Pinpoint Test B : B143A:11

WARNING: This page is about a different car, the 2019 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Power Distribution for schematic and connector information.

Normal Operation and Fault Conditions

The BCM transmits an event notification signal which communicates crash status and SRS deployment status to the PCM. When the PCM receives an event notification signal which indicates a crash, it initiates fuel cut-off.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B143A:11	Crash Event Detection Output: Circuit Short To Ground	A continuous memory and on-demand DTC that sets in the BCM if the BCM senses a short to ground on the event notification signal circuit to the PCM.

Possible Sources

Wiring, terminals or connectors
PCM
BCM

B1 CONFIRM THE DTC (DIAGNOSTIC TROUBLE CODE) RESETS

Ignition ON.

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

Wait 10 seconds.

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

Is DTC B143A:11 still present?

Yes

GO to B2

No	The system is operating correctly at this time. The DTC may have been falsely set by a BCM self-test, causing the signal to momentarily stop and set the DTC.

B2 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect PCM C1381B (2.0L EcoBoost).
- Disconnect PCM C1551B (2.7L EcoBoost).
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
- Wait 10 seconds.
- Using a diagnostic scan tool, perform the BCM self-test.
Is DTC B143A:11 still present?

Yes GO to B3

No GO to B4

B3 CHECK THE EVENT NOTIFICATION SIGNAL CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect: BCM C2280C

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280C-29	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to B5

No	REPAIR the circuit.

B4 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Disconnect and inspect all PCM 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 PCM 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to PCM Guided Routine .

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.

B5 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, Refer to BCM Guided Routine .

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.