Terminals Of Driving Support Ecu Assembly [11/2016 - ]
- CHECK DRIVING SUPPORT ECU ASSEMBLY
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition F126-7 (B) - F126-28 (GND) R - W-B Power source Ignition switch ON 11 to 14 V*1
10.5 to 16 V*2Ignition switch off Below 1 V F126-3 (BZ) - F126-28 (GND) L - W-B Skid control buzzer assembly output Ignition switch ON, buzzer not sounding 11 to 14 V Ignition switch ON, buzzer sounding Below 1 V F126-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω (1) *1: w/o Stop and Start System. *2: w/ Stop and Start System - Check for pulses according to the value(s) in the table below.
HINT:
If the waveform is not similar to that shown in the illustration, a malfunction of a CAN bus line, terminating resistor, or the driving support ECU assembly is suspected.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition F126-8 (CA1P) - F126-28 (GND) B - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 1)F126-9 (CA1N) - F126-28 (GND) W - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 2)F126-10 (CA2H) - F126-28 (GND) G - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 1)F126-11 (CA2L) - F126-28 (GND) W - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 2)- WAVEFORM 1
Item Content Terminal Name Between F126-8 (CA1P) - F126-28 (GND)
Between F126-10 (CA2H) - F126-28 (GND)Tester Range 1 V/DIV., 10 μsec./DIV. Condition Ignition switch ON HINT:
The waveform varies depending on the CAN communication signal.
- WAVEFORM 2
Item Content Terminal Name Between F126-9 (CA1N) - F126-28 (GND)
Between F126-11 (CA2L) - F126-28 (GND)Tester Range 1 V/DIV., 10 μsec./DIV. Condition Ignition switch ON HINT:
The waveform varies depending on the CAN communication signal.
- WAVEFORM 1
- Measure the voltage and resistance according to the value(s) in the table below.
- CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A81-8 (IGB) - A81-1 (SGND) R - BR Power source Ignition switch ON 11 to 14 V*1
10.5 to 16 V*2A81-1 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω (1) *1: w/o Stop and Start System. *2: w/ Stop and Start System - Check for pulses according to the value(s) in the table below.
HINT:
If the waveform is not similar to that shown in the illustration, a malfunction of a CAN bus line, terminating resistor, or the millimeter wave radar sensor assembly is suspected.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A81-3 (CA2H) - A81-1 (SGND) P - BR CAN communication signal Ignition switch ON Pulse generation
(See waveform 1)A81-2 (CA2L) - A81-1 (SGND) W - BR CAN communication signal Ignition switch ON Pulse generation
(See waveform 2)A81-5 (CA1P) - A81-1 (SGND) B - BR CAN communication signal Ignition switch ON Pulse generation
(See waveform 1)A81-6 (CA1N) - A81-1 (SGND) W - BR CAN communication signal Ignition switch ON Pulse generation
(See waveform 2)- WAVEFORM 1
Item Content Terminal Name Between A81-3 (CA2H) and A81-1 (SGND)
Between A81-5 (CA1P) and A81-1 (SGND)Tester Range 1 V/DIV., 10 μsec./DIV. Condition Ignition switch ON HINT:
The waveform varies depending on the CAN communication signal.
- WAVEFORM 2
Item Content Terminal Name Between A81-2 (CA2L) and A81-1 (SGND)
Between A81-6 (CA1N) and A81-1 (SGND)Tester Range 1 V/DIV., 10 μsec./DIV. Condition Ignition switch ON HINT:
The waveform varies depending on the CAN communication signal.
- WAVEFORM 1
- Measure the voltage and resistance according to the value(s) in the table below.