Pinpoint Test J: U3003:17

WARNING: This page is about a different car, the 2021 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Power Distribution/BCM for schematic and connector information.

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCMC U3003:17	Battery Voltage: Circuit Voltage Above Threshold	A continuous and on-demand DTC that sets in the BCMC when the BCMC detects higher than expected battery voltage on the voltage supply input circuit.

Possible Sources

Charging system concern
BCMC

J1 CHECK FOR OVERCHARGING DIAGNOSTIC TROUBLE CODES (DTCS) SET IN OTHER MODULES
- Ignition ON.
- Using a diagnostic scan tool, retrieve all
  Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Are any charging system DTCs present?

Yes REFER to the appropriate DTC Chart.

No GO to J2

J2 CHECK THE BATTERY VOLTAGE

Turn off all interior/exterior lights and accessories.

Start and run the engine at approximately 2, 000 rpm for three minutes while monitoring the battery voltage.

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY

Does the battery voltage rise to 16 volts or higher?

Yes	DIAGNOSE the over-charging system concern. REFER to: Instrument Panel and Interior Switches Illumination

GO to J3

J3 RECHECK THE BCMC (BODY CONTROL MODULE C) CMDTCS

Using a diagnostic scan tool, clear the DTCs.

Wait 10 seconds.

Using a diagnostic scan tool, check the BCMC CMDTCs.

Is DTC U3003:17 still present?

Yes

GO to J4

No	The system is operating correctly at this time. The DTC may have been caused by module connections or may have been set previously during battery charging or while jump starting the vehicle. ADDRESS the root cause of any connector or pin issues.

J4 CHECK FOR CORRECT BCMC (BODY CONTROL MODULE C) OPERATION

Disconnect and inspect the BCMC connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCMC connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCMC. REFER to: Body Control Module C (BCMC)

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.