WARNING: To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to depower the system. The high-voltage system utilizes approximately 300 volts DC, provided through high-voltage cables to its components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.

This pinpoint test is intended to diagnose the following:

brake pedal position (BPP) switch (13480)
harness circuits: B+, BPP, BPS, SIGRTN
powertrain control module (PCM) (12A650)

Fig 1: Brake Pedal Position (BPP) Switch Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
BPS (Brake Pressure Switch)	2
SIGRTN (Signal Return)	3

Fig 2: Powertrain Control Module (PCM) Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
BPP (Brake Pedal Position)	B2
BPS (Brake Pressure Switch)	B3
SIGRTN (Signal Return)	B39

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Pinpoint Tests FD: Brake Pedal Inputs: Introduction

Use the Manual With the Right Hardware

When to See a Mechanic

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