DTC B2782: Power Source Control ECU Malfunction [03/2012 - 07/2012]: Procedure

1. Disconnect the F37 steering lock ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F37-1 (GND) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Steering Lock ECU)

3. Reconnect the F37 steering lock ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   F37-3 (IGE) - F37-1 (GND)	Specified condition is checked after performing the following: Turn the engine switch off Turn the engine switch on (ACC or IG)	Motor activated: Below 1 V Motor not activated: 10 to 12 V
   F37-3 (IGE) - F37-1 (GND)	Specified condition is checked after performing the following: Move the shift lever to P Turn the engine switch off Open the driver door	Motor activated: Below 1 V Motor not activated: 10 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Steering Lock ECU)

   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   4 

OK: Go to next step 

1. Clear the DTC. Refer to DTC CHECK / CLEAR [03/2012 - ] .
2. Disconnect and reconnect the cable to the negative (-) battery terminal to clear the malfunction history of Power Supply Open.

NEXT: Go to next step 

1. Check for DTCs. Refer to DTC CHECK / CLEAR [03/2012 - ] .
2. Use the Data List to check if the steering lock control is functioning properly.

   Smart Access

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Power Supply Open	Open in ECU record/ NG (Past) or OK	NG (Past): Open in ECU OK: No malfunction	-

   RESULT
   
   

   Result	Proceed to
   B2782 is not output. "OK" is displayed on the Techstream.	A
   B2782 is output. "NG (Past)" is displayed on the Techstream.	B

B → See step   6 

A → See step   7 

1. Disconnect the F8 power management control ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the F37 steering lock ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F37-3 (IGE) - F8-8 (SLR+)	Always	Below 1 Ω
   F37-3 (IGE) or F8-8 (SLR+) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1

   Rear view of wire harness connector (to Power Management Control ECU)

   *2

   Front view of wire harness connector (to Steering Lock ECU)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5