Toyota Venza: Engine Hood Courtesy Switch Circuit

Toyota Venza Service Manual / Theft Deterrent / Keyless Entry / Theft Deterrent System(w/o 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

Data List / Active Test

DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any p ...

Horn Circuit

DESCRIPTION When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (driver side junction block assembly) transmits a signal to cause the h ...

Other materials about Toyota Venza:

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (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 / Smart Key. Main Body or Power Source Control / Trouble Codes. (e) Ch ...

Installation
INSTALLATION PROCEDURE 1. CLEAN QUARTER WINDOW ASSEMBLY (a) Clean the outer edges of the quarter window assembly with a non-residue solvent. NOTICE: Do not touch the glass surface after cleaning it. Be careful not to ...

System Description
SYSTEM DESCRIPTION 1. TOUCH SWITCH OUTLINE (a) Touch switches are touch-sensitive (interactive) switches operated by touching the screen. When a switch is pressed, the outer film bends in to contact the inner glass at the pressed position. By doing this, ...