Toyota CH-R Service Manual: Engine Hood Courtesy Switch Circuit

Toyota CH-R Service Manual / Theft Deterrent / Keyless Entry / Theft Deterrent System / Engine Hood Courtesy Switch Circuit

DESCRIPTION

The hood courtesy switch is built into the hood lock assembly. This switch turns on when the hood is closed and turns off when the hood is opened.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to REGISTRATION.*1

Click here

  • *1: w/ Smart Key System

PROCEDURE

1.

READ VALUE USING TECHSTREAM (HOOD COURTESY SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Hood Courtesy SW

Hood courtesy switch

ON or OFF

ON: Hood open

OFF: Hood closed

-
Body Electrical > Main Body > Data List

Tester Display

Hood Courtesy SW

OK:

The Techstream display changes correctly in response to the hood courtesy switch (hood lock assembly) status.

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

2.

INSPECT HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)

(a) Remove the hood courtesy switch (hood lock assembly).

Click here

(b) Inspect the hood courtesy switch (hood lock assembly).

Click here

NG

REPLACE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)

OK

3.

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) - BODY GROUND)

(a) Disconnect the F15 main body ECU (multiplex network body ECU) connector.

(b) Disconnect the A8 hood courtesy switch (hood lock assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F15-11 (HCTY) - A8-1 (+)

Always

Below 1 Ω

F15-11 (HCTY) or A8-1 (+) - Body ground

Always

10 kΩ or higher

A8-2 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
    Operation History List
    OPERATION HISTORY LIST NOTICE: If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation his ...

    Horn Circuit
    DESCRIPTION When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (multiplex network body ECU) transmits a signal to cause the horns to s ...

    Other materials:

    Toyota CH-R Service Manual > Smart Key System(for Start Function): Ignition Hold Monitor Malfunction (B2271)
    DESCRIPTION This DTC is stored when a malfunction in the IG circuit or IG hold circuit of the certification ECU (smart key ECU assembly) is detected. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2271 ...

    Toyota CH-R Service Manual > Safety Connect System: Airbag Signal Malfunction/Not Input (B15C4)
    DESCRIPTION If the DCM (Telematics Transceiver) detects an error in communication between the DCM (Telematics Transceiver) and the airbag sensor assembly as a result of the DCM (Telematics Transceiver) self check, this DTC will be set. DTC No. Detection Item DT ...

    Toyota C-HR (AX20) 2023-2026 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2026 Copyright www.tochr.net
    0.0083