Toyota CH-R Service Manual: Terminals Of Ecu

TERMINALS OF ECU

CHECK MILLIMETER WAVE RADAR SENSOR

(a) Measure the voltage and resistance according to the value(s) in the table below.

HINT:

If the result is not as specified, there may be a malfunction on the wire harness side.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A2-8 (IGB) - A2-1 (SGND)

B - W-B

Power source

Ignition switch ON

11 to 14 V

A2-1 (SGND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(b) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A2-3 (CA2H) - A2-1 (SGND)

G - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

A2-2 (CA2L) - A2-1 (SGND)

GR - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

A2-5 (CA1P) - A2-1 (SGND)

G - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

A2-6 (CA1N) - A2-1 (SGND)

R - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

(c) WAVEFORM 1

(1) CAN communication signal

Item

Content

Terminal Name

Between A2-3 (CA2H) and A2-1 (SGND)

Between A2-5 (CA1P) and A2-1 (SGND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

(d) WAVEFORM 2

(1) CAN communication signal

Item

Content

Terminal Name

Between A2-2 (CA2L) and A2-1 (SGND)

Between A2-6 (CA1N) and A2-1 (SGND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

CHECK FORWARD RECOGNITION CAMERA

(a) Measure the voltage and resistance according to the value(s) in the table below.

HINT:

If the result is not as specified, there may be a malfunction on the wire harness side.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

R5-8 (BZ) - R5-10 (GND)

B - W-B

Pre-collision city buzzer

Ignition switch ON, pre-collision city buzzer not operating

11 to 14 V

Ignition switch ON, pre-collision city buzzer operating

0 to 1.5 V

R5-3 (LKSW) - R5-10 (GND)

R - W-B

Pre-collision system cancel switch assembly

Pre-collision system cancel switch assembly being pressed

Below 1 Ω

Pre-collision system cancel switch assembly not being pressed

100 kΩ or higher

R5-7 (IGB) - R5-10 (GND)

B - W-B

Power source

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

R5-10 (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.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

R5-5 (CA1P) - R5-10 (GND)

R - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

R5-6 (CANH) - R5-10 (GND)

G - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

R5-11 (CA1N) - R5-10 (GND)

GR - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

R5-12 (CANL) - R5-10 (GND)

R - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

(c) WAVEFORM 1

(1) CAN communication signal

Item

Content

Terminal Name

Between R5-5 (CA1P) - R5-10 (GND)

Between R5-6 (CANH) - R5-10 (GND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

(d) WAVEFORM 2

(1) CAN communication signal

Item

Content

Terminal Name

Between R5-11 (CA1N) - R5-10 (GND)

Between R5-12 (CANL) - R5-10 (GND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

    Problem Symptoms Table
    PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are lis ...

    Diagnosis System
    DIAGNOSIS SYSTEM CHECK DLC3 (a) Check the DLC3. Click here FUNCTION OF WARNING INDICATOR AND MESSAGE (a) If the pre-collision system is not functioning properly, the driver is warned by the P ...

    Other materials:

    Toyota CH-R Service Manual > Fog Light Assembly: Adjustment
    ADJUSTMENT PROCEDURE 1. PREPARE VEHICLE FOR FOG LIGHT AIM ADJUSTMENT (a) Prepare the vehicle: Ensure that there is no damage or deformation to the vehicle body around the fog lights. Fill the fuel tank. Make sure that the oil is filled to the specified level. Make sure tha ...

    Toyota CH-R Service Manual > Tire Pressure Warning System: Initialization
    INITIALIZATION NOTICE: Initialization can be confirmed through the tire pressure warning light. If the ignition switch off during initialization, the tire pressure warning ECU and receiver memorizes that initialization was being performed. Therefore, it is not necessary to p ...

    © 2017-2020 Copyright www.tochr.net
    0.0255