DTC B2786: No Response from Steering Lock ECU [04/2018 - ]: Procedure

1. Disconnect the G40 certification ECU (smart key ECU assembly) connector.
2. Disconnect the G43 steering lock ECU (steering lock actuator or upper bracket assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G40-13 (LIN) - G43-5 (LIN)	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G43-7 (B) - G43-1 (GND)	Power switch off	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G43-1 (GND) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Replace the steering lock ECU (steering lock actuator or upper bracket assembly).

   for Manual Tilt and Manual Telescopic Steering Column: Refer to DISASSEMBLY [04/2018 - ]

   for Power Tilt and Power Telescopic Steering Column: Refer to DISASSEMBLY [04/2018 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Register the recognition codes in the ECUs.

   HINT: 

   Refer to Registration.

   Refer to REGISTRATION [04/2018 - 08/2020] , or refer to REGISTRATION [08/2020 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Clear the DTCs.

   Body Electrical > Smart Key > Clear DTCs 

2. Recheck for DTCs.

   Body Electrical > Smart Key > Trouble Codes 

   OK

   DTC B2786 is not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) WAS DEFECTIVE) 

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ]