Vauxhall Workshop Service and Repair Manuals

DTC P200A

Diagnostic Instructions

DTC Descriptor

Diagnostic Fault Information

Circuit/System Description

The position of the swirl flaps is controlled by the engine control module (ECM). The ECM controls the inlet 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 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 valve.

Conditions for Running the DTC

Engine is running.

Conditions for Setting the DTC

The ECM detects an overtemperature of the output driver from the inlet manifold runner control solenoid valve.

Action Taken When the DTC Sets

DTCs P200A is a Type A DTC.

Conditions for Clearing the DTC

DTCs P200A 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 Intake Manifold Runner 95% to 5% with a scan tool. Observe the Inlet 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 Inlet Manifold Runner Control 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 Inlet Manifold Runner 95% to 5% and back 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.

⇒	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.

5. If all circuits test normal, replace the Q21 Inlet Manifold Runner Control Solenoid Valve.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for ECM replacement, setup and programming