For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• | Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category.

### DTC Descriptors

DTC P2009 00: Intake Manifold Runner Control Valve Control Circuit Low Voltage
DTC P2010 00: Intake Manifold Runner Control Valve Control Circuit High Voltage

### Diagnostic Fault Information

Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance
--- | --- | --- | --- | ---
Ignition | P2008 00 | P2008 00 | -- | --
Control | P2009 00 | P2008 00 | P2010 00 | P200A 00

### Circuit/System Description

The position of the swirlflaps is controlled by the engine control module (ECM). The ECM controls the intake manifold runner control solenoid valve to create a swirl in the combustion chamber to get a homogeneous diesel air mixture. The ECM will vary the intake manifold runner control solenoid valve referring to the barometric pressure and the mass air flow. The ECM uses a pulse width modulation on the control circuit to control the intake manifold runner control solenoid valve.

### Conditions for Running the DTC

Engine is running

### Conditions for Setting the DTC

#### P2009

The ECM detects the intake manifold runner control solenoid valve control circuit is shorted to ground for more than 1 s.

#### P2010

The ECM detects the intake manifold runner control solenoid valve control circuit is shorted to voltage for more than 1 s.

### Action Taken When the DTC Sets

DTCs P2009 or P2010 are Type A DTCs.

### Conditions for Clearing the DTC

DTCs P2009 or P2010 are Type A DTCs.

### Reference Information

#### Schematic Reference

Engine Controls Schematics

#### Connector End View Reference

Component Connector End Views

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

1. Ignition ON, command the Intake Manifold Runner ON and OFF with a scan tool. Observe the scan tool Intake Manifold Runner Control Valve Feedback Signal parameter.
2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

### Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the Q21 Intake Manifold Runner Control (IMRC) Solenoid Valve.
2. Ignition ON, connect a test lamp between the ignition circuit terminal 6 and ground.

⇒ | If the test lamp is OFF, test the ignition circuit for a short to ground or an open/high resistance.

3. Connect a test lamp between the control circuit terminal 1 and the ignition circuit terminal 6.
4. Command the Intake Manifold Runner ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.

⇒ | If the test lamp is always ON, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module (ECM).

⇒ | If the test lamp is always OFF, test the control circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module (ECM).

5. If all circuits test normal, test or replace the Q21 Intake Manifold Runner Control (IMRC) Solenoid Valve.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Link x intake Manifold Runner replacement

• | Control Module References for ECM replacement, setup, and programming