Ford F150 Pickup. Instruction — part 355

Sensor

1. Connect EEC-IV 60-Pin Breakout Box to the EHCU with ABS Adapter Cable.

2. Disconnect the suspect anti-lock brake sensor.

3. Check the harness for short to ground.

Fig. 42: Identifying Anti Lock Brake Sensor Circuits
Courtesy of FORD MOTOR CO.

1. Monitor the resistance between EEC-IV 60-Pin Breakout Box pins and ground as follows:

2. Drive over rough roads at various speeds.

3. If there is continuity between either circuit and ground, repair the circuit for a short to ground.

4. Check harness for open circuit.

1. Connect a jumper between the two pins on the suspect sensor connector.

NOTE:

Use 88 Digital Multimeter with the minimum resistance hold feature
enabled for this test.

NOTE:

Connect jumper securely to the suspect sensor connector.

NOTE:

Use 88 Digital Multimeter with the maximum resistance hold feature
enabled for this test.

2003 Ford Pickup F150

2003 BRAKES Anti-Lock Control - 4-Wheel - F150 Pickup

Fig. 43: Identifying Anti Lock Brake Sensor Circuits
Courtesy of FORD MOTOR CO.

2. Monitor the resistance between EEC-IV 60-Pin Breakout Box pins as follows:

3. Drive over rough roads at various speeds.

4. If there is open circuit detected between pins, repair the circuit(s) for an open circuit.

5. Check suspect sensor electrical connector.

NOTE:

Use 88 Digital Multimeter with the maximum resistance hold feature
enabled for this test.

2003 Ford Pickup F150

2003 BRAKES Anti-Lock Control - 4-Wheel - F150 Pickup

Fig. 44: Sensor Resistance Specifications
Courtesy of FORD MOTOR CO.

1. Monitor the resistance between suspect anti-lock brake sensor terminals while wiggling the

electrical connector:

2. If the resistance is above specifications, install a new anti-lock brake sensor.

Fig. 45: Sensor Resistance Specifications (1 Of 2)
Courtesy of FORD MOTOR CO.

NOTE:

Use 88 Digital Multimeter with the minimum resistance hold feature
enabled for this test.

2003 Ford Pickup F150

2003 BRAKES Anti-Lock Control - 4-Wheel - F150 Pickup

Fig. 46: Sensor Resistance Specifications (2 Of 2)
Courtesy of FORD MOTOR CO.

3. Monitor the resistance between suspect anti-lock brake sensor pins (component side) while

wiggling the electrical connector:

4. If the resistance is below specifications, install a new anti-lock brake sensor.

REMOVAL & INSTALLATION

HYDRAULIC CONTROL UNIT (HCU)

Removal & Installation

1. Disconnect the battery negative cable. For additional information, refer to BATTERY, MOUNTING

AND CABLES - F150 PICKUP .

2. Disconnect the anti-lock brake control module electrical connector.

CAUTION: Electronic modules are sensitive to static electrical charges. If

exposed to these charges, damage may result.

2003 Ford Pickup F150

2003 BRAKES Anti-Lock Control - 4-Wheel - F150 Pickup