Pinpoint Test A : U3003:16: Notes
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Vehicle Dynamic Systems for schematic and connector information.
Normal Operation and Fault Conditions
The ABS module, hydraulic pump and solenoid valves require an operating voltage that is between 10 and 17 volts. The ABS module receives this voltage from the BJB. The ABS module has 2 ground circuits that splice together and terminate at a single location. Excessive resistance or an open in one or more of these circuits, a discharged battery or a inoperative charging system results in the ABS module setting a DTC.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | This DTC sets in continuous memory and on-demand if the voltage supplied to the ABS module falls below 10 volts. |
Possible Causes
- Fuses
- Wiring, terminals or connectors
- Charging system concern
- Battery
- ABS module
Visual Inspection and Diagnostic Pre-checks
- Make sure both battery terminals and cables are free of any corrosion and other contaminants.
- Make sure both battery terminals are tightened to their correct torque specifications.
- Make sure BJB fuses 32 (5A), 52 (60A) and 59 (30A) are OK.