Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1996BRONCO 5.0 N, AUTOMATIC, E4ODREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEMDIAGNOSISTEST X: DRIVE TEST
1996 Ford Bronco 5.0 N, Automatic, E4OD
Test X: Drive Test
1996 Ford Bronco 5.0 N, Automatic, E4ODSECTION Test X: Drive Test
- Low Speed ABS Stop Test
Before performing test, wet down stopping surface to aid test procedure. Drive vehicle at about 10 MPH. Press brake pedal enough to lock all 4 wheels. Momentarily lock-up is permissible. If one wheel does not lock consistently and ABS warning light is not on, go to step 2 . If one wheel does not lock consistently, but other symptoms exist, go to step 6 . If one wheel locks and ABS warning light is not on, go to SYMPTOM TEST B: WHEEL LOCK-UP under SYMPTOM TESTS. If one wheel locks consistently and ABS warning light is on and stays on, go to step 7 . - Unwarranted ABS Activity Test
Drive vehicle at approximately 20 MPH. If windshield wipers are on, turn wipers off. Perform light to medium normal stop. Check for brake pedal pulsation. If ABS pump motor runs, brake pedal pulsation is felt anytime during stop and ABS warning light is not on, go to SYMPTOM TEST A: UNWARRANTED ABS ACTIVITY under SYMPTOM TESTS. If pump motor runs, brake pedal pulsation is felt at any time during stop and ABS warning light comes on and stays on, go to step 7 . If pump motor does not run and brake pedal pulsation is not felt at any time during stop, but other symptoms exist, go to step 6 . If pump motor does not run and brake pedal pulsation is not felt at any time during stop, and ABS warning light is not on, go to next step. If vehicle pulls immediately upon braking and pump motor does not run, go to SYMPTOM TEST E: VEHICLE PULLS DURING BRAKING under SYMPTOM TESTS. If vehicle pulls as soon as pump motor runs, check front sensor opposite pull. Go to SYMPTOM TEST A: UNWARRANTED ABS ACTIVITY under SYMPTOM TESTS. If pump motor runs and no pull is felt, check rear sensor. Go to SYMPTOM TEST A: UNWARRANTED ABS ACTIVITY under SYMPTOM TESTS. - High Sensor Gap Test
Clear codes. Turn ignition off. Start vehicle and shift into Drive (automatic) or 1st gear (manual). Allow vehicle to creep forward at idle for at least 45 seconds. If ABS warning light does not light, go to next step. If ABS warning light comes on, go to step 8 . - Low Sensor Gap Test
Clear codes. Turn ignition off. Start vehicle and shift into Drive (automatic) or 1st gear (manual). In a time period of at least 45 seconds, accelerate vehicle slowly to 25 MPH. If ABS warning light comes on, go to step 8 . If ABS warning light does not come on, go to next step. - Drive Test Complete
If all symptoms have been corrected, drive test procedure is complete. ABS system is functioning properly. If symptoms still exist, go to SYMPTOM TESTS to identify current symptom diagnosis. - Brake Symptom Test
Check brake system for following symptoms: hard or soft brake pedal, lack of braking or vehicle pulls during braking, and ABS pump motor does not run. If any of these symptoms exist, go to SYMPTOM DIAGNOSTIC CHART under SYMPTOM TESTS. If none of these symptoms exist, problem is not in ABS. Check brake mechanical or hydraulic system. See BRAKE SYSTEM article in the BRAKES section. - Obtaining Diagnostic Trouble Code
Check for ABS diagnostic codes. If previous code still is present and pinpoint test for specified code has been completed, perform TEST W: INTERMITTENT PROBLEM . If pinpoint test was not completed, return to specified pinpoint test and complete test. If code is not previous code, go to appropriate pinpoint test for specified code. If only Code 16 is present, go to PRETEST CHECKS . - Locating Incorrect Sensor Signal
Check for ABS diagnostic codes. If Codes 31-33, 35-37, 41-43, 55-57 or 75-77 are present, go to DTC TEST . If Codes 16, 31-33, 35-37, 41-43, 55-57 or 75-77 are not present, but other codes are present, go to appropriate pinpoint test for specified code. If only Code 16 is present, go to PRETEST CHECKS .
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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.