DTC B2782-11: Power Source Control System Circuit Short to Ground [11/2021 - 03/2023]: Procedure

Pre-procedure1

1. Perform the DTC output confirmation operation.

   Procedure1

2. Check if DTC B2785-88 is output.

   Body Electrical > Smart Access > Trouble Codes 

   Result

   Result	Proceed to
   B2785-88 is not output	A
   B2785-88 is output	B

   Post-procedure1

3. None

Result: 

B 

GO TO LIN COMMUNICATION SYSTEM (DTC B2785-88). Refer to  DTC B2785-88: Communication between ECUs connected by LIN Bus off [11/2021 - 03/2023] 

Result: 

A 

See step  2

Pre-procedure1

1. Disconnect the D61 steering lock ECU (steering lock actuator with ECU assembly) connector.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D61-1 (GND) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

   Post-procedure1

3. None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

Pre-procedure1

1. Connect the D61 steering lock ECU (steering lock actuator with ECU assembly) connector.

   Procedure1

2. Check the signal waveform according to the condition(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Steering lock ECU (steering lock actuator with ECU assembly))
   *b	Waveform
   *c	Steering lock motor not operating
   *d	Steering lock motor operating

   Tester Connection	Condition	Tool Setting	Specified Condition
   D61-3 (IGE) - D61-1 (GND)	Steering lock motor operating when all conditions met, and then door opened: Shift position in P Steering unlocked Ignition switch turned off	2 V/DIV., 200 ms./DIV.	Pulse generation (See waveform)

   Result

   Proceed to
   OK
   NG

   Post-procedure1

3. None

Result: 

NG 

See step  7

Result: 

OK 

See step  4

1. Clear the DTCs.

   Body Electrical > Smart Access > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Disconnect the cable from the negative (-) auxiliary battery terminal, wait for 30 seconds or more, and then reconnect the cable to the negative (-) auxiliary battery terminal to clear the record of malfunctions stored in the Data List.

   HINT: 

   After turning the ignition switch off, waiting time may be required before disconnecting the cable from the auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the auxiliary battery terminal notices before proceeding with work.

   Refer to PRECAUTION [11/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

Pre-procedure1

1. Perform the DTC output confirmation operation.

   Procedure1

2. Check if DTC B2782-11 is output.

   Body Electrical > Smart Access > Trouble Codes 

   Result

   Result	Proceed to
   B2782-11 is not output	A
   B2782-11 is output	B

   Post-procedure1

3. None

Result: 

A 

SYSTEM RETURNED TO NORMAL (DTC STORED DUE TO BAD CONNECTION, BUT SYSTEM RETURNED TO NORMAL BY RECONNECTING CONNECTOR) 

Result: 

B 

REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR WITH ECU ASSEMBLY) 

for Power Tilt and Power Telescopic Steering Column: Refer to DISASSEMBLY [11/2021 - ]

for Manual Tilt and Manual Telescopic Steering Column: Refer to DISASSEMBLY [11/2021 - 03/2023]

Pre-procedure1

1. Disconnect the D61 steering lock ECU (steering lock actuator with ECU assembly) connector.
2. Disconnect the D58 certification ECU (smart key ECU assembly) connector.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D61-3 (IGE) - D58-24 (SLR+)	Always	Below 1 Ω
   D61-3 (IGE) or D58-24 (SLR+) - Other terminals and body ground	Always	10 kΩ or higher

   NOTE:

   Check for deformation and corrosion of the connector case and terminals.

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [11/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR