Pinpoint Test C : B1305:01

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

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:

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

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

Is DTC B1305:01 still present?

Yes	REMOVE the fused jumper wire. GO to C2.
No	REMOVE the fused jumper wire. INSTALL a new hood latch. REFER to Handles, Locks, Latches and Entry Systems .

C2 CHECK THE HOOD AJAR SWITCH GROUND CIRCUIT FOR AN OPEN

Connect:

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

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

Is DTC B1305:01 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 INPUT CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: BCM C2280F .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C127-1	Courtesy of FORD MOTOR COMPANY	C2280F-2

Is the resistance less than 3 ohms?

Yes	GO to C4.
No	REPAIR the circuit.

C4 CHECK FOR CORRECT BCM 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 all the BCM connectors. Make sure they seat correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK On-Line Automotive Service Information System (OASIS) for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, BCM Hardware Testing .
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.