Terminals Of Ecu [11/2017 - 01/2023]
- CHECK DRIVING SUPPORT ECU ASSEMBLY
- Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition Q2-7 (B) - Q2-28 (GND) B - BR Power source Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V Q2-3 (BZ) - Q2-28 (GND) SB - BR Skid control buzzer output Engine switch on (IG), buzzer not sounding 11 to 14 V Engine switch on (IG), buzzer sounding Below 1 V Q2-28 (GND) - Body ground BR - 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 Q2-8 (CA1P) - Q2-28 (GND) G - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)Q2-9 (CA1N) - Q2-28 (GND) B - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)Q2-10 (CA2H) - Q2-28 (GND) G - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)Q2-11 (CA2L) - Q2-28 (GND) B - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)- WAVEFORM 1
Item Content Terminal Name Between Q2-8 (CA1P) - Q2-28 (GND)
Between Q2-10 (CA2H) - Q2-28 (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 Q2-9 (CA1N) - Q2-28 (GND)
Between Q2-11 (CA2L) - Q2-28 (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 ASSEMBLY
- Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition B9-8 (IGB) - B9-1 (SGND) G - BR Power source Engine switch on (IG) 11 to 14 V B9-1 (SGND) - Body ground BR - 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 B9-3 (CA2H) - B9-1 (SGND) L - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)B9-2 (CA2L) - B9-1 (SGND) B - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)B9-5 (CA1P) - B9-1 (SGND) LG - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)B9-6 (CA1N) - B9-1 (SGND) B - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)- WAVEFORM 1
Item Content Terminal Name Between B9-3 (CA2H) and B9-1 (SGND)
Between B9-5 (CA1P) and B9-1 (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 B9-2 (CA2L) and B9-1 (SGND)
Between B9-6 (CA1N) and B9-1 (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.