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Home >> Ford >> 2005 >> Excursion 6.0 P, 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Pinpoint Tests - 6.0L Diesel (99P F450/550) >> Pinpoint Test AK: Variable Geometry Turbo (VGT) Output >> Introduction >> Fault Detection
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Fault Detection

The PCM continuously monitors the VGT circuit for an open or short.

CAUTION: The PCM harness connectors must be properly seated and the connector latch properly attached to eliminate possible driveability concerns or a no start condition. Installing the PCM connectors on an angle may cause an improper connection, misdiagnosis, and damaged components. Install the connector until the lever pivots and seats itself. Apply light pressure to get the connector into position on the PCM and then fully seat the connector.
NOTE: Visually inspect the harness connectors for corrosion, damage, proper mating, and correct pin tension.
Fig 1: Identifying PCM Engine Harness Connector And VGT Actuator Connector
G03982268Courtesy of FORD MOTOR CO.