Toyota CH-R Service Manual: ECU Power Source Circuit

Toyota CH-R Service Manual / Pre-collision / Pre-collision System / ECU Power Source Circuit

DESCRIPTION

This circuit supplies power to the millimeter wave radar sensor assembly when the ignition switch is ON.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY (IGB VOLTAGE)

(a) Disconnect the millimeter wave radar sensor assembly connector.

*a

Front view of wire harness connector

(to Millimeter Wave Radar Sensor Assembly)

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

A2-8 (IGB) - Body ground

Ignition switch ON

11 to 14 V

(d) Turn the ignition switch off.

(e) Reconnect the millimeter wave radar sensor assembly connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK

2.

CHECK HARNESS AND CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - BODY GROUND)

(a) Disconnect the millimeter wave radar sensor assembly connector.

*a

Front view of wire harness connector

(to Millimeter Wave Radar Sensor Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A2-1 (SGND) - Body ground

Always

Below 1 Ω

(c) Connect the millimeter wave radar sensor assembly connector.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
    Front Radar Sensor (C1A10)
    DESCRIPTION C1A10 is output when there is an internal malfunction in the millimeter wave radar sensor assembly. DTC No. Detection Item DTC Detection Condition ...

    Pre-collision System Warning Buzzer
    Components COMPONENTS ILLUSTRATION *1 PRE-COLLISION CITY BUZZER - - Removal REMOVAL PROCEDURE 1. REMOVE FUSE BOX OPENING COVER Click ...

    Other materials:

    Toyota CH-R Service Manual > Power Steering System: Precaution
    PRECAUTION IGNITION SWITCH EXPRESSION HINT: The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section. Expression Ignition Switch (Position) Engine S ...

    Toyota CH-R Service Manual > Audio And Visual System(for Radio Receiver Type): USB Audio System Recognition/Play Error
    DESCRIPTION When a USB device or "iPod" is connected to the USB connector of the radio receiver assembly, it must have playable files. The device must also communicate with and be recognized by the radio receiver assembly. This diagnostic procedure is for when a device is not recogn ...

    Toyota C-HR (AX20) 2023-2025 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2025 Copyright www.tochr.net
    0.0066