DTC B2285: Steering Lock Position Signal Circuit Malfunction: Procedure

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

   Result	Proceed to
   DTC B2285 is output	A
   DTC B2287 and/or DTC 2785 are/is output	B
   DTC is not output	C

B → See step   9 

C → See step   6 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Power Source Control / Data List.
5. Read the Data List according to the display on the Techstream.
   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) or OFF (steering is locked) appears on the screen according to vehicle operating conditions.

NG → See step   3 

OK → See step   8 

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

   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

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Power Source Control ECU)
   *2	Front view of wire harness connector (to Steering Lock ECU)

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

OK: Go to next step 

1. Replace the power source control ECU. Refer to REMOVAL .

NEXT: Go to next step 

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

   Result	Proceed to
   DTC B2285 is not output	A
   DTC B2285 is output	B

NG → See step   7 

OK → END (POWER SOURCE CONTROL ECU WAS DEFECTIVE)