The ignition is ON.
Conditions for Setting the DTC
P0C57 or P0C61
Circuit voltage less than 0.5 volts.
P0C58 or P0C62
Circuit voltage greater than 3.0 volts.
Action Taken When the DTC Sets
* DTCs P0C57, P0C58, P0C61 and P0C62 are Type A DTCs.
* The hybrid powertrain control module (HPCM) commands the battery energy control module (BECM) to open the high voltage contactor
relays.
Conditions for Clearing the DTC
DTCs P0C57, P0C58, P0C61 and P0C62 are Type A DTCs.
Diagnostic Aids
* The drive motor generator position sensor circuits operate at very low current. Extreme care must be taken when probing terminals and
manipulating harnesses.
* The sensor circuit loops are twisted pair with each pair covered in a foil shield. The shield circuits outside of the transmission are grounded to
a stud on the drive motor generator power inverter module (PIM) assembly.
* Ensure the drive motor generator position sensor harness shield circuits are properly grounded prior to testing.
Reference Information
Schematic Reference
Hybrid Controls Schematics ()
Connector End View Reference
* Component Connector End Views (See: Diagrams/Connector Views)
* Inline Harness Connector End Views (See: Power and Ground Distribution/Multiple Junction Connector/Diagrams)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Special Tools
DT-48493 Jumper Harness
Circuit/System Testing
Note: The drive motor generator position sensor circuits require proper circuit integrity for correct system operation. Just a few ohms of
additional circuit resistance may cause position sensor signal degradation.
* Always inspect position sensor signal connectors for proper terminal contact.
* All diagnostic connections must be made with the approved test probes to prevent the creation of poor terminal contact.
* Connectors that contain position sensor signal circuits must always be clean and dry prior to mating. Foreign material or moisture within
the connector may cause sensor signal degradation.
1. Ignition OFF, disconnect PIM X1 connector.
2. Using the Position Sensor Specification table specifications listed below, test the position sensor resistance at the PIM X1 circuits as
indicated. Also test each circuit for a short to ground.
锟斤拷If any of the circuits are not within specification, continue with testing.
