Automatic Transmission Auxiliary Fluid Pump Control Module Scan Tool Information
The automatic transmission auxiliary fluid pump control module is a non-serviceable motor control module within the power inverter module, often referred to as the drive motor generator power inverter module assembly. The Automatic Transmission Auxiliary Fluid Pump Control Module Scan Tool Data Parameters list contains hybrid controls-related parameters. The list is arranged in alphabetical order.
Use the Automatic Transmission Auxiliary Fluid Pump Control Module Scan Tool Data Parameters list only after the following is determined:
- The Diagnostic System Check - Vehicle is completed.
- No diagnostic trouble codes (DTCs)
- On-board diagnostics are functioning properly
The scan tool values from a properly running vehicle may be used for comparison with the vehicle you are diagnosing. The Automatic Transmission Auxiliary Fluid Pump Control Module Scan Tool Data Parameters list represents values that would be seen on a normally running vehicle.
A scan tool that displays faulty data should not be used. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.
Only the parameters listed below are referenced in this service manual for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Hybrid Controls for diagnosis.
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Vehicle ON/Closed Throttle/Park or Neutral/Accessories OFF unless otherwise noted | |||
| Auxiliary Transmission Fluid Pump Command | - | Varies | This indicates the commanded torque value for auxiliary transmission fluid pump. |
| Auxiliary Transmission Fluid Pump Current | - | Varies | This indicates the DC current consumed by hybrid auxiliary transmission fluid pump. |
| Auxiliary Transmission Fluid Pump Inverter DC Voltage | - | Varies | This indicates the voltage on the HV DC bus as measured by the auxiliary transmission fluid pump control module. |
| Auxiliary Transmission Fluid Pump Motor Control Module Output Driver Temperature Sensor 1 | - | Varies | This indicates the temperature at the inverter within the auxiliary transmission fluid pump control module. |
| Auxiliary Transmission Fluid Pump Negative Supply Isolation Voltage | - | Varies | This indicates the high voltage negative to chassis voltage as measured by the auxiliary transmission fluid pump control module. |
| Auxiliary Transmission Fluid Pump Phase U Current | - | Varies | This indicates the current flow to phase U of auxiliary transmission fluid pump motor. |
| Auxiliary Transmission Fluid Pump Phase V Current | - | Varies | This indicates the current flow to phase V of auxiliary transmission fluid pump. |
| Auxiliary Transmission Fluid Pump Phase W Current | - | Varies | This indicates the current flow to phase W of auxiliary transmission fluid pump motor. |
| Auxiliary Transmission Fluid Pump Positive Supply Isolation Voltage | - | Varies | This indicates the high voltage positive to chassis voltage as measured by the auxiliary transmission fluid pump control module. |
| Auxiliary Transmission Fluid Pump | - | Varies | This indicates the actual torque value of hybrid auxiliary transmission fluid pump. |
| Auxiliary Transmission Fluid Pump | - | Varies | This indicates the speed, in revolutions per minute, of hybrid auxiliary transmission fluid pump. |
| Auxiliary Transmission Fluid Pump Motor Torque | - | Varies | This indicates the actual torque value for auxiliary transmission fluid pump. |
| Ignition 1 Signal | - | Varies | This parameter displays the voltage of the ignition feed circuit of the hybrid powertrain control module. |
| Hybrid Powertrain Control Module High Voltage Circuit | - | Varies | This displays the high voltage circuit voltage as monitored by the hybrid powertrain control module which detects voltage in a range from 0-655.35 V. |