Pinpoint Test V: U3006:1C

WARNING: This page is about a different car, the 2023 Lincoln Nautilus. However, it is still accessible from the selected car via links, so may be relevant.

Vehicle Ground Information

Refer to Grounds for schematic and connector information.

Vehicle Power Information

Refer to Power Distribution for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Charging System - 2.0L EcoBoost (184kW/250PS) - MI4 - System Operation and Component Description . or REFER to: Charging System - 2.0L EcoBoost (184kW/250PS) - MI4 - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM U3006:1C	Control Module Input Power "A" Circuit/Open: Circuit Voltage Out Of Range	A continuous memory DTC that sets in the BCM if the BCM detects out of range voltage on the voltage supply input circuits.

Possible Sources

Wiring, terminals or connectors
Charging system concern
Battery concern
BJB
BCM

V1 CHECK THE BCM (BODY CONTROL MODULE) FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, perform the BCM self-test.
Are any charging system Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to the DTC Chart: BCM .

No GO to V2

V2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS) SET IN OTHER MODULES

Ignition ON.

Using a diagnostic scan tool, retrieve all Diagnostic Trouble Codes (DTCs).

Are any charging system Diagnostic Trouble Codes (DTCs) recorded?

Yes	DIAGNOSE the charging system concern. REFER to: Charging System - 2.0L EcoBoost (184kW/250PS) - MI4 . REFER to: Charging System - 2.7L EcoBoost (238kW/324PS) .

GO to V3

V3 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: Charging System - 2.0L EcoBoost (184kW/250PS) - MI4 . REFER to: Charging System - 2.7L EcoBoost (238kW/324PS) .

GO to V4

V4 RECHECK THE BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition OFF.

Ignition ON.

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

Wait 10 seconds.

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

Is DTC U3006:1C present?

Yes

GO to V5

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.

V5 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 V6

No	If the battery is discharged, DIAGNOSE the cause of the low battery condition. REFER to: Charging System - 2.0L EcoBoost (184kW/250PS) - MI4 . REFER to: Charging System - 2.7L EcoBoost (238kW/324PS) . If the battery condition fails, INSTALL a new battery. REFER to: Battery .

V6 COMPARE THE BCM (BODY CONTROL MODULE) BATTERY VOLTAGE (V_BATT_BCM) PID (PARAMETER IDENTIFICATION) WITH THE ACTUAL BATTERY VOLTAGE

Start the engine.

Turn on accessories (climate control blower on high speed, exterior lights).

With the engine running at idle, measure and record battery voltage:

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

Using a diagnostic scan tool, view the BCM PID V_BATT_BCM.

Is the recorded battery voltage within 0.2 volt of the PID?

Yes	TURN the engine off, GO to V9

GO to V7

V7 CHECK THE BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT

Ignition OFF.

Disconnect BCM C2280B.

Disconnect BCM C2280A.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280B-21	Courtesy of FORD MOTOR COMPANY	Ground
C2280B-22	Courtesy of FORD MOTOR COMPANY	Ground

Positive Lead	Measurement / Action	Negative Lead
C2280A-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage within 0.2 volt of the recorded battery voltage?

Yes

GO to V8

No	REPAIR the circuit for high resistance.

V8 CHECK THE BCM (BODY CONTROL MODULE) PROCESSOR GROUNDS

Ignition OFF.

Disconnect BCM C2280F.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280F-6	Courtesy of FORD MOTOR COMPANY	Ground
C2280F-7	Courtesy of FORD MOTOR COMPANY	Ground
C2280F-10	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances less than 3 ohms?

Yes

GO to V9

No	REPAIR the circuit in question for high resistance.

V9 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 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 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.