Terminals Of Ecu
WARNING: This page is about a different car, the 2012 Lexus GX 460. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK PARKING ASSIST ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the voltage, resistance and check for pulses according to value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition I3-1 (+B) - I3-3 (GND1) L - W-B Power source signal Always 11 to 14 V I3-3 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω I3-7 (IG) - I3-3 (GND1) L - W-B IG power source signal Engine switch on (IG) 11 to 14 V I3-8 (ACC) - I3-3 (GND1) P - W-B ACC power source signal Engine switch on (ACC) 11 to 14 V I2-11 (CV-) - I3-3 (GND1) W - W-B Rear television camera ground Always Below 1 V I2-12 (CV+) - I2-11 (CV-) R - W Rear television camera display signal (NTSC) input Engine switch on (IG), shift lever in R Pulse generation
(See waveform 1)Engine switch on (IG), shift lever in R, screen blacked out by covering camera lens Pulse generation
(See waveform 2)I2-13 (CGND) - I3-3 (GND1) GR - W-B Rear television camera shielded ground Always Below 1 V I2-14 (CB+) - I3-3 (GND1) B - W-B Power source to rear television camera Engine switch on (IG), shift lever in R 5.8 to 7.05 V - Using an oscilloscope, check waveform 1.MEASUREMENT CONDITION
Item Content Terminal No. (Symbol) I2-12 (CV+) - I2-11 (CV-) Tool Setting 0.2 V/DIV., 50 μs./DIV. Condition Engine switch on (IG), shift lever in R - Using an oscilloscope, check waveform 2.MEASUREMENT CONDITION
Item Content Terminal No. (Symbol) I2-12 (CV+) - I2-11 (CV-) Tool Setting 0.2 V/DIV., 50 μs./DIV. Condition Engine switch on (IG), shift lever in R, screen blacked out by covering camera lens
- Measure the voltage, resistance and check for pulses according to value(s) in the table below.