DTC B2782: Power Source Control ECU Malfunction: Procedure

1. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

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

NG → See step   4 

OK: Go to next step 

Fig 1: Steering Lock Actuator Connector End View

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E77-3 (IGE) - E77-1 (GND)	Power switch on (IG) Steering lock motor operating	Below 1 V
   E77-3 (IGE) - E77-1 (GND)	Power switch on (IG) Steering lock motor not operating	11 to 14 V

   HINT: 

   When the steering lock is engaged and the power switch is turned on (IG), the steering lock motor activates to release the steering lock. The motor operation occurs for 2 to 15 seconds.

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   3 

OK → See step   5 

1. Disconnect the E15 main body ECU connector.
2. Disconnect the E77 steering lock ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E77-3 (IGE) - E15-7 (SLR+)	Always	Below 1 Ω
   E77-1 (GND) - Body ground	Always	Below 1 Ω
   E77-3 (IGE) or E15-7 (SLR+) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE MAIN BODY ECU