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Home >> Cadillac >> 2009 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 149 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P0A2F >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
  1. Review the Failure Records when the DTC set.
  2. Compare the MTS values for each drive motor generator.
    • If both MTS values were not at or near 200°C (392°F), test the MTS signal circuit for a low resistance to ground condition.
    • If the circuit tests normal, replace the drive motor generator.
  3. Inspect the transmission cooling system for restrictions or damage.
    • If a concern is found, repair or replace the restricted or damaged components as necessary.
  4. Perform the Transmission Fluid Cooler Flushing and Flow Test .
    • If a concern is found, repair or replace the damaged components as necessary.
  5. Perform the automatic transmission Line Pressure Check .
    • If a concern is found repair or replace the damaged components as necessary.
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