Pinpoint Test W: U3006:1C

WARNING: This page is about a different car, the 2023 Ford Bronco. 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. Refer to GROUNDS for schematic and connector information.

Normal Operation and Fault Conditions

The BCM receives battery voltage at all times from the High Current BJB.

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
Fuse(s)
Charging system concern
Battery concern
High Current BJB
BCM

Visual Inspection and Pre-checks

Fuse 202 (60A)
Fuse 1 (30A)
Fuse 3 (30A)
Fuse 210 (30A)

W1 CHECK THE BCM (BODY CONTROL MODULE) FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)
- Connect the diagnostic tool.
- Ignition ON.
- Using a diagnostic scan tool, perform the BCM self-test.
Are there any charging system DTCs present?

Yes DIAGNOSE and REPAIR these DTCs first. REFER to the appropriate DTC Chart.

No GO to W2

W2 CHECK FOR CHARGING SYSTEM DTCS SET IN OTHER MODULES
- Using a diagnostic scan tool, retrieve all DTCs.
Are there any charging system DTCs present in other modules?

Yes REFER to the appropriate DTC Chart.

No GO to W3

W3 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 and REPAIR these DTCs first. Refer to CHARGING SYSTEM - 2.3L ECOBOOST (199KW/270PS) REFER to: CHARGING SYSTEM - 2.7L ECOBOOST (238KW/324PS)

GO to W4

W4 RECHECK THE BCM (BODY CONTROL MODULE) DTCS

Ignition OFF.

Ignition ON.

Using a diagnostic scan tool, clear the DTCs.

Wait 10 seconds.

Using a diagnostic scan tool, check the BCM DTCs.

Is DTC U3006:1C present?

Yes

GO to W5

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.

W5 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 W6

No	If the battery is discharged, diagnose the cause of the low battery condition. REFER to: Battery Diagnosis and Testing . If the battery condition fails, INSTALL a new battery. REFER to: Battery Removal and Installation .

W6 COMPARE THE BCM (BODY CONTROL MODULE) BATTERY VOLTAGE PID (PARAMETER IDENTIFICATION) WITH ACTUAL BATTERY VOLTAGE

Start the engine.

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

Access the BCM and monitor the VPWR_RAW (V) PID
Compare BCMPID with actual battery voltage.

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,
Access the BCM and monitor the VPWR_RAW (V) PID

Is the recorded battery voltage within 0.2 volt of the

Access the BCM and monitor the VPWR_RAW (V) PID

Yes	TURN the engine off, GO to W9

GO to W7

W7 CHECK THE BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT

Ignition OFF.

Disconnect BCM C2280H.

Disconnect BCM C2280G.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280H Pin 1	Courtesy of FORD MOTOR COMPANY	Ground

Positive Lead	Measurement / Action	Negative Lead
C2280G Pin 17	Courtesy of FORD MOTOR COMPANY	Ground
C2280G Pin 21	Courtesy of FORD MOTOR COMPANY	Ground
C2280G Pin 22	Courtesy of FORD MOTOR COMPANY	Ground

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

Yes

GO to W8

No	REPAIR the faulty circuit.

W8 CHECK THE BCM (BODY CONTROL MODULE) PROCESSOR GROUNDS

Ignition OFF.

Disconnect BCM C2280C.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280C Pin 6	Courtesy of FORD MOTOR COMPANY	Ground
C2280C Pin 7	Courtesy of FORD MOTOR COMPANY	Ground
C2280C Pin 10	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances less than 3 ohms?

Yes

GO to W9

No	REPAIR the circuit in question.

W9 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.