Hybrid Powertrain Control Module 2 Scan Tool Information

Charge History Scan Tool Data Parameters

Parameter	Expected Value	Definition
Operating Conditions: The Charge History parameters capture the conditions present during the last five charge events. A charge event is recorded whenever the charge coupler is fully mated to the charge receptacle. History 1 is the most recent charge event. The Charge History parameters are cleared only during an HPCM2 replacement and/or programming event.
Charge History (1 thru 5) - 110V AC Input	Varies	This parameter displays if the 110V charge cord was active during this charge event.
Charge History (1 thru 5) - 240V AC Input	Varies	This parameter displays if the 240V charge cord was active during this charge event.
Charge History (1 thru 5) - Autostart Inhibit	Varies	This parameter displays if the charge event was interrupted because of an engine start. An engine start could be commanded via remote start, key crank, cold battery, etc.
Charge History (1 thru 5) - Battery Charger Temperature Too High	No	This parameter displays if the charge event was interrupted because the Battery Charger internal temperature exceeded a set value. Refer to DTC P1EF3-P1EF5.
Charge History (1 thru 5) - Charging Cord Error	No	This parameter displays if the vehicle battery charger is requesting utility power but AC input voltage is not present. Refer to DTC P1EE6.
Charge History (1 thru 5) - Contactor Open	No	This parameter displays if the charging related contactor(s) were commanded open, interrupting the charge event.
Charge History (1 thru 5) - Full Charge	Varies	This parameter displays if the high voltage battery was completely charged during this charge event.
Charge History (1 thru 5) - High Severity Fault	No	This parameter displays if high voltage battery DTCs such as cell overvoltage had set, inhibiting the charge event.
Charge History (1 thru 5) - Hybrid/EV Battery Pack Protection	No	This parameter displays if high voltage battery DTCs had set, inhibiting the charge event.
Charge History (1 thru 5) - Hybrid/EV Battery Pack Temperature Too Low	No	This parameter displays if the charge event was interrupted because the high voltage battery temperature was too low to allow charging.
Charge History (1 thru 5) - Low Severity Fault	No	This parameter displays if high voltage battery DTCs had set, interrupting the charge event.
Charge History (1 thru 5) - Low Voltage - Battery Voltage Low Before Charge	No	This parameter displays if the 12 V accessory battery voltage was too low prior to the charging event being enabled.
Charge History (1 thru 5) - Low Voltage - Battery Voltage Low During Charge	No	This parameter displays if the 12V accessory battery voltage was too low during the charge event.
Charge History (1 thru 5) - Maximum Cell Voltage	No	This parameter displays if the maximum voltage for one of the high voltage battery cells was exceeded, interrupting the charge event.
Charge History (1 thru 5) - Maximum Charge Time Exceeded	No	This parameter displays if the maximum charge time was exceeded during this charge event. Maximum charge time varies by vehicle model with 40 hours being the shortest maximum allowed charge time.
Charge History (1 thru 5) - Medium Severity Fault	No	This parameter displays if high voltage battery DTCs had set, interrupting the charge event.
Charge History (1 thru 5) - Multiple Plug-In Events Within 30 Seconds	No	This parameter displays if that several charge cord connections/disconnections were observed at the charger receptacle in a 30 second time frame.
Charge History (1 thru 5) - Multiple Plug-In Events Within 5 Minutes	No	This parameter displays if that several charge cord connections/disconnections were observed at the charger receptacle in a 5 minute time frame.
Charge History (1 thru 5) - Time of Day Inhibit	Varies	This parameter displays if programmable charging (time of day/rate based) had delayed charging at some point during this event.
Charge History (1 thru 5) - Unplugged at Vehicle	Varies	This parameter displays if the charge event was interrupted because the charge cord was disconnected at the vehicle charge receptacle.
Charge History (1 thru 5) - Unplugged at Wall	Varies	This parameter displays if the charge event was interrupted when AC voltage was lost to the charge cord. Most likely this occurred by either the charge cord plug being removed from the household receptacle or a household utility circuit breaker tripping open.
Charge History (1 thru 5) - Utility Company Inhibit	Varies	This parameter displays if smart charging had delayed charging at some point during this charge event due to a utility company commanded transmitted via Onstar.
Charge History (1 thru 5) - Vehicle Conditions Not Correct	Yes	This parameter displays if the required vehicle conditions to allow charging such as gear selector in Park, valid charger pilot signal have been met.

Hybrid Powertrain Control Module 2 Scan Tool Data Parameters

Parameter	System State	Expected Value	Description
Operating Conditions: Vehicle in Run
14 Volt Power Module Fan Feedback	-	45-55%	This parameter displays the internal diagnostic status of the 14V power module cooling fan. A duty cycle of 45 to 55% This parameter displays no internal fan faults detected.
14V Power Module Fan	-	Varies	This parameter displays commanded airflow in percent for the 14V power module cooling fan.
14V Power Module Fan Speed	-	Varies	This parameter displays the actual speed of the 14V power module cooling fan motor shaft.
14V Power Module Power Available From Hybrid/EV Battery Pack	-	Varies	This parameter displays the amount of electrical power in kW the Hybrid/EV battery pack can supply to the 14V Power Module.
A/C Compressor Power Limit	-	No	This parameter displays if the electric power available to the Electric A/C compressor motor is at its limit.
A/C Compressor Speed	-	Varies	This parameter displays the actual speed of the electric A/C compressor motor shaft.
A/C High Side Pressure Sensor	Compressor OFF	Equal to low side	This parameter displays the pressure of the A/C system high side pressure sensor.
A/C High Side Pressure Sensor	Compressor ON	Higher than low side
A/C Low Side Pressure Sensor	Compressor OFF	Equal to high side	This parameter displays the pressure of the A/C system low side pressure sensor.
A/C Low Side Pressure Sensor	Compressor ON	Lower than high side
A/C Low Side Pressure Sensor	-	Varies	This parameter displays the voltage of the A/C system low side pressure sensor.
Airbag Deployed	-	No	This parameter displays if the contactors are commanded open because an air bag has deployed.
Ambient Air Temperature	-	Varies	This parameter displays the temperature of the air surrounding the vehicle.
Average Hybrid/EV Battery Pack Temperature	-	Varies	This parameter displays the average temperature for all of the Hybrid/EV battery pack module sensors.
Battery Charger High Output	-	Varies	This parameter displays the current in amps supplied by the Battery Charger Control Module to the high voltage battery.
Battery Charger High Output	-	Varies	This parameter displays the power in kW supplied by the Battery Charger Control Module to the Hybrid/EV battery pack.
Battery Charger High Output	-	Varies	This parameter displays the voltage supplied by the Battery Charger Control Module to the high voltage battery.
Battery Charger High Voltage Energy Output During Last Charge	-	Varies	This parameter displays the energy (kWh) the battery charger has delivered into the high voltage Hybrid/EV battery pack during the last charge event.
Battery Charger High Voltage Power Output Available	-	Varies	This parameter displays the maximum battery charger power output in kW available for Hybrid/EV battery pack charging.
Battery Charger Input	-	Varies	This parameter displays the current in amps monitored by the Battery Charger Control Module on the charge cord.
Battery Charger Input	-	Varies	This parameter displays the voltage monitored by the Battery Charger Control Module on the charge cord.
Battery Charger Input 120V AC	-	Varies	This parameter displays the battery charging system is connected to 120V AC.
Battery Charger Input 240V AC	-	Varies	This parameter displays the battery charging system is connected to 240V AC.
Battery Charger Low Output	-	Varies	This parameter displays the current in amps supplied by the Battery Charger Control Module to the 12V accessory battery.
Battery Charger Low Output	-	Varies	This parameter displays the power in kW supplied by the Battery Charger Control Module to the 12V accessory battery.
Battery Charger Low Output	-	Varies	This parameter displays the voltage supplied by the Battery Charger Control Module to the 12V accessory battery.
Battery Charger Power Input Available	-	Varies	This parameter displays the maximum power in kW available at the battery charger plug receptacle coming from the wall outlet/utility supply.
Battery Charger Temperature	-	Varies	This parameter displays the temperature of the Battery Charger Control Module internal temperature sensor.
Battery Charger Total Power Output Available	-	Varies	This parameter displays the maximum battery charger power output in watts available for low voltage battery and hybrid battery pack charging
Battery Charging System	-	OK	This parameter displays if the components that make up the charge system are allowing charging.
Battery Charging System High Voltage Interlock Circuit	HV Enabled	Energized	The high voltage interlock circuit routes through several components and connectors to determine if access to high voltage components is being attempted. This parameter displays if the high voltage interlock circuit is currently monitoring for high voltage system integrity.
Battery Charging System High Voltage Interlock Circuit	HV Not Enabled	De-energized
Battery Charging System High Voltage Interlock Circuit Status	HV Enabled	Pass	The high voltage interlock circuit routes through several components and connectors to determine if access to high voltage components is being attempted. This parameter displays the results of the control modules diagnostic test of the high voltage interlock circuit.
	HV Not Enabled	Unknown
Battery Charging System Indicator Status	-	Varies	This parameter displays the status of the charging system indicator (LEDs/Bulbs/Icons) visible to the operator of the vehicle.
Battery Charging System Isolation Test Status	-	Passed	Vehicles equipped with high voltage storage and propulsion capability are designed with both the positive and negative high voltage circuits isolated from the vehicle chassis. This parameter displays the results obtained when the Hybrid/EV battery pack last performed an isolation diagnostic test on the battery charging system.
Battery Charging System Negative Contactor Command	In Charge Mode	Closed	This parameter displays the Hybrid Powertrain Control Module 2 Commanded state of the contactor (relay) on (-) side of the battery charging system.
Battery Charging System Negative Contactor Command	Not in Charge Mode	Open
Battery Charging System Operating Conditions	-	OK	This parameter displays if the battery charging system operating conditions are allowing charging.
Battery Charging System Positive Contactor Command	In Charge Mode	Closed	This parameter displays the Hybrid Powertrain Control Module 2 Commanded state of the contactor (relay) on (+) side of the battery charging system.
Battery Charging System Positive Contactor Command	Not in Charge Mode	Open
Battery Charging System Receptacle Switch	Charge Cord Installed	Active	This parameter displays the state of the switch at the receptacle where the charge cord plugs in.
Battery Charging System Receptacle Switch	Charge cord unplugged	Inactive
Battery Charging System Sensors	-	OK	This parameter displays if the battery charging system sensors are allowing charging.
Charge Port Door	-	Varies	This parameter displays the state of the switch at the door where the charge cord plugs in.
Cooling Fan Motor Command	-	Varies	This parameter displays the commanded air flow in percent of the radiator coolant fan.
Crash Event Detected	-	No	This parameter displays if the contactors are commanded open due to a vehicle crash event being detected.
Discharging	-	No	This parameter displays if the system is inhibiting contactor closure because the high voltage system is currently in the process of discharging the capacitors on the high voltage bus. Discharging usually occurs immediately following opening of the high voltage contactors.
Distance Since DTC Cleared	-	Varies	This parameter displays the distance in miles or kilometers since OBD diagnostic trouble codes (DTCs) have been cleared using the service tool.
Distance With MIL On	-	Varies	This parameter displays the accumulated distance in miles or kilometers driven with the malfunction indicator lamp (MIL) on.
Fuel Door Indicator	Fuel Door Closed	Off	This parameter displays the Status of the Fuel Door indicator (LED, bulb, icon) visible to the operator of the vehicle.
Fuel Door Indicator	Fuel Door Open	On
Fuel Door Lock	Fuel system vent not complete	Locked	This parameter displays the state of the lock mechanism of the fuel door.
Fuel Door Lock	Fuel system vented	Unlocked
Fuel Door Position	-	Varies	This parameter displays the state of the fuel door position switch.
Fuel Tank Pressure	-	Varies	This parameter displays the pressure/vacuum inside the fuel tank. A negative value indicates a vacuum, while a positive value indicates a pressure.
High Voltage Interlock Circuit	-	No	This parameter displays if the contactors are commanded open because the high voltage interlock circuit is detected open or faulted.
High Voltage System Interlock Circuit	HV Enabled	Energized	The high voltage interlock circuit routes through several components and connectors to determine if access to high voltage components is being attempted. This parameter displays if the high voltage interlock circuit is currently monitoring for high voltage system integrity.
High Voltage System Interlock Circuit	HV Not Enabled	De-Energized
High Voltage System Interlock Circuit Status	HV Enabled	Pass	The high voltage interlock circuit routes through several components and connectors to determine if access to high voltage components is being attempted. This parameter displays the results of the control modules diagnostic test of the high voltage interlock circuit.
High Voltage System Interlock Circuit Status	HV Not Enabled	Unknown
High Voltage System Isolation Complete Test Mode	-	Varies	Vehicles equipped with high voltage storage and propulsion capability are designed with both the positive and negative high voltage circuits isolated from the vehicle chassis. This parameter displays what state the high voltage contactors were commanded when the Hybrid/EV battery pack isolation diagnostic test completed.
High Voltage System Isolation Test Status	HV Enabled	Not Running	Vehicles equipped with high voltage storage and propulsion capability are designed with both the positive and negative high voltage circuits isolated from the vehicle chassis. This parameter displays the status of the Hybrid/EV battery pack isolation diagnostic test. This test may run at accessory wake up or immediately following key-off. The status will clear whenever DTCs are cleared.
High Voltage System Isolation Test Status	HV Not Enabled	Running/Complete
Hood Position	-	Varies	This parameter displays the position of the hood as determined by the hood latch switch.
Hybrid/EV Battery Pack Charging Limit	-	Varies	This parameter displays the maximum charge power limit in watts of the Hybrid/EV battery pack based on current conditions such as temperature and state of charge.
Hybrid/EV Battery Pack Charging Request	-	Varies	This parameter displays the request to charge the Hybrid/EV Battery pack.
Hybrid/EV Battery Pack Coolant Control Solenoid Valve Command	-	Varies	This parameter displays the commanded position for the solenoid valve that controls the coolant flow through the Hybrid/EV battery pack cooling system. This position determines the percentage of coolant allowed to flow through the refrigerant/coolant exchanger (chiller).
Hybrid/EV Battery Pack Coolant Control Solenoid Valve Feedback	-	Varies	This parameter displays the actual position for the solenoid valve that controls the coolant flow through the Hybrid/EV battery pack cooling system. This position determines the percentage of coolant allowed to flow through the refrigerant/coolant exchanger (chiller).
Hybrid/EV Battery Pack Coolant Control Solenoid Valve Learn Status	-	Complete	This parameter displays the status of the learn test for the solenoid valve that controls the coolant flow through the Hybrid/EV battery pack.
Hybrid/EV Battery Pack Coolant Control Valve Position	-	Varies	This parameter displays the percentage of coolant flow allowed to both flow through and bypass the refrigerant/coolant exchanger (chiller).
Hybrid/EV Battery Pack Coolant Level Switch	-	Varies	This parameter displays the voltage signal from the coolant level switch contained in the Hybrid/EV battery pack coolant surge tank.
Hybrid/EV Battery Pack Coolant Pump Command	-	Varies	This parameter displays the commanded percentage coolant flow for the Hybrid/EV battery pack coolant pump.
Hybrid/EV Battery Pack Coolant Pump Feedback	-	45-55%	This parameter displays the internal diagnostic status of the Hybrid/EV battery pack coolant pump. A duty cycle of 45 to 55% indicates no internal pump faults detected.
Hybrid/EV Battery Pack Coolant Pump Speed	-	Varies	This parameter displays the actual speed of the Hybrid/EV battery pack coolant pump motor shaft.
Hybrid/EV Battery Pack Coolant Temperature Sensor 1	-	Varies	Two sensors monitor the temperature of coolant circulating through the Hybrid/EV battery pack. This parameter displays Sensor 1 which monitors temperature of the coolant entering the battery pack.
Hybrid/EV Battery Pack Coolant Temperature Sensor 2	-	Varies	Two sensors monitor the temperature of coolant circulating through the Hybrid/EV battery pack. This parameter displays Sensor 2 which monitors temperature of the coolant exiting the battery pack.
Hybrid/EV Battery Pack Current	-	Varies	This parameter displays the amount of current in amps flowing in or out of the Hybrid/EV battery pack.
Hybrid/EV Battery Pack Heater Power Command	-	Varies	This parameter displays the electric power in percent commanded by the Hybrid Powertrain Control Module 2 to the Hybrid/EV battery pack coolant heater in order to warm the battery pack.
Hybrid/EV Battery Pack Heater Power Command	-	Varies	This parameter displays the electric power in kW commanded by the Hybrid Powertrain Control Module 2 to the Hybrid/EV battery pack coolant heater in order to warm the battery pack.
Hybrid/EV Battery Pack Heater Power Limited	-	No	This parameter displays if the electric power available to the Hybrid/EV battery pack coolant heater is at its limit.
Hybrid/EV Battery Pack Heater Power Request	-	Varies	This parameter displays the electric power in kW requested by the hybrid powertrain control module 2 to the Hybrid/EV battery pack coolant heater in order to warm the battery pack.
Hybrid/EV Battery Pack Isolation Test Status	-	Passed	Vehicles equipped with high voltage storage and propulsion capability are designed with both the positive and negative high voltage circuits isolated from the vehicle chassis. This parameter displays the results obtained when the Hybrid/EV battery pack last performed its internal isolation diagnostic test. This test may run at accessory wake up or immediately following key-off. The status will be cleared whenever DTCs are cleared.
Hybrid/EV Battery Pack Maximum Voltage	-	Varies	This parameter displays the total Hybrid/EV battery pack maximum voltage measured during the current ignition cycle.
Hybrid/EV Battery Pack Minimum State of Charge Limit	-	Varies	This parameter displays the minimum permissible Hybrid/EV battery pack state of charge in percent. The Hybrid/EV system will not discharge the battery pack below this limit.
Hybrid/EV Battery Pack Minimum Voltage	-	Varies	This parameter displays the total Hybrid/EV battery pack minimum voltage measured during the current ignition cycle.
Hybrid/EV Battery Pack Multifunction Contactor Command	-	Varies	This parameter displays the Hybrid Powertrain Control Module 2 Commanded state of the contactor (relay) that supplies (+) power to the precharge resistor, the battery heater and the Charging contactor within the Hybrid/EV Battery pack.
Hybrid/EV Battery Pack Negative Contactor Command	HV Enabled	Closed	This parameter displays the Hybrid Powertrain Control Module 2 Commanded state of the contactor (relay) on the (-) side of the Hybrid/EV Battery pack.
Hybrid/EV Battery Pack Negative Contactor Command	HV Not Enabled	Open
Hybrid/EV Battery Pack Positive Contactor Command	HV Enabled	Closed	This parameter displays the Hybrid Powertrain Control Module 2 Commanded state of the contactor (relay) on the (+) side of the Hybrid/EV Battery pack.
Hybrid/EV Battery Pack Positive Contactor Command	HV Not Enabled	Open
Hybrid/EV Battery Pack Precharge Transistor Command	HV Enable Initiated	Closed	This parameter displays the Hybrid Powertrain Control Module 2 Commanded state of the operation of the Hybrid/EV Battery pack precharge transistor. Precharge occurs in the milliseconds prior to closing the main (+) bus contactor. By routing the high voltage through a resistor, precharge prevents voltage spikes from occurring whenever high voltage is enabled.
Hybrid/EV Battery Pack Precharge Transistor Command	HV Fully Enabled or HV Not Enabled	Open
Hybrid/EV Battery Pack Resistance	-	Varies	This parameter displays the Hybrid/EV battery pack resistance value in ohms.
Hybrid/EV Battery Pack State of Charge	-	Varies	This parameter displays the percentage available capacity remaining in a Hybrid/EV battery pack.
Hybrid/EV Battery Pack State of Charge Gauge	-	Varies	This parameter displays the percentage Hybrid/EV battery pack state of charge as indicated to the operator of the vehicle.
Hybrid/EV Battery Pack Voltage	-	Varies	This parameter displays the electrical potential of the Hybrid/EV battery pack as currently monitored.
Hybrid/EV Battery System Precharge Current Too High	-	No	Precharge occurs in the milliseconds prior to closing the main (+) bus contactor. By routing the high voltage through a resistor, precharge prevents voltage spikes from occurring whenever high voltage is enabled. This parameter displays if the contactors are commanded open because of excessive Precharge current.
Hybrid/EV Battery System Precharge Time Short	-	No	Precharge occurs in the milliseconds prior to closing the main (+) bus contactor. By routing high voltage through a resistor, precharge prevents voltage spikes from occurring whenever high voltage is enabled. The time required to precharge is based upon the system voltage and capacitance. This parameter displays if the contactors are commanded open because the time required to precharge was too fast.
Hybrid/EV Battery System Precharge Time Too Long	-	No	Precharge occurs in the milliseconds prior to closing the main (+) bus contactor. By routing the high voltage through a resistor, precharge prevents voltage spikes from occurring whenever high voltage is enabled. The time required to precharge is based upon the system voltage and capacitance. This parameter displays if the contactors are commanded open because the time required to precharge was too slow.
Hybrid/EV Battery Temperature Sensor with Maximum Value	-	Varies	The Hybrid/EV battery pack contains many individual battery cells or modules. This parameter displays the index-number of the battery module that is reporting the maximum temperature value.
Hybrid/EV Battery Temperature Sensor with Minimum Value	-	Varies	The Hybrid/EV battery pack contains many individual battery cells or modules. This parameter displays the index-number of the battery module that is reporting the minimum temperature value.
Hybrid/EV Battery Voltage Sensor with Maximum Value	-	Varies	The Hybrid/EV battery pack contains many individual battery cells or modules. This parameter displays the index-number of the battery module voltage sensor that is reporting the highest voltage.
Hybrid/EV Battery Voltage Sensor with Minimum Value	-	Varies	The Hybrid/EV battery pack contains many individual battery cells or modules. This parameter displays the index-number of the battery module voltage sensor that is reporting the lowest voltage.
Hybrid/EV Battery Voltage Sensors Average	-	Varies	The Hybrid/EV battery pack contains many individual hybrid battery cells or modules. This parameter displays the average voltage measured at all of the cells/modules.
Hybrid/EV Electronics Coolant Pump Command	-	Varies	This parameter displays the percent commanded coolant flow for the Hybrid/EV electronics coolant pump.
Hybrid/EV Electronics Coolant Pump Feedback	-	45-55%	This parameter displays the internal diagnostic status for the Hybrid/EV electronics coolant pump. A duty cycle of 45 to 55% indicates no internal pump faults detected.
Hybrid/EV Electronics Coolant Pump Speed	-	Varies	This parameter displays the actual speed of the Hybrid/EV electronics coolant pump motor shaft.
Hybrid/EV Electronics Coolant Temperature	-	Varies	This parameter displays the temperature of the coolant within the hybrid electronics cooling system.
Hybrid/EV Powertrain Control Module Request	-	No	This parameter displays if the hybrid/EV powertrain control module (1) is requesting the contactors to be open.
Hybrid/EV/EV Battery Capacity	-	Varies	This parameter displays the capacity of the hybrid/EV battery pack expressed in engineering data form.
Ignition 1 Signal	-	Varies	This parameter displays the voltage monitored at the control module terminal connected to the Ignition 1 circuit.
Isolation Test Resistance	-	Varies	Vehicles equipped with high voltage storage and propulsion capability are designed with both the positive and negative high voltage circuits isolated from the vehicle chassis. This parameter displays the amount of isolation observed when the Hybrid/EV battery pack last performed its isolation diagnostic test. This test may run at accessory wake up or immediately following key-off. The value will be set to zero whenever DTCs are cleared.
Manual Service Disconnect Fuse Life Remaining	-	Varies	WARNING: The manual service disconnect contains a non-serviceable high voltage fuse with a monitored life span. To prevent fuse failure, take the following actions: Always install a NEW manual service disconnect when fuse life indicates 0% and perform the scan tool manual service disconnect fuse life reset function. Always install a NEW manual service disconnect when replacing the hybrid powertrain control module 2 and perform the scan tool fuse life reset function. Never perform the scan tool fuse life reset function without also installing a NEW manual service disconnect. Never install a manual service disconnect from one vehicle into another. If you cannot verify the origin of a manual service disconnect, install a NEW manual service disconnect and perform the scan tool fuse life reset function. Failure to perform the actions may result in the high voltage fuse opening without warning, resulting in stalling leading to possible component damage or personal injury. This parameter displays the percentage of life remaining in the high voltage fuse. Refer to DTC P0E2F .
Maximum Hybrid/EV Battery Module Temperature	-	Varies	The Hybrid/EV battery pack contains many individual battery cells or modules. This parameter displays the temperature of the battery module reporting the highest temperature.
Maximum Hybrid/EV Battery Module Voltage	-	Varies	The Hybrid/EV battery pack contains many individual hybrid battery cells or modules. This parameter displays the maximum voltage measured at any of the cells/modules.
Minimum Hybrid/EV Battery Module Temperature	-	Varies	The Hybrid/EV battery pack contains many individual battery cells or modules. This parameter displays the temperature of the battery module reporting the lowest temperature.
Minimum Hybrid/EV Battery Module Voltage	-	Varies	The Hybrid/EV battery pack contains many individual hybrid battery cells or modules. This parameter displays the minimum voltage measured at any of the cells/modules.
Overtemperature	-	No	This parameter displays if the system is commanding contactors open to protect them from overheating. The contactors will overheat if cycled too many times within a short amount of time.
Passenger Compartment Heater Coolant Control Solenoid Valve Command	-	Varies	This parameter displays the commanded position for the solenoid valve that controls the coolant flow through the passenger compartment cooling system. This position determines the percentage of coolant allowed to flow through the heater core.
Passenger Compartment Heater Coolant Control Solenoid Valve Feedback	-	Varies	This parameter displays the actual position for the solenoid valve that controls the coolant flow through the passenger compartment cooling system. This position determines the percentage of coolant allowed to flow through the heater core.
Passenger Compartment Heater Coolant Control Solenoid Valve Learn Status	-	Learned	This parameter displays the status of the learn test for the solenoid valve that controls the coolant flow through the passenger compartment heater core.
Passenger Compartment Heater Power Limited	-	No	This parameter displays if the electric power available to the passenger compartment heater power is at its limit.
Power Delivered to Electric A/C Compressor from Hybrid Battery Pack	-	Varies	This parameter displays the electric power in kW commanded by the hybrid powertrain control module 2 to the A/C compressor in order for it to provide Hybrid/EV battery pack and/or passenger compartment cooling.
Power Delivered to Electric Passenger Compartment Heater from Hybrid/EV Battery Pack	-	Varies	This parameter displays the electric power in kW commanded by the hybrid powertrain control module 2 to the passenger compartment heater in order for it to provide heat.
Power Requested by Electric A/C Compressor from Hybrid/EV Battery Pack	-	Varies	This parameter displays the electric power in kW estimated by hybrid powertrain control module 2 necessary to provide Hybrid/EV battery pack and/or passenger compartment cooling.
Power Requested by Electric Passenger Compartment Heater from Hybrid/EV Battery Pack	-	Varies	This parameter displays the electric power in kW estimated by hybrid powertrain control module 2 necessary to provide passenger compartment heating.
Power Mode	-	Run	This parameter displays the status of the ignition switch.
Proximity Detection Circuit	-	Varies	The proximity detection circuit detects the presence of the drive motor battery charge cord. This parameter displays the voltage monitored on the detection circuit.
Refuel Request	-	Varies	This parameter displays if the module has initiated a refuel request.
Refuel Request Switch	-	Varies	This parameter displays the state of the fuel door open request switch.
Refuel System Status	-	Varies	This parameter displays the current state of the refuel system.
Refuel System Vent Requested	-	Varies	This parameter displays if the module has requested the refuel system to vent the fuel tank.
Refuel System Vented	-	Varies	This parameter displays if the refuel system has completed the fuel tank vent process.
Service Refuel System Indicator	-	Off	This parameter displays status of the Refuel system malfunction indicator (LED, bulb, icon) visible to the operator of the vehicle.
Shutdown Mode	-	No	Shutdown Mode is the semi-operational state while a control module is turning off. Shutdown mode allows time for house-keeping tasks such as writing data to stored memory. This parameter displays if the module is in the process of shutting down.
Stuck Open	-	No	This parameter displays the contactors are commanded open because the module has detected one or more of the high voltage contactors will not close.
Warm-Ups Since DTC Cleared	-	Varies	This parameter displays the number of OBD defined warm-up cycles since the last time codes were cleared with a scan tool or, when applicable, with a 12V battery disconnect. A warm-up cycle occurs after the propulsion system has been active for 1000 consecutive seconds with run/crank ignition active.

Hybrid Powertrain Control Module 2 Configuration/Reset Functions

Functions	Description
Fuel Economy Reset	This reset function is used to reset the learned Lifetime fuel economy displayed to the operator of the vehicle. The Lifetime fuel economy display will reset to the maximum limit.
Hybrid/EV Battery Pack Capacity Learn	This reset function is used to learn the hybrid/EV battery pack capacity whenever the HPCM2, the Hybrid/EV Battery pack or individual hybrid/EV battery sections are replaced. Refer to the Hybrid/EV Battery Pack Capacity Learn procedure in Hybrid/EV Energy Storage.
Hybrid/EV Battery Pack Charging Adaptive Learn Reset	This reset function is used to reset the learned adaptive charging limits.
Hybrid/EV Battery Pack Coolant Control Solenoid Valve Learn	This reset function is used to learn the end-stop positions of the coolant valve.
Hybrid/EV Battery Pack Data Reset	This reset function is used to reset certain engineering data parameters.
Manual Service Disconnect Fuse Life Reset	WARNING: The manual service disconnect contains a non-serviceable high voltage fuse with a monitored life span. To prevent fuse failure, take the following actions: Always install a NEW manual service disconnect when fuse life indicates 0% and perform the scan tool manual service disconnect fuse life reset function. Always install a NEW manual service disconnect when replacing the hybrid powertrain control module 2 and perform the scan tool fuse life reset function. Never perform the scan tool fuse life reset function without also installing a NEW manual service disconnect. Never install a manual service disconnect from one vehicle into another. If you cannot verify the origin of a manual service disconnect, install a NEW manual service disconnect and perform the scan tool fuse life reset function. Failure to perform the actions may result in the high voltage fuse opening without warning, resulting in stalling leading to possible component damage or personal injury. This reset function is used to learn the high voltage fuse life to 100%.
Passenger Compartment Heater Coolant Control Solenoid Valve Learn	This reset function is used to learn the end-stop positions of the coolant valve.

Hybrid Powertrain Control Module 2 Scan Tool Output Controls

Output Control	Description
14V Power Module Fan	This output control is used to vary the 14V Module cooling fan speed between 20% and 90%.
Battery Charging System Negative Contactor	This output control is used to energize the high voltage contactors for diagnostic purposes. Refer to the applicable high voltage contactor diagnostic trouble code for setup and usage instructions.
Battery Charging System Positive Contactor	This output control is used to energize the high voltage contactors for diagnostic purposes. Refer to the applicable high voltage contactor diagnostic trouble code for setup and usage instructions.
Charge Port Door	This output control is used to energize the KR119 Charge Port Door Relay which in turn energizes the M80 Charge Port Door Actuator. Applies only to vehicles with electronic Charge Port Door release.
Check High Voltage System Related DTCs	The hybrid powertrain control module 2 monitors for high voltage safety conditions. If these conditions are present the module will set DTCs and prevent high voltage enabling. This output control identifies if the related DTCs have passed.
Clear Secured High Voltage DTCs	This output control is used to clear a latched high voltage (HV) lockout state. The hybrid powertrain control modules 1 and 2 monitor for high voltage safety conditions such as airbag deploy events and certain HV system faults. If these conditions are present either module may set a DTC and prevent HV enabling until after this Output Control is exercised. NOTE: Performing a scan tool DTC Clear may clear the diagnostic that set the HV lockout state, but will not reset the lockout. Always refer to Clear Secured High Voltage DTCs procedure in Hybrid/Energy Storage service information for the proper sequence of procedures required to reset a HV lockout state.
Cooling Fan Motor	This output control is used to vary the coolant radiator cooling fan motor between 10% and 90%.
Fuel Fill Door Lock	This output control is used to energize the M97 Fuel Fill Door Lock Actuator which in turn Locks and Unlocks the fuel fill door.
Hybrid/EV Battery Contactors	This output control is used to energize the high voltage contactors for diagnostic purposes. Refer to the applicable high voltage contactor diagnostic trouble code for setup and usage instructions.
Hybrid/EV Battery Negative Contactor	This output control is used to energize the high voltage contactors for diagnostic purposes. Refer to the applicable high voltage contactor diagnostic trouble code for setup and usage instructions.
Hybrid/EV Battery Pack Active Cooling	This output control is used to enable Active Cooling of the Hybrid/EV Battery Pack. The electric A/C compressor will be turned ON and the coolant control valve will be set to the chiller position allowing the air conditioning refrigerant to cool the hybrid/EV battery coolant.
Hybrid/EV Battery Pack Coolant Control Solenoid Valve	This output control is used to energize the Q65 Hybrid/EV Battery Pack Coolant Control Valve. The valve has one fluid input port and three fluid output ports, identified as Radiator, Bypass, and Chiller. Bypass does not allow coolant to pass through either heat exchanger. The valve can be moved to several intermediate positions between Bypass and Chiller, for blended cooling of the hybrid/EV battery pack coolant for optimum efficiency.
Hybrid/EV Battery Pack Coolant Pump	This output control is used to vary the coolant pump speed between 20% and 90%.
Hybrid/EV Battery Pack Coolant Pump Bleed Procedure	This output control is used with the Drive Motor Battery Cooling System Draining and Filling procedure and the GE-47716 Van-N-Fill Coolant Refill Tool or its equivalent regional tool.
Hybrid/EV Battery Pack Heater Power	This output control is used to energize the Battery Pack Heater. The output control is limited to 10%. Refer to DTC P1EC6.
Hybrid/EV Battery Pack Isolation Test	Vehicles equipped with high voltage storage and propulsion capability are designed with both the positive and negative high voltage circuits isolated from the vehicle chassis. This output control commands the hybrid powertrain control module 2 to measure the isolation of the hybrid/EV battery pack The following control limits apply: All high voltage contactors are open The vehicle power mode is OFF Depress and hold the brake pedal while the vehicle power mode is OFF to wake up the modules prior to enabling this output control.
Hybrid/EV Battery Pack Precharge Transistor	This output control is used to energize the high voltage contactors for diagnostic purposes. Refer to the applicable high voltage contactor diagnostic trouble code for setup and usage instructions.
Hybrid/EV Battery Positive Contactor	This output control is used to energize the high voltage contactors for diagnostic purposes. Refer to the applicable high voltage contactor diagnostic trouble code for setup and usage instructions.
Hybrid/EV Electronics Coolant Pump	This output control is used to vary the coolant pump speed between 20% and 90%.
Hybrid/EV Multifunction Contactor	This output control is used to energize the high voltage contactors for diagnostic purposes. Refer to the applicable high voltage contactor diagnostic trouble code for setup and usage instructions.
Passenger Compartment Heater Coolant Control Solenoid Valve	This output control is used to energize the Q66 Passenger Compartment Heater Coolant Control Valve. The passenger compartment heater coolant control valve has two positions. When commanded in bypass mode, as when the engine is OFF, the passenger compartment heater coolant control valve separates the engine and the cabin heater control module coolant loops to prevent heat generated by the cabin heater control module for passenger compartment heating from dissipating into the engine coolant loop. After the engine starts up and is warmed up, excess engine heat is allowed to assist the cabin heater control module in heating the passenger compartment, the passenger compartment heater coolant control valve is commanded to link mode and the two coolant loops are connected.
Vent Refuel System	This vehicles sealed fuel system features a normally sealed fuel tank and canister to reduce canister loading during daily cycles. Unlike the EVAP diagnostic hardware from conventional EVAP systems, this vent solenoid valve is normally closed. This keeps the fuel vapor sealed in the fuel tank and canister. The vent solenoid valve is only open for canister purge, refueling, fuel tank pressure (FTP) sensor correlation or leak check with the EVAP leak detection pump. This output control overrides the EVAP system control of the vent solenoid.