DTC P0D69-P0D7F
Diagnostic Instructions
DTC Descriptors
DTC P0D69: A/C Compressor Motor Voltage Sensor Performance
DTC P0D6A: A/C Compressor Motor Voltage Sensor Circuit High Voltage
DTC P0D6B: A/C Compressor Motor Voltage Sensor Circuit Low Voltage
DTC P0D6F: A/C Compressor Motor High Current
DTC P0D71: Electric A/C Compressor Control Module Temperature Sensor Performance
DTC P0D72: Electric A/C Compressor Control Module Temperature Sensor Circuit High Voltage
DTC P0D73: Electric A/C Compressor Control Module Temperature Sensor Circuit Low Voltage
DTC P0D76: Electric A/C Compressor Control Module Output Driver Temperature Sensor Performance
DTC P0D77: Electric A/C Compressor Control Module Output Driver Temperature Sensor Circuit High Voltage
DTC P0D78: Electric A/C Compressor Control Module Output Driver Temperature Sensor Circuit Low Voltage
DTC P0D7A: A/C Compressor Motor Phase U Low Current
DTC P0D7B: A/C Compressor Motor Phase U High Current
DTC P0D7C: A/C Compressor Motor Phase V Low Current
DTC P0D7D: A/C Compressor Motor Phase V High Current
DTC P0D7E: A/C Compressor Motor Phase W Low Current
DTC P0D7F: A/C Compressor Motor Phase W High Current
Circuit/System Description
The AC compressor function is to provide refrigerant flow in the AC refrigerant loop to help cool down the cabin, help dehumidify the air in a defrost mode and help maintain the battery temperature. Rather than a more typical pulley, the A/C compressor uses a 3-phase alternating current, high voltage electric motor to operate. It has an on-board inverter that takes High Voltage direct current from the vehicle's High Voltage Battery and inverts it to alternating current for the motor. The AC compressor shall be activated when any of the three following events occur:
| • | The customer pushes the AC button |
| • | The HVAC control, in AUTO mode, requests the electric AC compressor on to help in cooling the cabin or removing moisture in the defrost mode |
| • | The High Voltage Battery Thermal System requests the AC compressor on to help maintain the battery temperature |
The Hybrid Powertrain control module 2 uses values from the A/C refrigerant pressure transducers, A/C refrigerant thermistor, duct temperature sensors, ambient air temperature sensor, passenger compartment temperature sensor, evaporator temperature sensor, battery cell temperature sensors, battery coolant temperature sensors and battery coolant pumps to determine the speed at which the compressor will operate. This speed request message is sent from the Hybrid/EV Powertrain Control Module 2 to the A/C compressor control module via serial data message.
Conditions for Running the DTC
Certain performance DTCs in this group, P0D69, P0D71, P076, are intended to run after a long ambient soak period, such as being parked overnight, when a hot engine condition has cooled, etc.
DTC P0D69
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Main HV battery contactors must be closed. |
| • | DTCs P0D6A; P0D6B, P0ABC, P0ABD, P0ABB, P0AF8, P1A07, U1111, U185A, P0AE4, P0AD9, P0AA1, P0ADD, P1EBC, P0AE2 must not be set. |
DTC P0D6A
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Difference between the A/C compressor control module high voltage levels and the high voltage Battery Pack Side Voltage is less than 15 V. |
| • | There are no battery pack voltage DTCs set. |
| • | Battery Pack Voltage Sensors are valid. |
DTC P0D6B
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Difference between the A/C compressor control module high voltage levels and the high voltage Battery Pack Side Voltage exceeds 15 V. |
| • | Battery Pack Voltage Sensors are valid. |
| • | There are no battery pack voltage DTCs set. |
| • | Main HV Contactors are Closed |
| • | No main HV contactor faults are active |
DTC P0D6F
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Compressor Speed Request is greater than 0 RPM |
DTC P0D71
| • | 12 V battery system voltage is above 10.25 V. |
| • | Vehicle is in Run Mode or Charging Mode |
| • | Compressor has been off for > 6 hours |
| • | Outside air temperature is greater than -7°C |
| • | Engine coolant temperature is within 15° of outside air temperature |
| • | DTCs P0D77, P0D78, P0606 P0073; P0072; P0071, P0113, P0112, P0111, P0114, P0119; P0118; P0117; P0116, P0D72; P0D73 must not be set |
DTC P0D72
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Outside Air temperature is greater than -7°C (19°F) |
| • | Following DTCs are not set: CPU temp sensor, output driver temp sensor, outside air temperature sensor, engine coolant temperature sensor. |
DTC P0D73
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
DTC P0D76
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Outside Air temperature is greater than -7°C (19°F) |
| • | Engine coolant temperature is within 15° of outside air temperature |
| • | Compressor has been off for > 6 hours |
| • | Following DTCs are not set: P0D77; P0D78, P0606, P0073; P0072; P0071, P0073; P0072; P0071, P0113, P0112, P0111, P0114, P0119; P0118; P0117; P0116 |
DTC P0D77
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Outside Air temperature is greater than -7°C (19°F) |
| • | Compressor Speed Request is greater than 0 RPM |
DTC P0D78
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
DTC P0D7A
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Compressor Speed Request is 0 RPM |
DTC P0D7B
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Compressor Speed Request is 0 RPM |
DTC P0D7C
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Compressor Speed Request is 0 RPM |
DTC P0D7D
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Compressor Speed Request is 0 RPM |
DTC P0D7E
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Compressor Speed Request is 0 RPM |
DTC P0D7F
| • | 12 V battery system voltage is above 10.25 V. |
| • | A/C compressor control module is awake. |
| • | Compressor Speed Request is 0 RPM |
Conditions for Setting the DTC
DTC P0D69
A/C compressor control module high voltage input voltage is not within 10 V of high voltage battery voltage
DTC P0D6A
A/C compressor control module input voltage is greater than 450 V for 6 seconds
DTC P0D6B
A/C compressor control module input voltage is less than 190 V for 6 seconds
DTC P0D6F
A/C compressor control module DC current draw is greater than 27 A for more than 6 seconds.
DTC P0D71
Compressor temperature sensor is not within 10 of intake air temperature sensor and compressor temperature sensor is not within 10° of compressor output driver temperature sensor.
DTC P0D72
less than -40°C (-40°F) for 6 seconds.
DTC P0D73
greater than 135°C (276.6°F) for 6 seconds.
DTC P0D76
Compressor output driver temperature sensor is not within 7° of intake air temperature sensor and compressor output driver temperature sensor is not within 11° of outside air temperature.
DTC P0D77
Air conditioning compressor module output driver temperature sensor is less than -40°C (-40°F)
DTC P0D78
Air conditioning compressor module output driver temperature sensor is greater than 135°C (276.6°F)
DTC P0D7A
Air conditioning compressor motor current U-phase Input>= 68 A
DTC P0D7B
Air conditioning compressor motor current U-phase Input <= -68 A
DTC P0D7C
Air conditioning compressor motor current V-phase Input >= 68 A
DTC P0D7D
Air conditioning compressor motor current V-phase Input<=-68 A
DTC P0D7E
Air conditioning compressor motor current W-phase Input>= 68 A
DTC P0D7F
Air conditioning compressor motor current W-phase Input <= -68 A
Action Taken When the DTC Sets
The A/C compressor control module is disabled.
Conditions for Clearing the DTC
These are all type B DTCs
Reference Information
Schematic Reference
HVAC Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Automatic HVAC Description and Operation
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
| • | Identify how to disable high voltage. |
| • | Identify how to test for the presence of high voltage. |
| • | Identify conditions under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed. |
| • | Safety glasses with appropriate side shields when within 15 metres (50 feet) of the vehicle, either indoors or outdoors. |
| • | Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors. |
| - | Visually and functionally inspect the gloves before use. |
| - | Wear the Insulation gloves with leather protectors at all times when working with the high voltage battery assembly, whether the system is energised or not. |
- Verify that DTC P0D69-P0D7F is not set.
| ⇒ | If the DTC is set, verify that the A/C compressor control module and the Hybrid/EV powertrain control module 2 have the latest software and reprogramme the modules if needed. |
- Operate the vehicle within the conditions for running the DTC. If the DTC resets, replace the G1 A/C compressor. Refer to High Voltage Disabling .
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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