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: Identifying E26 Steering Lock ECU Connector Terminals

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
   E26-3 (IGE) - E26-1 (GND)	Engine switch on (IG) Steering lock motor is operating	Below 1 V
   E26-3 (IGE) - E26-1 (GND)	Engine switch on (IG) Steering lock motor is not operating	11 to 14 V

   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.

NG → See step   3 

OK → See step   5 

Fig 2: Identifying E26 Steering Lock ECU And E1 Main Body ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the E26 steering lock ECU connector.
2. Disconnect the E1 main body ECU connector.
3. 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