Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000018K2A
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: CRUISE CONTROL: FORWARD RECOGNITION CAMERA SYSTEM: TERMINALS OF ECU; 2018 - 2020 MY Sienna [11/2017 -        ]

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

T32-7 (IGB) - T32-10 (GND)

L - W-B

Power source

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

T32-1 (HTR) - T32-10 (GND)

R - W-B

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

T32-10 (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

T32-5 (CA1P) - T32-10 (GND)

G - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

T32-11 (CA1N) - T32-10 (GND)

W - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

T32-6 (CANH) - T32-10 (GND)

L - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

T32-12 (CANL) - T32-10 (GND)

W - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

(1) WAVEFORM 1

Item

Content

Terminal Name

Between T32-5 (CA1P) and T32-10 (GND)

Between T32-6 (CANH) and T32-10 (GND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

(2) WAVEFORM 2

Item

Content

Terminal Name

Between T32-11 (CA1N) and T32-10 (GND)

Between T32-12 (CANL) and T32-10 (GND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.