Dtc B2782 Power Source Control Ecu Malfunction

Steering. Camry. Acv40 Gsv40
Steering Column. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

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

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

DTC B2782 Power Source Control ECU Malfunction


DESCRIPTION

The main body ECU (*) controls the power supply to activate the steering lock motor. This prevents the steering wheel from being locked while the vehicle is moving.
HINT:
*: The power source control ECU is not a physical part. This code refers to the power source control function performed by the main body ECU.

DTC No.
DTC Detection Condition
Trouble Area
B2782
Steering lock motor drive control circuit is defective.
  1. Harness or connector
  2. Steering lock ECU (Steering lock actuator assembly)
  3. Main body ECU

WIRING DIAGRAM


Camry. Acv40 Gsv40.Steering Column.Steering System. Dtc B2782 Power Source Control Ecu Malfunction


INSPECTION PROCEDURE

NOTICE:
  1. If the steering lock ECU (steering lock actuator assembly) is replaced, with the engine switch off and the shift lever in P, open and close the driver door to record the current lock position into the steering lock ECU (steering lock actuator assembly). If this is not performed, the engine may not start.
  2. After replacing the steering lock ECU (steering lock actuator assembly), perform the key ID code registration.
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.INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)


    Camry. Acv40 Gsv40.Steering Column.Steering 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
    E69-3 (IGE) - E69-1 (GND)
    		The specified condition should be checked after performing the following:
    1. Turn the engine switch off
    2. Turn the engine switch on (ACC or IG)
    1. Motor activated: Below 1 V
    2. Motor not activated: 10 to 12 V
    E69-3 (IGE) - E69-1 (GND)
    		The specified condition should be checked after performing the following:
    1. Move the shift lever to the P position
    2. Turn the engine switch off
    3. Open the driver door
    1. Motor activated: Below 1 V
    2. Motor not activated: 10 to 12 V
    HINT:
    The steering lock ECU and steering lock actuator assembly are supplied as a unit.


NG
Go to step 2
OK

REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) (CAMRY_ACV40 RM000000WAE02TX.html)

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


    Camry. Acv40 Gsv40.Steering Column.Steering System. Dtc B2782 Power Source Control Ecu Malfunction

  1. Disconnect the E69 connector from the steering lock ECU.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E69-1 (GND) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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


    Camry. Acv40 Gsv40.Steering Column.Steering System. Dtc B2782 Power Source Control Ecu Malfunction

  1. Disconnect the E7 connector from the main body ECU.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E69-3 (IGE) - E7-19 (SLR+)
    		Always
    		Below 1 Ω
    E69-3 (IGE) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU