DTC B2285: Steering Lock Position Signal Circuit Malfunction: Procedure

1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Check for DTC.

   Result

   Display (DTC output)	Proceed to
   "DTC B2285" only	A
   "DTC B2287" and/or "DTC 2785"	B
   No DTC	C

C → See step   7 

B → See step   6 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Check the Data List for proper functioning of the steering lock function.
   POWER SOURCE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Steering Unlock Switch	Steering lock condition / ON or OFF	ON: Steering is unlocked (Engine switch on (ACC)) OFF: Steering is locked (Engine switch off)	-

   OK

   ON (steering is unlocked) and OFF (steering is locked) appear on the screen.

NG → See step   3 

OK → REPLACE POWER SOURCE CONTROL ECU 

1. Disconnect the J55 connector from the power source control ECU.
   Fig 1: Identifying J55 And J29 Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the J29 connector from the steering lock ECU.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J55-26 (SLP) - J29-4 (SLP1)	Always	Below 1 Ω
   J55-26 (SLP) or J29-4 (SLP1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) 

OK: Go to next step 

1. Replace power source control ECU.

NEXT: Go to next step 

1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Check for DTCs.

   OK

   DTC B2285 is not output.

NG → See step   8 

OK → END (POWER SOURCE CONTROL ECU IS DEFECTIVE)