they are pulse signals. Use oscilloscope for measuring these outputs.

[A]:	Parking sensor system control module connector (View: [a])

“L13” connector

Terminal No.	Wire color	Circuit	Normal voltage	Condition
L13-2*	LT GRN	Parking sensor front buzzer signal (if equipped)	Refer to reference waveform. Parking sensor buzzer signal
L13-4	PNK	Parking sensor OFF switch indicator signal	Approx. 12 V	Parking sensor OFF switch indicator: OFF
L13-4	PNK	Parking sensor OFF switch indicator signal	Approx. 0 V	Parking sensor OFF switch indicator: ON
L13-5*	LT BLU	LIN communication signal (Combination meter)	Refer to reference waveform. LIN communication signal (combination meter)
L13-8	BRN	Parking sensor OFF switch signal	Approx. 12 V	Parking sensor OFF switch: in position
L13-8	BRN	Parking sensor OFF switch signal	Approx. 0 V	Parking sensor OFF switch: out position
L13-10	YEL	Parking sensor system control module power supply	Approx. 12 V	Ignition: “ON”
L13-11	BLU	Parking sensor rear buzzer signal	Refer to reference waveform. Parking sensor buzzer signal
L13-13	YEL	Reverse signal	Approx. 12 V	•Ignition: “ON” •Gear shift lever: “Reverse” position
L13-13	YEL	Reverse signal	Approx. 0 V	Other than above condition
L13-14	PPL	Rear parking sensor power supply (Rear-right)	Approx. 8 V	Ignition: “ON”
L13-15	GRN	Rear parking sensor power supply (Rear-center-right)	Approx. 8 V	Ignition: “ON”
L13-16	BEG	Rear parking sensor power supply (Rear-center left)	Approx. 8 V	Ignition: “ON”
L13-17	RED	Rear parking sensor power supply (Rear-left)	Approx. 8 V	Ignition: “ON”
L13-19	YEL	Front parking sensor power supply (Front-right) (if equipped)	Approx. 8 V	Ignition: “ON”
L13-20	BRN	Front parking sensor power supply (Front-center-right) (if equipped)	Approx. 8 V	Ignition: “ON”
L13-21	BLK	Parking sensor system control module ground	Approx. 0 V	—
L13-22	LT GRN or BLU	Parking sensor ground	Approx. 0 V	—
L13-23	WHT	Front parking sensor power supply (Front-left) (if equipped)	Approx. 8 V	Ignition: “ON”
L13-24	GRN	Front parking sensor power supply (Front-center-left) (if equipped)	Approx. 8 V	Ignition: “ON”

Reference Waveform

Oscilloscope display

Shown below is typical waveform display provided by oscilloscope.

NOTE:

•Display includes the following types of data:

[a]:	Waveform of channel 1	[c]:	VOLT/DIV of each channel
[b]:	Ground level of each channel	[d]:	TIME/DIV

•Waveform varies depending on measurement condition and vehicle spec.

Parking sensor buzzer signal

Parking sensor rear buzzer signal

Channel	Probe	Terminal No.
1	+	L13-1
1	–	L13-21

Measurement condition

•Ignition: “ON”
•Rear parking sensor system: operating

Parking sensor front buzzer signal

Channel	Probe	Terminal No.
1	+	L13-12
1	–	L13-21

Measurement condition

•Ignition: “ON”
•Front parking sensor system: operating

Buzzer sounds

Buzzer does not sound

LIN communication signal (combination meter)

Channel	Probe	Terminal No.
1	+	L13-5
1	–	L13-21

Measurement condition

•Ignition: “ON”
•Parking sensor system: operating

1.	LIN communication signal

Communication signal (parking sensor)

Communication signal (rear parking sensor)

Channel	Probe	Terminal No.
1	+	L13-6
1	–	L13-21

Measurement condition

•Ignition: “ON”
•Rear parking sensor system: operating

Communication signal (front parking sensor)

Channel	Probe	Terminal No.
1	+	L13-7
1	–	L13-21

Measurement condition

•Ignition: “ON”
•Front parking sensor system: operating

1.	Communication signal