Terminals Of Ecu [09/2017 - 05/2019]
- 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 I159-7 (B) - I159-28 (GND) Y - W-B Power source Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V I159-3 (BZ) - I159-28 (GND) SB - W-B Skid control buzzer output Engine switch on (IG), buzzer not sounding 11 to 14 V Engine switch on (IG), buzzer sounding Below 1 V I159-28 (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 I159-8 (CA1P) - I159-28 (GND) L - W-B CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)I159-9 (CA1N) - I159-28 (GND) W - W-B CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)I159-10 (CA2H) - I159-28 (GND) V - W-B CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)I159-11 (CA2L) - I159-28 (GND) W - W-B CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)- WAVEFORM 1
Item Content Terminal Name Between I159-8 (CA1P) - I159-28 (GND)
Between I159-10 (CA2H) - I159-28 (GND)Tester Range 1 V/DIV., 10 μsec./DIV. Condition Engine switch on (IG) HINT:
The waveform varies depending on the CAN communication signal.
- WAVEFORM 2
Item Content Terminal Name Between I159-9 (CA1N) - I159-28 (GND)
Between I159-11 (CA2L) - I159-28 (GND)Tester Range 1 V/DIV., 10 μsec./DIV. Condition Engine switch on (IG) 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
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 B13-8 (IGB) - B13-1 (SGND) R - W Power source Engine switch on (IG) 11 to 14 V B13-1 (SGND) - Body ground W - 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 is suspected.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition B13-3 (CA2H) - B13-1 (SGND) L - W CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)B13-2 (CA2L) - B13-1 (SGND) B - W CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)B13-5 (CA1P) - B13-1 (SGND) SB - W CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)B13-6 (CA1N) - B13-1 (SGND) W - W CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)- WAVEFORM 1
Item Content Terminal Name Between B13-3 (CA2H) and B13-1 (SGND)
Between B13-5 (CA1P) and B13-1 (SGND)Tester Range 1 V/DIV., 10 μsec./DIV. Condition Engine switch on (IG) HINT:
The waveform varies depending on the CAN communication signal.
- WAVEFORM 2
Item Content Terminal Name Between B13-2 (CA2L) and B13-1 (SGND)
Between B13-6 (CA1N) and B13-1 (SGND)Tester Range 1 V/DIV., 10 μsec./DIV. Condition Engine switch on (IG) 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.