Toyota Parking Assist-Sensor System (W/ Multi-Display) -- Terminals Of Ecu |
| CHECK CLEARANCE WARNING ECU |
| *A | for 4 Sensor Type | *B | for 8 Sensor Type |
Measure the voltage and resistance and check for pulse signals according to the value(s) in the table below.
for 4 Sensor Type Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition I1-7 (BOR) - I1-17 (E) P - W-B Power source for rear sensor circuit Engine switch off Below 1.5 V Engine switch on (IG), TOYOTA parking assist-sensor system on 7.2 to 8.8 V I1-10 (BBZ) - I1-17 (E) GR - W-B Clearance warning buzzer signal Engine switch off Below 1.5 V Engine switch on (IG), TOYOTA parking assist-sensor system on 11 to 14 V I1-11 (EF) - I1-17 (E) LG - W-B Ground for clearance warning buzzer When sonar detects obstacle (Buzzer sounds) Pulse generation
(See waveform 1)I1-12 (CSSW) - I1-17 (E) V - W-B Clearance sonar main switch signal Engine switch on (IG), clearance sonar main switch on 11 to 14 V Engine switch on (IG), clearance sonar main switch off Below 1 V I1-15 (IG) - I1-17 (E) L - W-B IG power source signal Engine switch off Below 1.5 V Engine switch on (IG) 11 to 14 V I1-17 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω I1-18 (E2) - I1-17 (E) R - W-B Ground for rear sensors Always Below 1 Ω I1-24 (SOR) - I1-17 (E) W - W-B Rear sensor communication signal Engine switch on (IG), TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
(See waveform 2)for 8 Sensor Type Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition G154-7 (BOR) - G154-17 (E) P - W-B Power source for rear sensor circuit Engine switch off Below 1.5 V Engine switch on (IG), TOYOTA parking assist-sensor system on 7.2 to 8.8 V G154-9 (SOF) - G154-17 (E) R - W-B Front sensor communication signal Engine switch on (IG), TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
(See waveform 2)G154-10 (BBZ) - G154-17 (E) GR - W-B Clearance warning buzzer signal Engine switch off Below 1.5 V Engine switch on (IG), TOYOTA parking assist-sensor system on 11 to 14 V G154-11 (EF) - G154-17 (E) LG - W-B Ground for clearance warning buzzer When sonar detects obstacle (Buzzer sounds) Pulse generation
(See waveform 1)G154-12 (CSSW) - G154-17 (E) V - W-B Clearance sonar main switch signal Engine switch on (IG), clearance sonar main switch on 11 to 14 V Engine switch on (IG), clearance sonar main switch off Below 1 V G154-15 (IG) - G154-17 (E) L - W-B IG power source signal Engine switch off Below 1.5 V Engine switch on (IG) 11 to 14 V G154-17 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω G154-18 (E2) - G154-17 (E) R - W-B Ground for rear sensors Always Below 1 Ω G154-19 (E1) - G154-17 (E) G - W-B Ground for front sensors Always Below 1 Ω G154-21 (BOF) - G154-17 (E) V - W-B Power source for front sensor circuit Engine switch off Below 1.5 V Engine switch on (IG), TOYOTA parking assist-sensor system on 7.2 to 8.8 V G154-24 (SOR) - G154-17 (E) W - W-B Rear sensor communication signal Engine switch on (IG), TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
(See waveform 2)Using an oscilloscope, check waveform 1.
Measurement Condition Item Content Terminal No. (Symbol) - I1-11 (EF) - I1-17 (E)*1
- G154-11 (EF) - G154-17 (E)*2
Tool Setting 2 V/DIV., 500 μsec./DIV. Condition When sonar detects obstacle (Buzzer sounds) - *1: for 4 Sensor Type
- *2: for 8 Sensor Type
- I1-11 (EF) - I1-17 (E)*1
Using an oscilloscope, check waveform 2.
Measurement Condition Item Content Terminal No. (Symbol) - CH1: G154-9 (SOF) - G154-17 (E)
- CH2: I1-24 (SOR) - I1-17 (E)*1
- CH2: G154-24 (SOR) - G154-17 (E)*2
Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine switch on (IG), TOYOTA parking assist-sensor system on, shift lever in R - *1: for 4 Sensor Type
- *2: for 8 Sensor Type
- CH1: G154-9 (SOF) - G154-17 (E)
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| CHECK DRIVING SUPPORT SWITCH CONTROL ECU (for 8 Sensor Type) |
for Automatic Transmission:
Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition G163-5 (SWI1) - G163-14 (SWI2) SB - P Steering pad switch assembly input signal (Menu, ENTER, Up, or Down switch) Engine switch on (IG), Menu switch pressed 0 V Engine switch on (IG), ENTER switch pressed 0.9 V Engine switch on (IG), Up switch pressed 3.4 V Engine switch on (IG), Down switch pressed 2.0 V Engine switch on (IG), Menu, ENTER, Up, or Down switch not pressed 4.9 V G163-14 (SWI2) - Body ground P - Body ground Steering pad switch assembly input signal (Menu, ENTER, Up, or Down switch) Always Below 1 V G162-9 (SWO1) - Body ground V - Body ground Steering pad switch assembly output signal (Menu, ENTER, Up, or Down switch) Engine switch on (IG), Menu, ENTER, Up, or Down switch pressed to turn TOYOTA parking assist-sensor system on 11 to 14 V Engine switch on (IG), Menu, ENTER, Up, or Down switch not pressed Below 1 V
for Manual Transmission:
Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition G76-3 (SWI1) - G76-4 (SWI2) SB - P Steering pad switch assembly input signal (Menu, ENTER, Up, or Down switch) Engine switch on (IG), Menu switch pressed 0 V Engine switch on (IG), ENTER switch pressed 0.9 V Engine switch on (IG), Up switch pressed 3.4 V Engine switch on (IG), Down switch pressed 2.0 V Engine switch on (IG), Menu, ENTER, Up, or Down switch not pressed 4.9 V G76-4 (SWI2) - Body ground P - Body ground Steering pad switch assembly input signal (Menu, ENTER, Up, or Down switch) Always Below 1 V G76-12 (SWO1) - Body ground V - Body ground Steering pad switch assembly output signal (Menu, ENTER, Up, or Down switch) Engine switch on (IG), Menu, ENTER, Up, or Down switch pressed to turn TOYOTA parking assist-sensor system on 11 to 14 V Engine switch on (IG), Menu, ENTER, Up, or Down switch not pressed Below 1 V