Spark

DTC P0650

The malfunction indicator lamp (MIL) is located on the instrument panel cluster. Ignition voltage is supplied directly to the MIL. The engine control module (ECM) turns the MIL ON by grounding the MIL control circuit. There should be a steady MIL with the ignition ON and the engine OFF.

The MIL informs the driver that an emission system fault has occurred and that the engine control system requires service. The engine control module (ECM) monitors the MIL control circuit for conditions that are incorrect for the commanded states of the MIL.

P0650 (Without FX3)

P0650 (FX3)

The ECM detects a short circuit to voltage, a short circuit to ground, or an open/high resistance on the MIL control circuit.

DTC P0650 is a Type E DTC.

DTC P0650 is a Type E DTC.

Schematic Reference

Engine Controls Schematics : Siemens ECM - LPG with LCP → Siemens ECM - Gas without FX3 or LCP → Delphi ECM - FX3

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.

1. Ignition ON, command the MIL ON and OFF with a scan tool. The MIL should turn ON and OFF.
2. Verify that the DTC P0650 is not set.
3. 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.

1. Ignition ON, verify that the P16 Instrument Cluster warning indicators are illuminated.

⇒	If the P16 Instrument Cluster indicators are not illuminated, refer to Symptoms - Displays and Gauges

2. Ignition OFF, disconnect the harness connector at the K20 ECM.
3. Ignition ON, verify the MIL does not illuminate.

⇒	If the MIL illuminates, test the MIL control circuit for a short circuit to ground. If the circuit tests normal, replace the P16 Instrument Cluster.

4. Ignition ON, verify the MIL illuminates with a 3A fused jumper wire between the MIL control circuit terminal below and ground.

•	MIL control circuit terminal 39 (Without FX3)

•	MIL control circuit terminal 92 (FX3)

⇒	If the MIL does not illuminate, test the MIL control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the bulb/P16 Instrument Cluster.

5. If all circuits test normal, replace the K20 ECM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.