DTC B2291-7E: Sub Battery System Output Power Relay "D" Actuator Stuck On [08/2023 - ]: Procedure

1. Check for DTCs.

   Body Electrical > Sub Battery System > Trouble Codes 

   Result

   Result	Proceed to
   B2291-7E is output	A
   B2291-7E is not output	B

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] 

Result: 

A 

See step  2

Pre-procedure1

• Disconnect the H191 integrated capacitor (integration control supply) connector.

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

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  H191-20 (BUA2) - Body ground	Ignition switch off	Below 5 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE INTEGRATED CAPACITOR (INTEGRATION CONTROL SUPPLY). Refer to  REMOVAL [08/2023 - ] 

Result: 

NG 

See step  3

Pre-procedure1

• Disconnect the D34 front door lock with motor assembly LH connector.

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

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  H191-20 (BUA2) - Body ground	Ignition switch off	Below 1 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH. Refer to  REMOVAL [08/2023 - ] 

Result: 

NG 

See step  4

Pre-procedure1

• Disconnect the D15 front door lock with motor assembly RH connector.

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

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  H191-20 (BUA2) - Body ground	Ignition switch off	Below 1 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH. Refer to  REMOVAL [08/2023 - ] 

Result: 

NG 

See step  5

Pre-procedure1

• Disconnect the E16 rear door lock with motor assembly LH connector.

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

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  H191-20 (BUA2) - Body ground	Ignition switch off	Below 1 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY LH. Refer to  REMOVAL [08/2023 - ] 

Result: 

NG 

See step  6

Pre-procedure1

• Disconnect the E6 rear door lock with motor assembly RH connector.

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

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  H191-20 (BUA2) - Body ground	Ignition switch off	Below 1 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY RH. Refer to  REMOVAL [08/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR