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DTC Description
 
 
DTC DETECTION LOGIC
DTC No. M.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
B1311‐12Rear LH speaker
(Rear left speaker)
Diagnosis conditionWhen ignition switch is ON.
Signal (terminal)Sound signal (AV control unit and rear door speaker LH)
ThresholdShort to power supply circuit
Diagnosis delay time1 second or more
 
 
POSSIBLE CAUSE
  • Rear door speaker LH circuit
  • Rear door speaker LH
 
 
FAIL-SAFE
No sound from rear door speaker LH.
 
 
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 at least 4 minutes or more.
  3. Turn ignition switch ON and wait at least 1 minute or more.
  4. Select “Self Diagnostic Result” mode of “MULTI AV” using M.U.T.-III SE.
  5. Check DTC.
Is DTC “B1311‐12” detected?
Proceed to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident
-2Confirmation after repair: INSPECTION END