P0650
DTC P0650 (LUW)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructionsprovides an overview of each diagnostic category.
DTC Descriptor
DTC P0650
- Malfunction Indicator Lamp (MIL) Control Circuit
Diagnostic Fault Information
Circuit/System Description
The malfunction indicator lamp (MIL) is located on the instrument panel cluster.
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.
Conditions for Running the DTC
* DTCs P0601, P0604, P0605, P0606, P0607, and P2610 are not set
* DTC P0650 runs continuously when the ignition is ON.
Conditions for Setting the DTC
* The ECM detects that the commanded state of the MIL driver and the actual state of the control circuit do not match for more than 1 s.
* Should a short circuit to B+ or an open circuit occur on the MIL control circuit, the MIL must be commanded ON for the DTC to set. A short circuit to ground on the MIL control circuit can be detected immediately by the ECM in the commanded OFF state.
Action Taken When the DTC Sets
DTC P0650 is a Type B DTC, with no MIL request.
Conditions for Clearing the DTC
DTC P0650 is a Type B DTC, with no MIL request.
Reference Information
Schematic Reference
* Engine Controls Schematics (LUW) [1][2]Electrical Diagrams
* Instrument Cluster Schematics Instrument Cluster Schematics
Connector End View Reference
Component Connector End Views Sunshade - Left (D6I)
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Control Module Referencesfor scan tool information
Circuit/System Verification
1. Ignition ON, the MIL should turn ON and OFF when commanded with a scan tool.
2. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions you observed from the freeze frame/failure records data.
Circuit/System Testing
1. Ignition ON, verify that the P16 Instrument Cluster warning indicators are illuminated.
• If the P16 Instrument Cluster indicators are not illuminated, test the ignition circuit terminal 31 X1 for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, replace the P16 Instrument Cluster.
2. Ignition OFF, disconnect connector X1 at the K20 Engine Control Module.
3. Ignition ON, verify that the MIL is not illuminated.
• If the MIL is illuminated, inspect the MIL control circuit terminal 1 for a short to ground. If the circuit tests normal, replace the P16 Instrument Cluster.
4. Ignition ON, verify that the MIL illuminates with a 3 A fused jumper between the K20 Engine Control Module MIL control circuit terminal 1 and ground
• If the MIL does not illuminate, test the MIL control circuit terminal 1 for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure
* Instrument Cluster Replacement Service and Repair
* Control Module References Control Module Referencesfor ECM replacement, programming, and setup