Dtc B2782 Power Source Control Ecu Malfunction

Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200
Steering Column. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC OUTPUT (B2785)

INSPECT STEERING LOCK ECU

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

DTC B2782 Power Source Control ECU Malfunction


DESCRIPTION

The steering lock ECU activates the steering lock motor by the power from the main body ECU through the IGE circuit. This prevents the steering from being locked while the vehicle is moving.
The diagnosis information of the steering lock ECU is transmitted to the intelligent tester via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.

DTC Code
Detection Condition
Trouble Area
B2782
IGE power supply circuit malfunction
  1. Steering lock actuator assembly (steering lock ECU)
  2. Main body ECU
  3. Harness or connector

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Steering Column.Power Tilt And Power Telescopic Steering Column System. Dtc B2782 Power Source Control Ecu Malfunction


INSPECTION PROCEDURE

HINT:
When the engine switch is off, the main body ECU may occasionally go into a non-active state called sleep mode. Therefore, before proceeding with the inspection, it is necessary to perform the following steps to wake up the ECU:
With the engine switch off, open the driver door. Then (with the engine switch still off) open and close any door several times at 1.5 second intervals.
1.CHECK DTC OUTPUT (B2785)

  1. Check for DTCs (Click here).

    OK:
    DTC B2782 is output, but DTC B2785 is not output.


NG
GO TO LIN COMMUNICATION SYSTEM (B2785) (Click here)
OK


2.INSPECT STEERING LOCK ECU
Land Cruiser. Urj200, 202 Grj200 Vdj200.Steering Column.Power Tilt And Power Telescopic Steering Column System. Dtc B2782 Power Source Control Ecu Malfunction

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E26-3 (IGE) - E26-1 (GND)
    1. Engine switch on (IG)
    2. Steering lock motor is operating
    		Below 1 V
    E26-3 (IGE) - E26-1 (GND)
    1. Engine switch on (IG)
    2. Steering lock motor is not operating
    		11 to 14 V
    Result
    Result
    		Proceed to
    Within specified range (for Power tilt and telescopic)
    		A
    Outside specified range
    		B
    Within specified range (for Manual tilt and telescopic)
    		C
    HINT:
    When the steering lock is activated and the engine switch is turned on (IG), the steering lock motor activates to release the steering lock. The motor operation occurs for 2 to 15 seconds.


B
Go to step 3

C
REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) (Click here)
A

REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) (Click here)

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

Land Cruiser. Urj200, 202 Grj200 Vdj200.Steering Column.Power Tilt And Power Telescopic Steering Column System. Dtc B2782 Power Source Control Ecu Malfunction

  1. Disconnect the E26 steering lock ECU connector.

  1. Disconnect the E1 main body ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E26-3 (IGE) - E1-19 (SLR+)
    		Always
    		Below 1 Ω
    E26-1 (GND) - Body ground
    		Always
    		Below 1 Ω
    E26-3 (IGE) or E1-19 (SLR+) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU