Pinpoint Test C: B1305:01, B1305:15

WARNING: This page is about a different car, the 2021 Ford F-150. 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: Perimeter Anti-Theft Alarm - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B1305:01	Hood Switch: General Electrical Failure	Sets when the BCM detects an open from the hood ajar switch input during a self-test. This DTC also sets if the self-test is carried out with the hood open.
BCM B1305:15	Hood Switch: Circuit Short To Battery Or Open	Sets when the BCM detects a short to battery or open from the hood ajar switch input during a self-test.

Possible Sources

Wiring, terminals or connectors
Hood latch
BCM

Visual Inspection and Pre-checks

Inspect the hood latch for damage.

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

C1 CHECK THE HOOD AJAR SWITCH

Disconnect: Hood Ajar Switch C127.

Ignition ON.

Connect: a fused jumper wire

Positive Lead	Measurement / Action	Negative Lead
C127-2	Courtesy of FORD MOTOR COMPANY	C127-1

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

Is DTC B1305:01 or B1305:15 still present?

Yes	REMOVE the fused jumper wire. GO to C2

No	REMOVE the fused jumper wire. INSTALL a new hood latch. REFER to: Hood Latch .

C2 CHECK THE HOOD AJAR SWITCH GROUND CIRCUIT FOR AN OPEN

Connect a fused jumper wire:

Positive Lead	Measurement / Action	Negative Lead
C127-2	Courtesy of FORD MOTOR COMPANY	Ground

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

Is DTC B1305:01 or B1305:15 still present?

Yes	REMOVE the fused jumper wire. GO to C3

No	REMOVE the fused jumper wire. REPAIR the circuit.

C3 CHECK THE HOOD AJAR SWITCH FOR A SHORT TO VOLTAGE

Disconnect BCM C2280F.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C127-2	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit in question.

GO to C4

C4 CHECK THE HOOD AJAR SWITCH INPUT CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C127-2	Courtesy of FORD MOTOR COMPANY	C2280F-14

Is the resistance less than 3 ohms?

Yes

GO to C5

No	REPAIR the circuit.

C5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all the 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.