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DTC Description
 
 
DTC DETECTION LOGIC
DTC No. M.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
B1A71-11 Rear luggage right woofer out
(Rear luggage right woofer out)
Diagnosis conditionWhen ignition switch is ON
Signal (terminal)Sound signal (between BOSE speaker amp. and subwoofer RH)
ThresholdShort to ground circuit
Diagnosis delay time30 seconds or more
 
 
POSSIBLE CAUSE
  • Subwoofer RH circuit is malfunction
  • Subwoofer
 
 
FAIL-SAFE
No sound from subwoofer RH.
 
 
CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With M.U.T.-III SE
  1. Turn ignition switch ON.
  2. Turn ignition switch OFF and wait for 4 minutes.
  3. Turn ignition switch ON and wait at least 1 minute or more.
  4. Select “Self Diagnostic Result” mode of “Audio amp.” using M.U.T.-III SE.
  5. Check DTC.
Is DTC B1A71-11 detected?
Proceed to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END