Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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• Is the same DTC present?
VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR
PROCEDURE".
(See AFTER REPAIR PROCEDURE [Z6].)
• Are any DTCs present?
Go to the applicable DTC inspection.
(See DTC TABLE [Z6].)
DTC troubleshooting completed.
DTC P0125 [Z6]
B3E010200100W11
Insufficient coolant temperature for closed loop fuel control
• The PCM monitors the ECT after cold engine start. If the ECT does not reach the
specification in a certain period, the PCM determines that the engine coolant
temperature for closed loop fuel control is insufficient.
Diagnostic support note
• This is a continuous monitor (CCM).
• The MIL illuminates if the PCM detects the above malfunction condition in two
consecutive drive cycles or in one drive cycle while the DTC for the same malfunction
has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition
during the first drive cycle.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.
• ECT sensor malfunction
• MAF sensor malfunction
• PCM malfunction
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
• Has FREEZE FRAME DATA been
recorded?
Record the FREEZE FRAME DATA on the repair
order, then go to the next step.
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
• Verify related service repair information
availability.
Perform repair or diagnosis according to the
available repair information.
• If the vehicle is not repaired, go to the next
step.