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Home >> Ford >> 2005 >> Excursion 6.0 P, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Pinpoint Tests - 6.0L Diesel (99P F450/550) >> Pinpoint Test I: Parking Brake Applied (PBA) Switch >> Introduction >> Signal Function

Signal Function

The PBA switch provides an input signal to the powertrain control module (PCM) indicating the current status of the parking brake (applied or released). The parking brake signal circuit is pulled to ground with the application of the parking brake.

Fig 1: Identifying PCM Body Harness Connector And PBA Switch Connector
G03982245Courtesy of FORD MOTOR CO.
CAUTION: The PCM harness connectors must be properly attached 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.
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