Clearance Sonar System Terminals Of Ecu

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Park Assist Monitoring. Lexus Is250, Is220D. Gse20 Ale20

  1. CHECK CLEARANCE WARNING ECU

Clearance Sonar System -- Terminals Of Ecu



CHECK CLEARANCE WARNING ECU

Lexus Is250, Is220D. Gse20 Ale20.Park Assist Monitoring.Clearance Sonar System.Clearance Sonar System Terminals Of Ecu


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
IG (Q37-8) - E (Q37-27)
Y - W-B
IG signal / IG power source
Engine switch on (IG)
10 to 14 V
E (Q37-27) - Body ground
W-B - Body ground
ECU ground
Always
Below 1 Ω
S1 (Q37-5) - E1 (Q37-18)
Y - BR
Ultrasonic sensor
(Front right sensor)
Signals are transmitted from ECU to front right sensor (During OFF sensing)
Pulse generation
(see waveform 1)
S4 (Q37-6) - E4 (Q37-19)
GR- BR
Ultrasonic sensor
(Front left sensor)
Signals are transmitted from ECU to front left center sensor (During OFF sensing)
Pulse generation
(see waveform 1)
S5 (Q37-2) - E5 (Q37-15)
GR - W
Ultrasonic sensor
(Rear right sensor)
Signals are transmitted from ECU to front right sensor (During OFF sensing)
Pulse generation
(see waveform 1)
S6 (Q37-4) - E6 (Q37-17)
P - W
Ultrasonic sensor
(Rear left sensor)
Signals are transmitted from ECU to front left sensor (During OFF sensing)
Pulse generation
(see waveform 1)
S7 (Q37-1) - E7 (Q37-14)
R - W
Ultrasonic sensor
(Rear right center sensor)
Signals are transmitted from ECU to rear right center sensor (During OFF sensing)
Pulse generation
(see waveform 1)
S8 (Q37-3) - E8 (Q37-16)
G - W
Ultrasonic sensor
(Rear left center sensor)
Signals are transmitted from ECU to rear left center sensor (During OFF sensing)
Pulse generation
(see waveform 1)
E1 (Q37-18) - Body ground
BR - Body ground
Ultrasonic sensor
(Front right sensor) ground
Always
Bellow 1 Ω
E4 (Q37-19) - Body ground
BR - Body ground
Ultrasonic sensor
(Front left sensor) ground
Always
Bellow 1 Ω
E5 (Q37-15) - Body ground
W - Body ground
Ultrasonic sensor
(Rear right sensor) ground
Always
Bellow 1 Ω
E6 (Q37-17) - Body ground
W - Body ground
Ultrasonic sensor
(Rear left sensor) ground
Always
Bellow 1 Ω
E7 (Q37-14) - Body ground
W - Body ground
Ultrasonic sensor
(Rear right center sensor) ground
Always
Bellow 1 Ω
E8 (Q37-16) - Body ground
W - Body ground
Ultrasonic sensor
(Rear left center sensor) ground
Always
Bellow 1 Ω
CBZ (Q37-9) - E (Q37-27)
O - W-B
Buzzer output
Buzzer sounding
Pulse generation
(see waveform 2)
M+ (Q37-26) - E (Q37-27)
BR - W-B
BEAN communication
Engine switch on (IG), clearance sonar main switch ON
Pulse generation


    Lexus Is250, Is220D. Gse20 Ale20.Park Assist Monitoring.Clearance Sonar System.Clearance Sonar System Terminals Of Ecu

  1. Reference:

    1. Waveform 1

      Item
      		Content
      Symbols
      (Terminal No.)
      		S1 (Q37-5) - E1 (Q37-18)
      S4 (Q37-6) - E4 (Q37-19)
      S5 (Q37-2) - E5 (Q37-15)
      S6 (Q37-4) - E6 (Q37-17)
      S7 (Q37-1) - E7 (Q37-14)
      S8 (Q37-3) - E8 (Q37-16)
      Tool Setting
      		2 V/DIV., 100 μsec./DIV.
      Condition
      		Signals are transmitted from ECU to sensor (During OFF sensing)


      2. Lexus Is250, Is220D. Gse20 Ale20

    2. Waveform 2

      Item
      		Content
      Symbols
      (Terminal No.)
      		CBZ (Q37-9) - E (Q37-27)
      Tool Setting
      		2 V/DIV., 1 msec./DIV.
      Condition
      		Buzzer sounding