DTC B2782: Power Source Control ECU Malfunction: Procedure

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying Steering Lock Actuator Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Voltage

   Tester connection (Symbols)	Condition	Specified condition
   D14-3 (IGE) - D14-2 (SGND)	Engine switch off Turn the engine switch on (ACC or IG)	Motor active: Below 1 V Motor not active: 10 to 12 V
   D14-3 (IGE) - D14-2 (SGND)	Adjust the shift lever to the P position Turn the engine switch off Open the driver's door	Motor active: Below 1 V Motor not active: 10 to 12 V

   HINT: 

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

OK → REPLACE STEERING LOCK ACTUATOR ASSEMBLY 

NG: Go to next step 

1. Disconnect the D14 connector from the steering lock actuator assembly.
   Fig 2: Identifying Steering Lock Actuator Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Resistance

   Tester connection (Symbols)	Condition	Specified condition
   D14-2 (SGND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the D44 connector from the power source control ECU.
   Fig 3: Identifying Steering Lock Actuator Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.
   Fig 4: Checking D44 Power Source Control ECU Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Resistance

   Tester connection (Symbols)	Condition	Specified condition
   D14-3 (IGE) - D44-32 (SLR+)	Always	Below 1 Ω
   D14-3 (IGE) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE POWER SOURCE CONTROL ECU