Diagnostic Instructions

DTC Descriptors

DTC P2015 20: Intake Manifold Runner Control Valve Control Circuit Malfunction

DTC P2015 21: Intake Manifold Runner Control Valve Control Circuit Malfunction

DTC P2015 22: Intake Manifold Runner Control Valve Control Circuit Malfunction

DTC P2015 23: Intake Manifold Runner Control Valve Control Circuit Malfunction

DTC P2015 24: Intake Manifold Runner Control Valve Control Circuit Malfunction

DTC P2015 25: Intake Manifold Runner Control Valve Control Circuit Malfunction

DTC P2015 26: Intake Manifold Runner Control Valve Control Circuit Malfunction

DTC P2015 27: Intake Manifold Runner Control Valve Control Circuit Malfunction

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Signal	P2016 08	P2017 04	P2017 04	P2015 20, P2015 21, P2015 22, P2015 23, P2015 24, P2015 25, P2015 26, P2015 27
Low Reference	--	P2017 04	P2017 04	--

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

The ECM detects a wrong frequency from the intake manifold runner control solenoid valve

Action Taken When the DTC Sets

DTC P2015 is a Type A DTC.

Conditions for Clearing the DTC

DTC P2015 is a Type A DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

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 Q21 Intake Manifold Runner Control (IMRC) Solenoid Valve ON and OFF with a scan tool. Observe the 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. Test for less than 5 Ω between the low reference circuit terminal 2 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module (ECM).

3. Disconnect the X2 harness connector at the K20 Engine Control Module (ECM).
4. Ignition ON, test for less than 0.3 V between the signal circuit at the Q21 Intake Manifold Runner Control (IMRC) Solenoid Valve terminal 5 and ground.

⇒	If greater than the specified range, test the signal circuit for a short to Voltage. If the circuit tests normal, replace the K20 Engine Control Module (ECM).

5. Ignition OFF, test for greater than 500 kΩ between the signal circuit terminal 5 and ground.

⇒	If less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module (ECM).

6. Test for less than 5 Ω between the signal circuit at the Q21 Intake Manifold Runner Control (IMRC) Solenoid Valve terminal 5 and the signal circuit at the K20 Engine Control Module (ECM) terminal 43 (X2).

⇒	If greater than the specified range, test the signal circuit for an open circuit. If the circuit tests normal, replace the K20 Engine Control Module (ECM).

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

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.