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• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Ignition Voltage | P0650 | P0650 | - | - |
MIL Control | P0650/MIL ON | P0650 | P0650 | - |
The malfunction indicator lamp (MIL) illuminates to inform the driver that an emission system fault has occurred and the engine control system requires service. Ignition voltage is supplied directly to the MIL and, when the emission system fault occurs, the engine control module (ECM) turns the MIL ON by grounding the MIL control circuit. Under normal operating conditions, the MIL should be ON only when the vehicle is ON and the engine is OFF.
• | The vehicle is ON or the engine is running. |
• | Ignition voltage is greater than 11 V. |
• | The DTC runs continuously when the above conditions are met. |
The ECM detects that the commanded state of the MIL driver and the actual state of the control circuit do not match for greater than 5 s.
DTC P0650 is a Type B DTC, with no MIL request.
DTC P0650 is a Type B DTC, with no MIL request.
If the condition is intermittent, move the related harnesses and connectors with the Vehicle in Service Mode, and with the engine running while monitoring the scan tool MIL control circuit status parameters. The MIL control circuit status parameters will change from OK or Not Run to Malfunction if there is a condition with the circuit or a connection.
Hybrid Modes of Operation Description
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
• | MIL Control Circuit Low Voltage Test Status |
• | MIL Control Circuit Open Test Status |
• | MIL Control Circuit High Voltage Test Status |
Each parameter should display OK or Not Run. |
• | MIL Control Circuit Low Voltage Test Status |
• | MIL Control Circuit Open Test Status |
• | MIL Control Circuit High Voltage Test Status |
Each parameter should display OK or Not Run. |
⇒ | If the P16 instrument cluster indicators are not illuminated, test the ignition circuit terminal 31 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. |
⇒ | If the MIL is illuminated, test the control circuit terminal 52 X1 for a short to ground. If the circuit tests normal, replace the P16 instrument cluster. |
⇒ | If the MIL does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 engine control module. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for ECM replacement, setup, and programming |
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