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DTC Description
 
 
DTC DETECTION LOGIC
DTC No.M.U.T.-III SE screen itemsDTC Detection Condition
(Trouble diagnosis content)[Malfunction type]
B12A4–81BATTERY CURRENT SENSOR
(Battery current sensor)
[INVALID SERIAL DATA RECEIVED]Diagnosis conditionWhen ignition switch is ON.
Signal (terminal)LIN (BAT CURRENT SEN)
Threshold12V battery current sensor and IPDM E/R cannot communicate with LIN communication signal.
Diagnosis delay time2 seconds or more
 
 
POSSIBLE CAUSE
  • 12V battery terminal is not connected
  • Harness or connectors
  • 12V battery current sensor (With 12V battery temperature sensor)
  • IPDM E/R
 
 
FAIL-SAFE
Fix the power generation command value to 14.3 V.
 
 
DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
  1. Start engine and wait for 10 seconds or more.
  2. Perform “Self Diagnostic Result” mode of “IPDM E/R” using M.U.T.-III SE.
Is the inspection result normal?
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END
Proceed to Diagnosis Procedure.