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2008 - MX-5 - Engine

DTC P2405 [LF]



DTC P2405

EVAP system leak detection pump sense circuit low input

DETECTION CONDITION

  • The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. If the current is lower than the specification while the PCM obtains the reference current value, the PCM determines EVAP system leak detection pump orifice has a malfunction.

    Diagnostic support note
  • This is a intermittent 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 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.

POSSIBLE CAUSE

  • EVAP system leak detection pump orifice fallen off

  • EVAP system leak detection pump motor malfunction

  • PCM malfunction


Diagnostic procedure

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
  • Has FREEZE FRAME DATA been recorded?

Yes

Go to the next step.

No

Record the FREEZE FRAME DATA on the repair order, then go to the next step.

2

VERIFY RELATED REPAIR INFORMATION AVAILABILITY
  • Verify related Service Bulletins and/or on-line repair information availability.

  • Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

  • If the vehicle is not repaired, go to the next step.

No

Go to the next step.

3

VERIFY TROUBLESHOOTING OF DTC P2405 COMPLETED
  • Make sure to reconnect all disconnected connectors.

  • Clear the DTC from the PCM memory using the M-MDS.

  • Perform the evaporative emission test using the M-MDS.

    (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [LF].)

  • Is the same DTC present?

    NOTE:

    • If evaporative system test function is not available, perform the following procedure:

    • Is the PENDING CODE the same as the DTC present?

Yes

Replace the PCM, then go to the next step.

(SeePCM REMOVAL/INSTALLATION [LF].)

No

Go to the next step.

4

VERIFY AFTER REPAIR PROCEDURE

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [LF].)

No

Troubleshooting completed.




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