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

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*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.

(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	-

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.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

2.	INSPECT HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)

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

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

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REPLACE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)

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.

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

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

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