Terminals Of Ecu [08/2016 - ]
- 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 E71-7 (B) - E71-28 (GND) R - W-B Power source Ignition switch ON 11 to 14 V Ignition switch off Below 1 V E71-3 (BZ) - E71-28 (GND) B - W-B Skid control buzzer output Ignition switch ON, buzzer not sounding 11 to 14 V Ignition switch ON, buzzer sounding Below 1 V E71-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω - 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 E71-8 (CA1P) - E71-28 (GND) GR - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 1)E71-9 (CA1N) - E71-28 (GND) W - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 2)E71-10 (CA2H) - E71-28 (GND) P - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 1)E71-11 (CA2L) - E71-28 (GND) W - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 2)- WAVEFORM 1
Item Content Terminal Name Between E71-8 (CA1P) - E71-28 (GND)
Between E71-10 (CA2H) - E71-28 (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 E71-9 (CA1N) - E71-28 (GND)
Between E71-11 (CA2L) - E71-28 (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 A50-8 (IGB) - A50-1 (SGND) R - W-B Power source Ignition switch ON 11 to 14 V A50-1 (SGND) - Body ground W-B - Body ground Ground Always Below 1 Ω - 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 A50-3 (CA2H) - A50-1 (SGND) P - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 1)A50-2 (CA2L) - A50-1 (SGND) W - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 2)A50-5 (CA1P) - A50-1 (SGND) R - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 1)A50-6 (CA1N) - A50-1 (SGND) W - W-B CAN communication signal Ignition switch ON Pulse generation
(See waveform 2)- WAVEFORM 1
Item Content Terminal Name Between A50-3 (CA2H) and A50-1 (SGND)
Between A50-5 (CA1P) and A50-1 (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 A50-2 (CA2L) and A50-1 (SGND)
Between A50-6 (CA1N) and A50-1 (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.