Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001CUR1 |
Model Year Start: 2019 |
Model: GR Corolla |
Prod Date Range: [06/2018 - 06/2021] |
Title: CRUISE CONTROL: FRONT CAMERA SYSTEM (for Gasoline Model): TERMINALS OF ECU; 2019 - 2021 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 06/2021] |
TERMINALS OF ECU
NOTICE:
-
DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the Techstream once the inspection has been completed.
-
Do not apply excessive force to the forward recognition camera connector.
CHECK FORWARD RECOGNITION CAMERA
(a) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol)
|
Wiring Color
|
Terminal Description
|
Condition
|
Specified Condition
|
T9-7 (IGB) - T9-10 (GND)
|
B - W-B
|
Power source
|
Engine switch on (IG)
|
11 to 14 V
|
Engine switch off
|
Below 1 V
|
T9-1 (HTR) - T9-10 (GND)
|
G - W-B
|
Forward recognition with heater hood sub-assembly operation signal
|
Engine switch on (IG)
Forward recognition with heater hood sub-assembly not operating
|
11 to 14 V
|
Engine switch on (IG)
Forward recognition with heater hood sub-assembly operating
|
Below 1 V
|
T9-10 (GND) - Body ground
|
W-B - Body ground
|
Ground
|
Always
|
Below 1 Ω
|
(b) 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 forward recognition camera is suspected.
Terminal No. (Symbol)
|
Wiring Color
|
Terminal Description
|
Condition
|
Specified Condition
|
T9-5 (CA1P) - T9-10 (GND)
|
W - W-B
|
CAN communication signal
|
Engine switch on (IG)
|
Pulse generation
(See waveform 1)
|
T9-11 (CA1N) - T9-10 (GND)
|
B - W-B
|
CAN communication signal
|
Engine switch on (IG)
|
Pulse generation
(See waveform 2)
|
T9-6 (CANH) - T9-10 (GND)
|
G - W-B
|
CAN communication signal
|
Engine switch on (IG)
|
Pulse generation
(See waveform 1)
|
T9-12 (CANL) - T9-10 (GND)
|
R - W-B
|
CAN communication signal
|
Engine switch on (IG)
|
Pulse generation
(See waveform 2)
|
(1) WAVEFORM 1
Item
|
Content
|
Terminal Name
|
Between T9-5 (CA1P) and T9-10 (GND)
Between T9-6 (CANH) and T9-10 (GND)
|
Tester Range
|
1 V/DIV., 10 μs/DIV.
|
Condition
|
Engine switch on (IG)
|
HINT:
The waveform varies depending on the CAN communication signal.
(2) WAVEFORM 2
Item
|
Content
|
Terminal Name
|
Between T9-11 (CA1N) and T9-10 (GND)
Between T9-12 (CANL) and T9-10 (GND)
|
Tester Range
|
1 V/DIV., 10 μs/DIV.
|
Condition
|
Engine switch on (IG)
|
HINT:
The waveform varies depending on the CAN communication signal.
|