DTC B1ACA-71: Front Right Speaker Cable Actuator Stuck [12/2022 - ]: Procedure

1. Confirm the problem symptoms and proceed to the respective link.

   Result

   Result	Proceed to
   No sound is output from the front No. 1 speaker assembly RH or front No. 3 speaker assembly RH	A
   No sound is output from the front No. 2 speaker assembly RH	B

Result: 

B 

See step  9

Result: 

A 

See step  2

Pre-procedure1

• Disconnect the G54 stereo component amplifier assembly connector.
• Disconnect the E1 front No. 1 speaker assembly RH connector.
• Disconnect the D88 front No. 3 speaker assembly RH connector.
• Disconnect the D72 DCM (telematics transceiver) connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  G54-15 (FR+) - D72-1 (SPI+)	Always	Below 1 Ω	Ω
  G54-30 (FR-) - D72-2 (SPI-)	Always	Below 1 Ω	Ω
  D72-3 (SPO+) - D88-4 (TWR+)	Always	Below 1 Ω	Ω
  D72-4 (SPO-) - D88-2 (TWR-)	Always	Below 1 Ω	Ω
  D88-3 (+) - E1-2 (+)	Always	Below 1 Ω	Ω
  D88-1 (-) - E1-1 (-)	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

Pre-procedure1

• Remove the DCM (telematics transceiver).

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Component without harness connected (DCM [Telematics Transceiver])

  HINT: 

  Refer to REMOVAL [12/2022 - 12/2023] , or refer to REMOVAL [12/2023 - ]

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  3 (SPO+) - 1 (SPI+)	Always	Below 1 Ω	Ω
  4 (SPO-) - 2 (SPI-)	Always	Below 1 Ω	Ω
  1 (SPI+) - 2 (SPI-)	Always	10 kΩ or higher	kΩ
  3 (SPO+) - 4 (SPO-)	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [12/2022 - 12/2023]  , or refer to  REMOVAL [12/2023 - ] 

Result: 

OK 

See step  4

Refer to INSPECTION [11/2020 - ]

Result

Result: 

NG 

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY RH. Refer to  REMOVAL [11/2020 - ] 

Result: 

OK 

See step  5

1. Replace the front No. 3 speaker assembly RH with a new or known good one.

   HINT: 

   Refer to REMOVAL [11/2020 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Clear the DTCs.

   Body Electrical > Navigation System > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. In accordance with the display of the GTS, perform Speaker Line Electricity Check.

   Body Electrical > Navigation System > Utility 

   Tester Display
   Speaker Line Electricity Check

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

1. Check for DTCs and proceed to the following step.

   Body Electrical > Navigation System > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   B1ACA-71 is output	B

Result: 

A 

END (FRONT NO. 3 SPEAKER ASSEMBLY RH IS DEFECTIVE) 

Result: 

B 

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [12/2022 - ] 

Pre-procedure1

• Disconnect the G54 stereo component amplifier assembly connector.
• Disconnect the D82 front No. 2 speaker assembly RH connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  G54-6 (TWR+) - D82-2 (+)	Always	Below 1 Ω	Ω
  G54-21 (TWR-) - D82-1 (-)	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  10

Refer to INSPECTION [11/2020 - ]

Result

Result: 

NG 

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY RH. Refer to  REMOVAL [11/2020 - ] 

Result: 

OK 

See step  11

1. Clear the DTCs.

   Body Electrical > Navigation System > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  12

1. In accordance with the display of the GTS, perform a speaker line electricity check.

   Body Electrical > Navigation System > Utility 

   Tester Display
   Speaker Line Electricity Check

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  13

1. Check for DTCs and proceed to the following step.

   Body Electrical > Navigation System > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   B1ACA-71 is output	B

Result: 

A 

END 

Result: 

B 

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [12/2022 - ]