2010 Cadillac Truck Escalade RWD V8-6.2L Page 1108
resistance changes with battery temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the
lower the resistance of the sensor. The drive motor generator battery control module uses the battery temperature sensors to control the battery
cooling fan operation.
The hybrid powertrain control module monitors the average battery pack temperature over serial data. When the average drive motor generator
battery temperature exceeds the calibrated temperature the hybrid powertrain control module will set DTC P0A7E and send a command to the drive
motor generator battery control module to open the high voltage contactors.
Conditions for Running the DTC
* DTC P0A9C, P0A9D, P0A9E, P0AC6, P0AC7, P0AC8, P0ACB, P0ACC, P0ACD, P0AE9, P0AEA, or P0AEB is not set.
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0A7E
The hybrid powertrain control module detects an average battery temperature greater than 73掳C (163.4掳F) for 5 seconds.
P1ABE
One of the following conditions exists:
* The drive motor generator battery control module detects an average battery temperature increase of 2掳C (35.6掳F) in a 20 second event for 3
consecutive events totaling 60 seconds.
* The drive motor generator battery control module detects 2 battery temperature sensors greater than 65掳C (149掳F) for 5 seconds.
* The drive motor generator battery control module detects any battery temperature sensor greater than 70掳C (158掳F).
Action Taken When the DTC Sets
P0A7E
* DTC P0A7E is a type C DTC.
* The hybrid powertrain control module commands the drive motor generator battery control module to open the high voltage contactors relays
when the vehicle speed is below 5 km/h (3 mph).
P1ABE
* DTC P1ABE is a type C DTC.
* The drive motor generator battery control module sends a message to the hybrid powertrain control module requesting the high voltage
contactors open. The hybrid powertrain control module will command the contactors relays open when the vehicle speed is less than 5 km/h
(3 mph).
Conditions for Clearing the DTC
DTCs P0A7E and P1ABE are type C DTCs.
Diagnostic Aids
* Battery temperatures can be affected by vehicle load, outside temperature and customer driving conditions. Test drive the vehicle, and
attempt to simulate the Freeze Frame/Failure Record conditions this DTC set under.
* Inspect for the following:
- Air inlet and outlet for blockage.
- Loose or poor connections at the drive motor generator battery control module temperature sensor module X3 harness connector.
- Damage to the drive motor generator battery control module temperature sensor module wiring harness.
- Damage to the fan or blades.
- Damage to the internal drive motor generator battery cooling air outlet duct seals.
* Test the resistance across each temperature sensor 5 V reference and low reference circuits. Refer to Temperature Versus Resistance ().
* If the hybrid batteries are at or above the temperature values for setting these DTCs, allow the hybrid batteries to cool down by letting the
vehicle stand at room temperature, this could take 4 to 8 hours.
* Use the scan tool output control to test the drive motor generator battery vent fan operation.
* Inspect the ground circuit for the drive motor generator battery vent fan relay.
* Inspect the drive motor generator battery vent fan relay connections.
* Refer to Generator Battery Temperature Sensor Location () for the proper locations of the four temperature sensors.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Showing posts with label the higher the resistance of the sensor. The higher the temperature. Show all posts
Showing posts with label the higher the resistance of the sensor. The higher the temperature. Show all posts
Saturday, May 23, 2020
Tuesday, May 19, 2020
2010 Cadillac Truck Escalade RWD V8-6.2L Page 1012
2010 Cadillac Truck Escalade RWD V8-6.2L Page 1012
resistance changes with temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the
resistance of the sensor. The drive motor generator battery control module (BECM) uses the air inlet and outlet temperature sensors to determine if
air is circulating through the drive motor generator battery assembly.
Conditions for Running the DTC
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0AAF and P0AB4
The hybrid battery pack air temperature sensor 1 or 2 is less than -40掳C (-40掳F).
P0AAE and P0AB3
The hybrid battery pack air temperature sensor 1 or 2 is greater than 95掳C (203掳F).
P0AAD
The hybrid battery cooling fan is ON and the difference between sensor 1 and 2 is greater than 10掳C (50掳F) difference for 9 seconds.
P0AB2
The hybrid battery cooling fan is ON and the outlet air temperature is greater than maximum hybrid battery temperature value by 10掳C (50掳F) for 9
seconds.
Action Taken When the DTC Sets
* DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
* The drive motor generator battery sends a message to the hybrid powertrain control module to reduce the power by 50 percent.
Conditions for Clearing the DTC
DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Drive Motor Generator Battery Cooling Description ()
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
resistance changes with temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the
resistance of the sensor. The drive motor generator battery control module (BECM) uses the air inlet and outlet temperature sensors to determine if
air is circulating through the drive motor generator battery assembly.
Conditions for Running the DTC
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0AAF and P0AB4
The hybrid battery pack air temperature sensor 1 or 2 is less than -40掳C (-40掳F).
P0AAE and P0AB3
The hybrid battery pack air temperature sensor 1 or 2 is greater than 95掳C (203掳F).
P0AAD
The hybrid battery cooling fan is ON and the difference between sensor 1 and 2 is greater than 10掳C (50掳F) difference for 9 seconds.
P0AB2
The hybrid battery cooling fan is ON and the outlet air temperature is greater than maximum hybrid battery temperature value by 10掳C (50掳F) for 9
seconds.
Action Taken When the DTC Sets
* DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
* The drive motor generator battery sends a message to the hybrid powertrain control module to reduce the power by 50 percent.
Conditions for Clearing the DTC
DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Drive Motor Generator Battery Cooling Description ()
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
Wednesday, November 6, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1209
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1209
resistance changes with battery temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the
lower the resistance of the sensor. The drive motor generator battery control module uses the battery temperature sensors to control the battery
cooling fan operation.
The hybrid powertrain control module monitors the average battery pack temperature over serial data. When the average drive motor generator
battery temperature exceeds the calibrated temperature the hybrid powertrain control module will set DTC P0A7E and send a command to the drive
motor generator battery control module to open the high voltage contactors.
Conditions for Running the DTC
* DTC P0A9C, P0A9D, P0A9E, P0AC6, P0AC7, P0AC8, P0ACB, P0ACC, P0ACD, P0AE9, P0AEA, or P0AEB is not set.
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0A7E
The hybrid powertrain control module detects an average battery temperature greater than 73掳C (163.4掳F) for 5 seconds.
P1ABE
One of the following conditions exists:
* The drive motor generator battery control module detects an average battery temperature increase of 2掳C (35.6掳F) in a 20 second event for 3
consecutive events totaling 60 seconds.
* The drive motor generator battery control module detects 2 battery temperature sensors greater than 65掳C (149掳F) for 5 seconds.
* The drive motor generator battery control module detects any battery temperature sensor greater than 70掳C (158掳F).
Action Taken When the DTC Sets
P0A7E
* DTC P0A7E is a type C DTC.
* The hybrid powertrain control module commands the drive motor generator battery control module to open the high voltage contactors relays
when the vehicle speed is below 5 km/h (3 mph).
P1ABE
* DTC P1ABE is a type C DTC.
* The drive motor generator battery control module sends a message to the hybrid powertrain control module requesting the high voltage
contactors open. The hybrid powertrain control module will command the contactors relays open when the vehicle speed is less than 5 km/h
(3 mph).
Conditions for Clearing the DTC
DTCs P0A7E and P1ABE are type C DTCs.
Diagnostic Aids
* Battery temperatures can be affected by vehicle load, outside temperature and customer driving conditions. Test drive the vehicle, and
attempt to simulate the Freeze Frame/Failure Record conditions this DTC set under.
* Inspect for the following:
- Air inlet and outlet for blockage.
- Loose or poor connections at the drive motor generator battery control module temperature sensor module X3 harness connector.
- Damage to the drive motor generator battery control module temperature sensor module wiring harness.
- Damage to the fan or blades.
- Damage to the internal drive motor generator battery cooling air outlet duct seals.
* Test the resistance across each temperature sensor 5 V reference and low reference circuits. Refer to Temperature Versus Resistance ().
* If the hybrid batteries are at or above the temperature values for setting these DTCs, allow the hybrid batteries to cool down by letting the
vehicle stand at room temperature, this could take 4 to 8 hours.
* Use the scan tool output control to test the drive motor generator battery vent fan operation.
* Inspect the ground circuit for the drive motor generator battery vent fan relay.
* Inspect the drive motor generator battery vent fan relay connections.
* Refer to Generator Battery Temperature Sensor Location () for the proper locations of the four temperature sensors.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
resistance changes with battery temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the
lower the resistance of the sensor. The drive motor generator battery control module uses the battery temperature sensors to control the battery
cooling fan operation.
The hybrid powertrain control module monitors the average battery pack temperature over serial data. When the average drive motor generator
battery temperature exceeds the calibrated temperature the hybrid powertrain control module will set DTC P0A7E and send a command to the drive
motor generator battery control module to open the high voltage contactors.
Conditions for Running the DTC
* DTC P0A9C, P0A9D, P0A9E, P0AC6, P0AC7, P0AC8, P0ACB, P0ACC, P0ACD, P0AE9, P0AEA, or P0AEB is not set.
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0A7E
The hybrid powertrain control module detects an average battery temperature greater than 73掳C (163.4掳F) for 5 seconds.
P1ABE
One of the following conditions exists:
* The drive motor generator battery control module detects an average battery temperature increase of 2掳C (35.6掳F) in a 20 second event for 3
consecutive events totaling 60 seconds.
* The drive motor generator battery control module detects 2 battery temperature sensors greater than 65掳C (149掳F) for 5 seconds.
* The drive motor generator battery control module detects any battery temperature sensor greater than 70掳C (158掳F).
Action Taken When the DTC Sets
P0A7E
* DTC P0A7E is a type C DTC.
* The hybrid powertrain control module commands the drive motor generator battery control module to open the high voltage contactors relays
when the vehicle speed is below 5 km/h (3 mph).
P1ABE
* DTC P1ABE is a type C DTC.
* The drive motor generator battery control module sends a message to the hybrid powertrain control module requesting the high voltage
contactors open. The hybrid powertrain control module will command the contactors relays open when the vehicle speed is less than 5 km/h
(3 mph).
Conditions for Clearing the DTC
DTCs P0A7E and P1ABE are type C DTCs.
Diagnostic Aids
* Battery temperatures can be affected by vehicle load, outside temperature and customer driving conditions. Test drive the vehicle, and
attempt to simulate the Freeze Frame/Failure Record conditions this DTC set under.
* Inspect for the following:
- Air inlet and outlet for blockage.
- Loose or poor connections at the drive motor generator battery control module temperature sensor module X3 harness connector.
- Damage to the drive motor generator battery control module temperature sensor module wiring harness.
- Damage to the fan or blades.
- Damage to the internal drive motor generator battery cooling air outlet duct seals.
* Test the resistance across each temperature sensor 5 V reference and low reference circuits. Refer to Temperature Versus Resistance ().
* If the hybrid batteries are at or above the temperature values for setting these DTCs, allow the hybrid batteries to cool down by letting the
vehicle stand at room temperature, this could take 4 to 8 hours.
* Use the scan tool output control to test the drive motor generator battery vent fan operation.
* Inspect the ground circuit for the drive motor generator battery vent fan relay.
* Inspect the drive motor generator battery vent fan relay connections.
* Refer to Generator Battery Temperature Sensor Location () for the proper locations of the four temperature sensors.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Monday, November 4, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1113
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1113
resistance changes with temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the
resistance of the sensor. The drive motor generator battery control module (BECM) uses the air inlet and outlet temperature sensors to determine if
air is circulating through the drive motor generator battery assembly.
Conditions for Running the DTC
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0AAF and P0AB4
The hybrid battery pack air temperature sensor 1 or 2 is less than -40掳C (-40掳F).
P0AAE and P0AB3
The hybrid battery pack air temperature sensor 1 or 2 is greater than 95掳C (203掳F).
P0AAD
The hybrid battery cooling fan is ON and the difference between sensor 1 and 2 is greater than 10掳C (50掳F) difference for 9 seconds.
P0AB2
The hybrid battery cooling fan is ON and the outlet air temperature is greater than maximum hybrid battery temperature value by 10掳C (50掳F) for 9
seconds.
Action Taken When the DTC Sets
* DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
* The drive motor generator battery sends a message to the hybrid powertrain control module to reduce the power by 50 percent.
Conditions for Clearing the DTC
DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Drive Motor Generator Battery Cooling Description ()
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
resistance changes with temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the
resistance of the sensor. The drive motor generator battery control module (BECM) uses the air inlet and outlet temperature sensors to determine if
air is circulating through the drive motor generator battery assembly.
Conditions for Running the DTC
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0AAF and P0AB4
The hybrid battery pack air temperature sensor 1 or 2 is less than -40掳C (-40掳F).
P0AAE and P0AB3
The hybrid battery pack air temperature sensor 1 or 2 is greater than 95掳C (203掳F).
P0AAD
The hybrid battery cooling fan is ON and the difference between sensor 1 and 2 is greater than 10掳C (50掳F) difference for 9 seconds.
P0AB2
The hybrid battery cooling fan is ON and the outlet air temperature is greater than maximum hybrid battery temperature value by 10掳C (50掳F) for 9
seconds.
Action Taken When the DTC Sets
* DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
* The drive motor generator battery sends a message to the hybrid powertrain control module to reduce the power by 50 percent.
Conditions for Clearing the DTC
DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Drive Motor Generator Battery Cooling Description ()
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
Saturday, October 26, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1209
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1209
resistance changes with battery temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the
lower the resistance of the sensor. The drive motor generator battery control module uses the battery temperature sensors to control the battery
cooling fan operation.
The hybrid powertrain control module monitors the average battery pack temperature over serial data. When the average drive motor generator
battery temperature exceeds the calibrated temperature the hybrid powertrain control module will set DTC P0A7E and send a command to the drive
motor generator battery control module to open the high voltage contactors.
Conditions for Running the DTC
* DTC P0A9C, P0A9D, P0A9E, P0AC6, P0AC7, P0AC8, P0ACB, P0ACC, P0ACD, P0AE9, P0AEA, or P0AEB is not set.
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0A7E
The hybrid powertrain control module detects an average battery temperature greater than 73锟斤拷C (163.4锟斤拷F) for 5 seconds.
P1ABE
One of the following conditions exists:
* The drive motor generator battery control module detects an average battery temperature increase of 2锟斤拷C (35.6锟斤拷F) in a 20 second event for 3
consecutive events totaling 60 seconds.
* The drive motor generator battery control module detects 2 battery temperature sensors greater than 65锟斤拷C (149锟斤拷F) for 5 seconds.
* The drive motor generator battery control module detects any battery temperature sensor greater than 70锟斤拷C (158锟斤拷F).
Action Taken When the DTC Sets
P0A7E
* DTC P0A7E is a type C DTC.
* The hybrid powertrain control module commands the drive motor generator battery control module to open the high voltage contactors relays
when the vehicle speed is below 5 km/h (3 mph).
P1ABE
* DTC P1ABE is a type C DTC.
* The drive motor generator battery control module sends a message to the hybrid powertrain control module requesting the high voltage
contactors open. The hybrid powertrain control module will command the contactors relays open when the vehicle speed is less than 5 km/h
(3 mph).
Conditions for Clearing the DTC
DTCs P0A7E and P1ABE are type C DTCs.
Diagnostic Aids
* Battery temperatures can be affected by vehicle load, outside temperature and customer driving conditions. Test drive the vehicle, and
attempt to simulate the Freeze Frame/Failure Record conditions this DTC set under.
* Inspect for the following:
- Air inlet and outlet for blockage.
- Loose or poor connections at the drive motor generator battery control module temperature sensor module X3 harness connector.
- Damage to the drive motor generator battery control module temperature sensor module wiring harness.
- Damage to the fan or blades.
- Damage to the internal drive motor generator battery cooling air outlet duct seals.
* Test the resistance across each temperature sensor 5 V reference and low reference circuits. Refer to Temperature Versus Resistance ().
* If the hybrid batteries are at or above the temperature values for setting these DTCs, allow the hybrid batteries to cool down by letting the
vehicle stand at room temperature, this could take 4 to 8 hours.
* Use the scan tool output control to test the drive motor generator battery vent fan operation.
* Inspect the ground circuit for the drive motor generator battery vent fan relay.
* Inspect the drive motor generator battery vent fan relay connections.
* Refer to Generator Battery Temperature Sensor Location () for the proper locations of the four temperature sensors.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
resistance changes with battery temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the
lower the resistance of the sensor. The drive motor generator battery control module uses the battery temperature sensors to control the battery
cooling fan operation.
The hybrid powertrain control module monitors the average battery pack temperature over serial data. When the average drive motor generator
battery temperature exceeds the calibrated temperature the hybrid powertrain control module will set DTC P0A7E and send a command to the drive
motor generator battery control module to open the high voltage contactors.
Conditions for Running the DTC
* DTC P0A9C, P0A9D, P0A9E, P0AC6, P0AC7, P0AC8, P0ACB, P0ACC, P0ACD, P0AE9, P0AEA, or P0AEB is not set.
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0A7E
The hybrid powertrain control module detects an average battery temperature greater than 73锟斤拷C (163.4锟斤拷F) for 5 seconds.
P1ABE
One of the following conditions exists:
* The drive motor generator battery control module detects an average battery temperature increase of 2锟斤拷C (35.6锟斤拷F) in a 20 second event for 3
consecutive events totaling 60 seconds.
* The drive motor generator battery control module detects 2 battery temperature sensors greater than 65锟斤拷C (149锟斤拷F) for 5 seconds.
* The drive motor generator battery control module detects any battery temperature sensor greater than 70锟斤拷C (158锟斤拷F).
Action Taken When the DTC Sets
P0A7E
* DTC P0A7E is a type C DTC.
* The hybrid powertrain control module commands the drive motor generator battery control module to open the high voltage contactors relays
when the vehicle speed is below 5 km/h (3 mph).
P1ABE
* DTC P1ABE is a type C DTC.
* The drive motor generator battery control module sends a message to the hybrid powertrain control module requesting the high voltage
contactors open. The hybrid powertrain control module will command the contactors relays open when the vehicle speed is less than 5 km/h
(3 mph).
Conditions for Clearing the DTC
DTCs P0A7E and P1ABE are type C DTCs.
Diagnostic Aids
* Battery temperatures can be affected by vehicle load, outside temperature and customer driving conditions. Test drive the vehicle, and
attempt to simulate the Freeze Frame/Failure Record conditions this DTC set under.
* Inspect for the following:
- Air inlet and outlet for blockage.
- Loose or poor connections at the drive motor generator battery control module temperature sensor module X3 harness connector.
- Damage to the drive motor generator battery control module temperature sensor module wiring harness.
- Damage to the fan or blades.
- Damage to the internal drive motor generator battery cooling air outlet duct seals.
* Test the resistance across each temperature sensor 5 V reference and low reference circuits. Refer to Temperature Versus Resistance ().
* If the hybrid batteries are at or above the temperature values for setting these DTCs, allow the hybrid batteries to cool down by letting the
vehicle stand at room temperature, this could take 4 to 8 hours.
* Use the scan tool output control to test the drive motor generator battery vent fan operation.
* Inspect the ground circuit for the drive motor generator battery vent fan relay.
* Inspect the drive motor generator battery vent fan relay connections.
* Refer to Generator Battery Temperature Sensor Location () for the proper locations of the four temperature sensors.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Friday, October 25, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1113
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1113
resistance changes with temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the
resistance of the sensor. The drive motor generator battery control module (BECM) uses the air inlet and outlet temperature sensors to determine if
air is circulating through the drive motor generator battery assembly.
Conditions for Running the DTC
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0AAF and P0AB4
The hybrid battery pack air temperature sensor 1 or 2 is less than -40锟斤拷C (-40锟斤拷F).
P0AAE and P0AB3
The hybrid battery pack air temperature sensor 1 or 2 is greater than 95锟斤拷C (203锟斤拷F).
P0AAD
The hybrid battery cooling fan is ON and the difference between sensor 1 and 2 is greater than 10锟斤拷C (50锟斤拷F) difference for 9 seconds.
P0AB2
The hybrid battery cooling fan is ON and the outlet air temperature is greater than maximum hybrid battery temperature value by 10锟斤拷C (50锟斤拷F) for 9
seconds.
Action Taken When the DTC Sets
* DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
* The drive motor generator battery sends a message to the hybrid powertrain control module to reduce the power by 50 percent.
Conditions for Clearing the DTC
DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Drive Motor Generator Battery Cooling Description ()
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
resistance changes with temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the
resistance of the sensor. The drive motor generator battery control module (BECM) uses the air inlet and outlet temperature sensors to determine if
air is circulating through the drive motor generator battery assembly.
Conditions for Running the DTC
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
P0AAF and P0AB4
The hybrid battery pack air temperature sensor 1 or 2 is less than -40锟斤拷C (-40锟斤拷F).
P0AAE and P0AB3
The hybrid battery pack air temperature sensor 1 or 2 is greater than 95锟斤拷C (203锟斤拷F).
P0AAD
The hybrid battery cooling fan is ON and the difference between sensor 1 and 2 is greater than 10锟斤拷C (50锟斤拷F) difference for 9 seconds.
P0AB2
The hybrid battery cooling fan is ON and the outlet air temperature is greater than maximum hybrid battery temperature value by 10锟斤拷C (50锟斤拷F) for 9
seconds.
Action Taken When the DTC Sets
* DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
* The drive motor generator battery sends a message to the hybrid powertrain control module to reduce the power by 50 percent.
Conditions for Clearing the DTC
DTCs P0AAD, P0AAE, P0AAF, P0AB2, P0AB3, and P0AB4 are type B DTCs.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Drive Motor Generator Battery Cooling Description ()
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
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