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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen items (Trouble diagnosis content)DTC detection condition
B273B-87REAR SENSOR POWER
(Rear sensor power)
Diagnosis conditionWhen electric motor switch is ON
Signal (terminal)Rear sensor power supply
ThresholdConnection error is detected between sonar control unit and each sonar sensor.
Diagnosis delay time4 seconds or more
 
 
POSSIBLE CAUSE
  • Harness or connector (Rear sensor power supply circuit)
  • Sonar control unit
 
 
FAIL-SAFE
Stop the obstacle detection function
 
 
CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With M.U.T.-III SE
  1. Turn electric motor switch ON.
  2. Turn electric motor switch OFF and wait at least 30 seconds.
  3. Turn electric motor switch ON and wait at least 30 seconds or more.
  4. Select “Diagnostic Trouble Code” mode of “SONAR” using M.U.T.-III SE.
  5. Check the DTC.
Is DTC “B273B-87” detected?
Refer to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END