DTC P2004

Variable tumble shutter valve stuck open

DETECTION CONDITION

• PCM monitors mass variable tumble shutter valve position using variable tumble shutter valve switch. If PCM turns the variable tumble solenoid valve on but variable tumble shutter valve position still remain open (variable tumble shutter valve switch off), PCM determines that variable tumble shutter valve has been stuck open.

Diagnostic support note

• This is a continuous monitor (CCM).

• MIL illuminates if PCM detects above malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for the same malfunction has been stored in PCM.

• PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.

• FREEZE FRAME DATA is available.

• DTC is stored in PCM memory.

POSSIBLE CAUSE

• Variable tumble shutter valve actuator malfunction (stuck open)

• Misconnected or pulled out vacuum hose

• Variable tumble solenoid valve malfunction

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

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

• Open circuit in wiring between variable tumble shutter valve switch terminal A and PCM terminal 2AE

• Short to power in wiring between variable tumble shutter valve switch terminal A and PCM terminal 2AE

• PCM malfunction

STEP

INSPECTION

ACTION

1

• Has FREEZE FRAME DATA been recorded?

Yes

Go to the next step.

No

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

2

• 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

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

• Drive vehicle under following conditions:

• Engine coolant temperature is below 63 °C {145 °F}.

• Engine speed: below 3,750 rpm

• Throttle opening angle is below as followings

• Engine speed below 1,500 rpm: above 35%

• Engine speed between 1,500—2,500 rpm: between 25—35%

• Engine speed above 2,500: below 25%

• Is PENDING CODE for this DTC present?

Yes

Go to the next step.

No

Intermittent concern exists. Go to INTERMITTENT CONCERN TROUBLESHOOTING procedure.

(See INTERMITTENT CONCERN TROUBLESHOOTING [LF].)

4

• Verify stored DTCs using the M–MDS.

• Is DTC P2088 or P2089 present?

Yes

Go to appropriate DTC troubleshooting procedures.

No

Go to the next step.

5

• Perform “VARIABLE TUMBLE SOLENOID VALVE INSPECTION”.

  (See VARIABLE TUMBLE SOLENOID VALVE INSPECTION [LF].)

• Is variable tumble solenoid valve normal?

Yes

Go to the next step.

No

Replace variable tumble control solenoid valve, then go to Step 13.

6

• Perform “VARIABLE TUMBLE SHUTTER VALVE ACTUATOR INSPECTION”.

  (See VARIABLE TUMBLE SHUTTER VALVE SWITCH INSPECTION [LF].)

• Is variable tumble shutter valve actuator normal?

Yes

Go to the next step.

No

Replace Intake manifold, then go to Step 13.

7

• Perform “VARIABLE TUMBLE SHUTTER VALVE SWITCH INSPECTION”.

  (See VARIABLE TUMBLE SHUTTER VALVE SWITCH INSPECTION [LF].)

• Is variable tumble shutter valve switch normal?

Yes

Go to the next step.

No

Replace intake manifold, then go to Step 13.

8

• Verify that the vacuum hoses are connected properly.

  (See INTAKE-AIR SYSTEM VACUUM HOSE ROUTING DIAGRAM [LF].)

• Are vacuum hoses connected properly?

Yes

Go to the next step.

No

Connect the vacuum hoses properly, then go to the next step.

9

• Turn ignition switch to OFF.

• Disconnect the variable tumble solenoid valve connector and variable tumble shutter valve switch connector.

• 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 13.

No

Go to the next step.

10

• Turn ignition switch to OFF.

• Disconnect PCM connector.

• 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 13.

No

Go to the next step.

11

• Inspect continuity between the following terminal:

• Variable tumble solenoid valve terminal B (wiring harness-side) and PCM terminal 2I (wiring harness-side).

• Variable tumble shutter valve switch terminal A (wiring harness-side) and PCM terminal 2AE (wiring harness-side).

• Is there continuity?

Yes

Go to the next step.

No

Repair or replace harness for open circuit, then go to Step 13.

12

• Disconnect the variable tumble solenoid valve connector and variable tumble shutter valve switch connector.

• Turn ignition switch to ON (Engine off).

• Measure voltage between the following terminal and body ground.

• PCM terminal 2I (wiring harness-side).

• PCM terminal 2AE (wiring harness-side).

• Is voltage B+?

Yes

Repair or replace harness for short to power supply, then go to the next step.

No

Go to the next step.

13

• Make sure to reconnect all disconnected connectors.

• Start engine.

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

• Start engine.

• Drive vehicle under following conditions:

• Engine coolant temperature is below 63 °C {145 °F}.

• Engine speed: below 3,750 rpm

• Throttle opening angle is below as followings

• Engine speed below 1,500 rpm: above 35%

• Engine speed between 1,500—2,500 rpm: between 25–35 %

• Engine speed above 2,500: below 25 %

• Is PENDING CODE for this DTC present?

Yes

Replace PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [LF].)

No

Go to the next step.

14

• Perform the “After Repair Procedure”.

  (See AFTER REPAIR PROCEDURE [LF].)

• Is any DTC present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [LF].)

No

Troubleshooting completed.