Pinpoint Test N : DTC (Diagnostic Trouble Code) U3003:16

WARNING: This page is about a different car, the 2015 Ford C-Max. However, it is still accessible from the selected car via links, so may be relevant.

N1 CARRY OUT THE BCM (BODY CONTROL MODULE) SELF-TEST

NOTE: DTC U3003:16 will not clear unless the battery voltage is greater than 13V for 2 minutes.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

Using a diagnostic scan tool, perform the BCM self-test.

Is DTC U3003:16 still present?

Yes

GO to N2

No	The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.

N2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, retrieve all Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Are any charging system Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to: Direct Current/Direct Current (DC/DC) Converter Control Module - Hybrid Electric Vehicle (HEV) .

No GO to N3

N3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Check the battery condition and verify the battery is fully charged. REFER to: Battery .
Is the battery OK and fully charged?

Yes GO to N4

No CHARGE or INSTALL a new battery. REFER to: Battery - Plug-In Hybrid Electric Vehicle (PHEV) .

N4 CHECK THE BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY

Ignition OFF.

Disconnect: BCM C2280G .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280G-1	Courtesy of FORD MOTOR COMPANY	Ground
C2280G-2	Courtesy of FORD MOTOR COMPANY	Ground

Are the voltages greater than 11 volts?

Yes

GO to N5

No	VERIFY the BJB fuses 3 (50A) and 4 (50A) are OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes for the short circuit.

N5 CHECK THE BCM (BODY CONTROL MODULE) PROCESSOR GROUND

Disconnect: BCM C2280A .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280A-3	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to N6

No	REPAIR the circuit.

N6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM 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 BCM 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM. REFER to: Body Control Module (BCM) .

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.