Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000002642C
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: ADVANCED DRIVER ASSISTANCE SYSTEM: FRONT CAMERA SYSTEM (for TMMMS Made): TERMINALS OF ECU; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]

TERMINALS OF ECU

NOTICE:

  • DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the GTS 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)

Terminal Description

Condition

Specified Condition

T9-7 (IGB) - T9-10 (GND)

Power source

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

T9-1 (HTR) - T9-10 (GND)

Forward recognition with heater hood sub-assembly operation signal

Ignition switch ON

Forward recognition with heater hood sub-assembly not operating

11 to 14 V

Ignition switch ON

Forward recognition with heater hood sub-assembly operating

Below 1 V

T9-10 (GND) - 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)

Terminal Description

Condition

Specified Condition

T9-5 (CA1P) - T9-10 (GND)

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

T9-11 (CA1N) - T9-10 (GND)

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

T9-6 (CANH) - T9-10 (GND)

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

T9-12 (CANL) - T9-10 (GND)

CAN communication signal

Ignition switch ON

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

Ignition switch ON

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

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.