DTC B1AB1-71: Rear Subwoofer Speaker Circuit Actuator Stuck [02/2024 - ]: Procedure

1. Clear the DTCs.

   Body Electrical > Active Noise Control > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Check for DTCs.

   Body Electrical > Active Noise Control > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2024 - ]

Result: 

B 

See step  3

Pre-procedure1

1. Disconnect the L38 stereo component equalizer assembly connector.
2. Disconnect the U33 rear No. 3 speaker assembly connector.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L38-10 (RR+) - U33-2 (WF1+)	Always	Below 1 Ω
   L38-25 (RR-) - U33-1 (WF1-)	Always	Below 1 Ω
   L38-10 (RR+) - Body ground	Always	10 kΩ or higher
   L38-25 (RR-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

Refer to INSPECTION [02/2024 - ]

Result

Result: 

OK 

REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY 

Refer to REMOVAL [02/2024 - ]

Result: 

NG 

REPLACE REAR NO. 3 SPEAKER ASSEMBLY 

Refer to REMOVAL [02/2024 - ]