Pinpoint Test T: The Liftgate Passive Entry Feature Is Inoperative

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

Refer to REMOTE KEYLESS ENTRY AND ALARM for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Handles, Locks, Latches and Entry Systems - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B10C7:01	Interior Trunk Antenna: General Electrical Failure	Sets when the BCM detects a fault from the keyless entry rear antenna input.

Possible Sources

Wiring, terminals or connectors
Keyless entry rear antenna
BCM

T1 CHECK THE DOOR PASSIVE ENTRY FUNCTION
- Ignition OFF.
- Lock the doors.
- Check the passive entry feature at the driver front door.
Does the door passive entry feature operate?

Yes GO to T2

No GO to Pinpoint Test S

T2 CHECK THE LIFTGATE RELEASE SWITCH INPUT
- Close the liftgate.
- Ignition ON.
- Unlock the doors using the door lock control switch.
- Press the liftgate release button located at the rear of the vehicle.
Does the liftgate latch release?

Yes GO to T3

No GO to Pinpoint Test M

T3 CHECK THE KEYLESS ENTRY REAR ANTENNA

Ignition OFF.

Disconnect Keyless Entry Rear Antenna C4378.

Measure:

Right Front

Positive Lead	Measurement / Action	Negative Lead
C4378 Pin 1	Courtesy of FORD MOTOR COMPANY	C4378 Pin 2

Is the resistance between 1 and 3 ohms?

Yes

GO to T4

No	INSTALL a new keyless entry rear antenna. REFER to: Keyless Entry Rear Antenna .

T4 CHECK THE KEYLESS ENTRY REAR ANTENNA CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect BCM C2280G.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4378 Pin 1	Courtesy of FORD MOTOR COMPANY	Ground
C4378 Pin 2	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit in question.

GO to T5

T5 CHECK THE KEYLESS ENTRY REAR ANTENNA CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4378 Pin 1	Courtesy of FORD MOTOR COMPANY	Ground
C4378 Pin 2	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes

GO to T6

No	REPAIR the circuit in question.

T6 CHECK THE KEYLESS ENTRY REAR ANTENNA CIRCUITS FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4378 Pin 1	Courtesy of FORD MOTOR COMPANY	C2280G Pin 14
C4378 Pin 2	Courtesy of FORD MOTOR COMPANY	C2280G Pin 6

Are the resistances less than 3 ohms?

Yes

GO to T7

No	REPAIR the circuit in question.

T7 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all the BCM connectors.

Repair:
- corrosion (install new connectors 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 and 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.