Toyota Venza: Engine Hood Courtesy Switch Circuit

Toyota Venza Service Manual / Theft Deterrent / Keyless Entry / Theft Deterrent System(w/ Smart Key System) / Engine Hood Courtesy Switch Circuit

DESCRIPTION

The security courtesy switch is installed together with the hood lock. This switch turns off when the engine hood is opened and turns on when the engine hood is closed.

WIRING DIAGRAM

PROCEDURE

1.	INSPECT HOOD LOCK ASSEMBLY (SECURITY COURTESY SWITCH)

(a) Remove the hood lock assembly (See page ).

(b) Disconnect the A7 security courtesy switch connector.

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
1 - 2	Opened	Below 1 Ω
1 - 2	Locked	10 kΩ or higher

Text in Illustration

Component without harness connected

(Hood Lock Assembly (Security Courtesy Switch))

Opened

Locked

REPLACE HOOD LOCK ASSEMBLY (SECURITY COURTESY SWITCH)

2.	CHECK HARNESS AND CONNECTOR (SECURITY COURTESY SWITCH - BODY GROUND)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A7-2 - Body ground	Always	Below 1 Ω

Text in Illustration

*1	Front view of wire harness connector (to Security Courtesy Switch)

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SECURITY COURTESY SWITCH)

(a) Disconnect the D50 main body ECU (driver side junction block assembly) connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
D50-16 (HCTY) - A7-1	Always	Below 1 Ω
D50-16 (HCTY) - Body ground	Always	10 kΩ or higher

Text in Illustration

Front view of wire harness connector

(to Main Body ECU (Driver Side Junction Block Assembly))

Front view of wire harness connector

(to Security Courtesy Switch)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

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