419-01B Passive Anti-Theft System (PATS) 2013 - 2014 Fusion
Diagnosis and Testing Procedure revision date: 12/10/2012

Passive Anti-Theft System (PATS)

BCM DTC Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).




  DTC Description Action
B10D5:13 PATS Antenna: Circuit Open INSTALL a new PATS transceiver.
REFER to: Passive Anti-Theft System (PATS) Transceiver (419-01B Passive Anti-Theft System (PATS), Removal and Installation).
B10D7:05 PATS Key: System Programming Failure   GO to Pinpoint Test B
B10D7:51 PATS Key: Not Programmed PROGRAM the PATS key in question.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).
B10D7:87 PATS Key: Missing Message   GO to Pinpoint Test D
B10D7:8F PATS Key: Erratic   GO to Pinpoint Test C
B10D8:00 PATS Key Less Than Minimum Programmed: No Sub Type Information Less than 2 keys are programmed (minimum of 2 keys must be programmed). CYCLE the customer's second key in the ignition key cylinder to program (when less than 2 keys are programmed, the BCM automatically programs the first 2 keys that are cycled in the ignition key cylinder).
B10D9:87 PATS Transponder: Missing Message   GO to Pinpoint Test E
B10DA:51 PATS Target Identifier: Not Programmed There is no PCM / SOBDMC ID stored in the BCM memory. PERFORM a parameter reset.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).
All other Diagnostic Trouble Codes (DTCs) -  
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).


PCM / SOBDMC DTC Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).




  DTC Description Action
P161A Incorrect Response from Immobilizer Control Module The BCM ID received by the PCM / SOBDMC does not match the ID stored in the PCM / SOBDMC memory. PERFORM a parameter reset.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).
P161B Incorrect Response from Secondary Immobilizer Module The BCM ID received by the SOBDMC does not match the ID stored in the SOBDMC memory. PERFORM a parameter reset.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).
All other Diagnostic Trouble Codes (DTCs) -   Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual.


Symptom Chart

Symptom Chart: PATS

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).




Condition Possible Sources Actions
The vehicle does not start or the ready to drive indicator does not display Refer to the Pinpoint Test   GO to Pinpoint Test A
Unable to program keys Refer to the Pinpoint Test PERFORM the BCM self-test. REFER to the BCM DTC Chart in this section.


Pinpoint Tests

The Vehicle Does Not Start Or The Ready To Drive Indicator Does Not Display

Normal Operation and Fault Conditions


REFER to: Passive Anti-Theft System (PATS) - System Operation and Component Description (419-01B Passive Anti-Theft System (PATS), Description and Operation).

Possible Sources


PINPOINT TEST A : THE VEHICLE DOES NOT START OR THE READY TO DRIVE INDICATOR DOES NOT DISPLAY
NOTE: This pinpoint test requires a second programmed PATS key. If only one key is available, obtain a second programmed PATS key.
A1   CHECK THE OPERATION OF THE SECOND PROGRAMMED KEY
  • Using the second programmed PATS key, attempt to start the vehicle.

Does the second programmed key start the vehicle?

Yes REPROGRAM the first PATS key.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).

TEST the system for normal operation. If the concern is still present, DISCARD the PATS key in question and program a new PATS key.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).
No GO to A2


A2   CHECK FOR COMMUNICATION WITH THE PCM (POWERTRAIN CONTROL MODULE) / SOBDMC (HYBRID POWERTRAIN CONTROL MODULE) AND THE BCM (BODY CONTROL MODULE)
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Do the PCM / SOBDMC and the BCM pass the network test?

Yes For non-hybrid vehicles, GO to A3
For hybrid vehicles, GO to A4
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).


A3   CHECK IF THE ENGINE CRANKS
  • Start the engine.

Does the engine crank?

Yes The no-start condition is not PATS -related. Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual.
No GO to A4


A4   CHECK FOR PCM (POWERTRAIN CONTROL MODULE) / SOBDMC (HYBRID POWERTRAIN CONTROL MODULE) AND BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, perform the PCM / SOBDMC and the BCM self-tests.

Are any PCM / SOBDMC or BCM Diagnostic Trouble Codes (DTCs) present?

Yes REFER to the PCM / SOBDMC or BCM DTC Chart in this section.
No For non-hybrid vehicles, DIAGNOSE the starting system. Refer to the appropriate section in Group 303 for the procedure.
For hybrid vehicles, GO to A5


A5   CHECK THE IPC (INSTRUMENT PANEL CLUSTER)
  • Ignition OFF.
  • Ignition ON.
  • Observe the IPC .

Do the IPC indicators prove-out?

Yes DIAGNOSE the base powertrain system concern. Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual.
No DIAGNOSE the inoperative IPC .
REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).



B10D7:05

Normal Operation and Fault Conditions

When the BCM enters a key programming state, it activates the PATS transceiver to read the key in the ignition lock cylinder. If a valid PATS key is used and there are no concerns with PATS , the key is programmed into the BCM memory.


REFER to: Passive Anti-Theft System (PATS) - System Operation and Component Description (419-01B Passive Anti-Theft System (PATS), Description and Operation).



  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B10D7:05 PATS Key: System Programming Failure Sets when a PATS key is not successfully programmed into the BCM .


Possible Sources

Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST B : B10D7:05
B1   CHECK THE BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE SELF-TEST
  • Review the Diagnostic Trouble Codes (DTCs) from the BCM self-test.

Is DTC B10D5:13, B10D7:87 or B10D9:87 present?

Yes For DTC B10D5:13, INSTALL a new PATS transceiver.
REFER to: Passive Anti-Theft System (PATS) Transceiver (419-01B Passive Anti-Theft System (PATS), Removal and Installation).

For DTC B10D7:87, GO to Pinpoint Test D
For DTC B10D9:87, GO to Pinpoint Test E
No GO to B2


B2   CHECK THE PATS (PASSIVE ANTI-THEFT SYSTEM) KEY
  • Verify the correct PATS keys are used with the vehicle.

Are the correct PATS keys used?

Yes PROGRAM the key again. If key programming fails, DISCARD the damaged key and PROGRAM a new key.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).
No OBTAIN the correct key for the vehicle. PROGRAM the new key.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).



B10D7:8F

Normal Operation and Fault Conditions

When the ignition transitions to RUN or START, the BCM activates the PATS transceiver to read the key in the ignition lock cylinder. If the BCM does not receive a PATS key code or if the code is invalid, the PATS prevents the vehicle from starting.


REFER to: Passive Anti-Theft System (PATS) - System Operation and Component Description (419-01B Passive Anti-Theft System (PATS), Description and Operation).



  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B10D7:8F PATS Key: Erratic Sets when the BCM reads a partial or corrupt PATS key read.


Possible Sources

Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST C : B10D7:8F
NOTE: This pinpoint test requires a second programmed PATS key. If only one key is available, obtain a second programmed PATS key.
C1   CHECK THE PATS (PASSIVE ANTI-THEFT SYSTEM) KEY
  • Verify the correct PATS keys are used with the vehicle.

Are the correct PATS keys used?

Yes GO to C2
No OBTAIN the correct key(s) for the vehicle. PROGRAM the new key(s).
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).


C2   CHECK FOR RADIO FREQUENCY (RF) INTERFERENCE
  • Check for metallic objects or other electronic devices on the same key ring, such as a second PATS key for another vehicle or items used to purchase gasoline.

Are any items identified on the key ring that may cause Radio Frequency (RF) interference?

Yes REMOVE the programmed key from the key ring. TEST the system for normal operation.
If the concern is still present, GO to C3
If the concern is no longer present, INFORM the customer of the cause of the concern.
No GO to C3


C3   ISOLATE THE PATS (PASSIVE ANTI-THEFT SYSTEM) KEYS
  • Place the first PATS key in the ignition lock cylinder.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the BCM Diagnostic Trouble Codes (DTCs).
  • Ignition OFF.
  • Insert the customer's second key.
  • Ignition ON.
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B10D7:8F retrieved for both keys?

Yes INSTALL a new PATS transceiver.
REFER to: Passive Anti-Theft System (PATS) Transceiver (419-01B Passive Anti-Theft System (PATS), Removal and Installation).
No DISCARD the key in question and PROGRAM a new key.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).



B10D7:87

Normal Operation and Fault Conditions



  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B10D7:87 PATS Key: Missing Message Sets when the BCM does not receive a key read from the PATS transceiver when communication is present.


Possible Sources


PINPOINT TEST D : B10D7:87
NOTE: This pinpoint test requires a second programmed PATS key. If only one key is available, obtain a second programmed PATS key.
D1   CHECK FOR RADIO FREQUENCY (RF) INTERFERENCE
  • Check for metallic objects or other electronic devices on the same key ring, such as a second PATS key for another vehicle or items used to purchase gasoline.

Are any items identified on the key ring that may cause Radio Frequency (RF) interference?

Yes REMOVE the programmed key from the key ring. TEST the system for normal operation.
If the concern is still present, GO to D2
If the concern is no longer present, INFORM the customer of the cause of the concern.
No GO to D2


D2   CHECK IF THE CONCERN IS PRESENT FOR BOTH PROGRAMMED KEYS
  • Place the first PATS key in the ignition lock cylinder.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the BCM Diagnostic Trouble Codes (DTCs).
  • Ignition OFF.
  • Insert the customer's second key.
  • Ignition ON.
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B10D7:87 present for both keys?

Yes INSTALL a new PATS transceiver.
REFER to: Passive Anti-Theft System (PATS) Transceiver (419-01B Passive Anti-Theft System (PATS), Removal and Installation).
No DISCARD the key in question and PROGRAM a new key.
REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures).



B10D9:87


Refer to Wiring Diagrams Cell 112 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Passive Anti-Theft System (PATS) - System Operation and Component Description (419-01B Passive Anti-Theft System (PATS), Description and Operation).



  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B10D9:87 PATS Transponder: Missing Message Sets when the BCM loses communication with the PATS transceiver.


Possible Sources


PINPOINT TEST E : B10D9:87
E1   CHECK FOR VOLTAGE TO THE PATS (PASSIVE ANTI-THEFT SYSTEM) TRANSCEIVER
  • Ignition OFF.
  • Disconnect PATS Transceiver C252 .
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C252-1   Ground



Is the voltage greater than 11 volts?

Yes GO to E3
No GO to E2


E2   CHECK THE PATS (PASSIVE ANTI-THEFT SYSTEM) TRANSCEIVER VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280G .
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C252-1   C2280G-47



Is the resistance less than 3 ohms?

Yes GO to E7
No REPAIR the circuit.


E3   CHECK THE PATS (PASSIVE ANTI-THEFT SYSTEM) TRANSCEIVER GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C252-4   Ground



Is the resistance less than 3 ohms?

Yes GO to E4
No REPAIR the circuit.


E4   CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect BCM C2280G .
  • Ignition ON.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C252-3   Ground



Is any voltage present?

Yes REPAIR the circuit.
No GO to E5


E5   CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C252-3   Ground



Is the resistance greater than 10,000 ohms?

Yes GO to E6
No REPAIR the circuit.


E6   CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Measure:


    Positive Lead Measurement / Action Negative Lead
      C252-3   C2280G-52



Is the resistance less than 3 ohms?

Yes INSTALL a new PATS transceiver.
REFER to: Passive Anti-Theft System (PATS) Transceiver (419-01B Passive Anti-Theft System (PATS), Removal and Installation).

CLEAR the Diagnostic Trouble Codes (DTCs) and repeat the BCM self-test. If DTC B10D7:87 or B10D9:87 is retrieved again, GO to E7
No REPAIR the circuit.


E7   CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all of 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, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
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.





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