Pinpoint Test D : B10D7:87

D1 CHECK THE PATS (PASSIVE ANTI-THEFT SYSTEM) TRANSCEIVER VOLTAGE SUPPLY CIRCUIT FOR VOLTAGE

Ignition OFF.

Disconnect PATS Transceiver C252.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C252-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to D3

No	VERIFY the BCM fuse 59 (5A) is OK. If OK, GO to D2 If not OK, REFER to OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

D2 CHECK THE PATS (PASSIVE ANTI-THEFT SYSTEM) TRANSCEIVER VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect BCM C2280F.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C252-1	Courtesy of FORD MOTOR COMPANY	C2280F-10

Is the resistance less than 3 ohms?

Yes

GO to D6

No	REPAIR the circuit.

D3 CHECK THE PATS (PASSIVE ANTI-THEFT SYSTEM) TRANSCEIVER CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect BCM C2280C.

Disconnect Ignition Relay.

Connect:

Lead 1	Measurement / Action	Lead 2
Courtesy of FORD MOTOR COMPANY Ignition Relay Pin 3	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY Ignition Relay Pin 5

Measure:

Positive Lead	Measurement / Action	Negative Lead
C252-2	Courtesy of FORD MOTOR COMPANY	Ground
C252-3	Courtesy of FORD MOTOR COMPANY	Ground
C252-4	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REMOVE the fused jumper wire. REPAIR the circuit in question.

No	REMOVE the fused jumper wire. GO to D4

D4 CHECK THE PATS (PASSIVE ANTI-THEFT SYSTEM) TRANSCEIVER CIRCUITS FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C252-2	Courtesy of FORD MOTOR COMPANY	Ground
C252-3	Courtesy of FORD MOTOR COMPANY	Ground
C252-4	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes

GO to D5

No	REPAIR the circuit in question.

D5 CHECK THE PATS (PASSIVE ANTI-THEFT SYSTEM) TRANSCEIVER CIRCUITS FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C252-2	Courtesy of FORD MOTOR COMPANY	C2280C-30
C252-3	Courtesy of FORD MOTOR COMPANY	C2280C-54
C252-4	Courtesy of FORD MOTOR COMPANY	C2280C-34

Are the resistances less than 3 ohms?

Yes	INSTALL a new PATS transceiver. CLEAR the Diagnostic Trouble Codes (DTCs). CYCLE the ignition off and then on. WAIT 10 seconds. REPEAT the BCM self-test. If DTC B10D7:87 is retrieved again, GO to D6

No	REPAIR the circuit in question.

D6 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 all 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 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 BCM Guided Routine 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.