Toyota Venza manuals

Toyota Venza: Power Source Control ECU Malfunction (B2782)

Toyota Venza Service Manual / Steering Column / Steering Lock System / Power Source Control ECU Malfunction (B2782)

DESCRIPTION

The power management control ECU controls the power supply to activate the steering lock motor. This prevents the steering wheel from being locked while the vehicle is moving.

DTC No.

DTC Detecting Condition

Trouble Area

B2782

Steering lock motor drive control circuit is defective.

  • Wire harness
  • Steering lock ECU (Steering lock actuator assembly)
  • Power management control ECU

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

D17-3 (IGE) - D17-1 (GND)

Specified condition is checked after performing the following:

  1. Turn the engine switch off
  2. Turn the engine switch on (ACC or IG)
  • Motor activated: Below 1 V
  • Motor not activated: 10 to 12 V

D17-3 (IGE) - D17-1 (GND)

Specified condition is checked after performing the following:

  1. Move the shift lever to P
  2. Turn the engine switch off
  3. Open the driver's door
  • Motor activated: Below 1 V
  • Motor not activated: 10 to 12 V

HINT:

The steering lock ECU and steering lock actuator assembly are supplied as a single unit.


Text in Illustration

*1

Component with harness connected

(Steering Lock ECU (Steering Lock Actuator Assembly))


OK

REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)


NG

2.

CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - BODY GROUND)

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


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D17-1 (GND) - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

3.

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

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


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D17-3 (IGE) - D43-8 (SLR+)

Always

Below 1 Ω

D17-3 (IGE) - Body ground

Always

10 kΩ or higher

Text in Illustration

*1

Front view of wire harness connector

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

*2

Front view of wire harness connector

(to Power Management Control ECU)


OK

REPLACE POWER MANAGEMENT CONTROL ECU


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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