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2008 - MX-5 - Engine

DTC P2009 [LF]



DTC P2009

Variable tumble solenoid valve circuit low input

DETECTION CONDITION

  • The PCM monitors variable tumble solenoid valve control signal. If the PCM turns variable tumble solenoid valve off but voltage still remains low, the PCM determines that variable tumble solenoid valve circuit has a malfunction.

    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 first drive cycle.

  • FREEZE FRAME DATA is available.

  • Are any DTCs is stored in the PCM memory.

POSSIBLE CAUSE

  • Poor connection of connectors at PCM and/or variable tumble solenoid valve

  • Short to ground in wiring harness between variable tumble solenoid valve terminal B and PCM terminal 2I

  • Open circuit in wiring harness between main relay and variable tumble solenoid valve terminal A

  • Open circuit in wiring harness between variable tumble solenoid valve terminal B and PCM terminal 2I

  • Variable tumble solenoid valve malfunction

  • PCM malfunction


Diagnostic procedure

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED
  • Has FREEZE FRAME DATA been recorded?

Yes

Go to the next step.

No

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

2

VERIFY RELATED REPAIR INFORMATION AVAILABILITY
  • Check for 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

INSPECT VARIABLE TUMBLE SOLENOID VALVE CONNECTOR FOR POOR CONNECTION
  • Turn the ignition switch off.

  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

  • Is there any malfunction?

Yes

Repair or replace the terminal, then go to Step 9.

No

Go to the next step.

4

INSPECT VARIABLE TUMBLE SOLENOID VALVE

Yes

Go to the next step.

No

Replace the variable tumble solenoid valve, then go to Step 9.

5

INSPECT VARIABLE TUMBLE SOLENOID VALVE POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT
  • Disconnect the variable tumble solenoid valve connector.

  • Turn the ignition switch to the ON position (Engine off).

  • Measure the voltage between variable tumble solenoid valve terminal A (wiring harness-side) and body ground.

  • Is the voltage B+?

Yes

Go to the next step.

No

Repair or replace the wiring harness for an open circuit, then go to Step 9.

6

INSPECT PCM CONNECTOR FOR POOR CONNECTION
  • Turn the ignition switch off.

  • Disconnect the PCM connector.

  • Inspect for poor connection at PCM terminal 2I. (such as damaged/pulled-out pins, corrosion).

  • Is there any malfunction?

Yes

Repair the terminal, then go to Step 9.

No

Go to the next step.

7

INSPECT VARIABLE TUMBLE SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND
  • Inspect for continuity between variable tumble solenoid valve terminal B (wiring harness-side) and body ground.

  • Is there continuity?

Yes

Repair or replace the wiring harness for short to ground, then go to Step 9.

No

Go to the next step.

8

INSPECT VARIABLE TUMBLE SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT
  • Inspect for continuity between variable tumble solenoid valve terminal B (wiring harness-side) and PCM terminal 2I (wiring harness-side).

  • Is there continuity?

Yes

Go to the next step.

No

Repair or replace the wiring harness for an open circuit, then go to the next step.

9

VERIFY TROUBLESHOOTING OF DTC P2009 COMPLETED
  • Make sure to reconnect all disconnected connectors.

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

  • Start the engine.

  • Is the PENDING CODE for this DTC present?

Yes

Replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [LF].)

No

Go to the next step.

10

VERIFY AFTER REPAIR PROCEDURE

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [LF].)

No

Troubleshooting completed.




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