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DTC Description
 
 
DTC DETECTION LOGIC
DTC No.M.U.T.-III SE screen items
(Trouble diagnosis content)
DTC detection condition
B12A3-72Fuel pump Off circuit
(Fuel pump Off circuit)
[ACTUATOR STUCK OPEN]Diagnosis conditionWhen ignition switch is ON
Signal (terminal)CPU monitors the status at the contact and excitation coil circuits of the fuel pump relay inside it
ThresholdThe fuel pump relay OFF is detected
Diagnosis delay time1 second or more
 
 
POSSIBLE CAUSE
  • Fusible link
  • Fuse
  • Harness or connectors (Battery power supply circuit is open or shorted to ground)
  • IPDM E/R
 
 
FAIL-SAFE
—
 
 
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With M.U.T.-III SE
  1. Ignition switch OFF.
  2. Ignition switch ON.
  3. Check “Self Diagnostic Result” of “IPDM E/R” using M.U.T.-III SE.
Is DTC detected?
Refer to Diagnosis Procedure.
-1 To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2 Confirmation after repair: INSPECTION END