Detroit DD16 EPA07 (2007-09) Fault Code: SPN 615 FMI 4 (MCM) Axial Power Turbine Air Seal Pressure Regulator Valve Circuit Failed High

NOTE: Repair short to power between turbocharger compound air seal pressure regulator valve harness connector pin 1 and pin 70 of the motor control module (MCM) 120-pin connector.

PROBABLE CAUSES:
1. APT air seal pressure regulator valve harness connector/wiring.
2. APT air seal pressure regulator valve.