Toyota Venza: Unlock Position Sensor Signal Circuit

Toyota Venza Service Manual / Steering Column / Steering Lock System / Unlock Position Sensor Signal Circuit

DESCRIPTION

The unlock position sensor is one of the components comprising the steering lock ECU (steering lock actuator assembly). The sensor switch contact closes when the steering lock is released. The steering lock release signal is then sent to the power management control ECU. Upon receiving the signal, the ECU permits engine start. This prevents the engine from being started with the steering wheel locked.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

After replacing the steering lock ECU (steering lock actuator assembly), confirm the Initialization of the steering lock (See page ).

PROCEDURE

1.	INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
D17-4 (SLP1) - D17-1 (GND)	Turn the engine switch off Turn the engine switch on (ACC or IG)	Below 1 V

Text in Illustration

*1	Component with harness connected (Steering Lock ECU (Steering Lock Actuator Assembly))

REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

2.	CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - POWER MANAGEMENT CONTROL ECU)

(a) Disconnect the D17 connector from the steering lock ECU (steering lock actuator assembly).

(b) Disconnect the D43 connector from the power management control ECU.

Standard Resistance:

Tester Connection	Condition	Specified Condition
D17-4 (SLP1) - D43-3 (SLP)	Always	Below 1 Ω
D17-4 (SLP1) - Body ground	Always	10 kΩ or higher

Text in Illustration

Front view of wire harness connector

(to Steering Lock ECU (Steering Lock Actuator Assembly))

Front view of wire harness connector

(to Power Management Control ECU)

CHECK SMART KEY SYSTEM (for Start Function)

REPAIR OR REPLACE HARNESS OR CONNECTOR

Steering Lock Motor Drive Power Circuit

DESCRIPTION The steering lock ECU (steering lock actuator assembly) is connected to the power management control ECU. The steering lock ECU (steering lock actuator assembly) cannot activate the m ...

Power Source Circuit

DESCRIPTION This circuit supplies power source voltage from the battery to terminal B of the steering lock ECU (steering lock actuator assembly). This is used as power source for the CPU, motor, ...

Other materials about Toyota Venza:

Transfer Case Rear Oil Seal
Components COMPONENTS ILLUSTRATION ILLUSTRATION Replacement REPLACEMENT PROCEDURE 1. REMOVE TAIL EXHAUST PIPE ASSEMBLY 2. REMOVE CENTER EXHAUST PIPE ASSEMBLY 3. REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY 4. REMOVE TRANSFER C ...

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 parts. This non-intrusive inspection can be very useful bec ...

Cellular Phone Inspection
PROCEDURE 1. CHECK USAGE CONDITION (a) Check that the vehicle and cellular phone meet the following conditions: NOTICE: If changing cellular phone settings, updating software, etc. is necessary, make sure to obtain the per ...