Ford Mustang 2011 Anti-theft System Service Manual

419-01B-i Anti-Theft — Passive Anti-Theft System (PATS) 419-01B-i

SECTION 419-01B Anti-Theft — Passive Anti-Theft System (PATS)

CONTENTS PAGE

DIAGNOSIS AND TESTING

Anti-Theft ..........................................................................................................................................................................

419-01B-2

Principles of Operation ...............................................................................................................................................

419-01B-2

Inspection and Verification .........................................................................................................................................

419-01B-4

DTC Charts ................................................................................................................................................................

419-01B-5

Symptom Chart ..........................................................................................................................................................

419-01B-6

Pinpoint Tests ............................................................................................................................................................

419-01B-6

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419-01B-2

DIAGNOSIS AND TESTING

Anti-Theft

Special Tool(s)

Anti-Theft — Passive Anti-Theft System (PATS)

Fluke 77-IV Digital Multimeter

FLU77-4 or equivalent

419-01B-2

Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Flex Probe Kit

105-R025D or equivalent

Principles of Operation

NOTE:

Replacement of the Passive Anti-Theft System (PATS) transceiver does not require the PATS keys to be programmed into the Instrument Panel Cluster

(IPC) again.

NOTE:

When using the Integrated Diagnostic System (IDS), the IPC and the PCM parameters are reset at the same time.

NOTE:

Make sure any aftermarket remote start systems have been removed from the vehicle before any PATS-related no-start concerns are investigated.

NOTE:

A minimum of 2 PATS keys must be programmed into the IPC before the vehicle starts.

NOTE:

If the IPC or the PCM is being replaced (or both), the parameters must be reset in both modules or the vehicle experiences a PATS no-start. Refer to Passive

Anti-Theft System (PATS) Parameter Reset in this section.

NOTE:

The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

Anti-Theft Indicator

PATS uses a visual anti-theft indicator located in the IPC. The anti-theft indicator proves out for 3 seconds when the ignition key is in the ON or START position. If there is a PATS concern, the anti-theft indicator either flashes rapidly or glows steadily when the ignition key is turned to the ON or START position. PATS also flashes the anti-theft indicator every 2 seconds when the ignition key is in the OFF position to act as a visual theft deterrent. Refer to

Section 413-01 for information on the anti-theft indicator.

PATS is active only for a few seconds when the vehicle is starting. It is not a PATS concern if the vehicle stalls after it has been running for a minimum of 3 seconds. PATS cannot disable a running vehicle.

A PATS no-start can involve a vehicle no-start due to either the fuel injectors or the starter not operating (or both). If the PATS anti-theft indicator does not prove out and one (or both) of the previous conditions are present, it can be due to a PATS concern. If the anti-theft indicator proves out, and the vehicle

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419-01B-3 Anti-Theft — Passive Anti-Theft System (PATS)

DIAGNOSIS AND TESTING (Continued)

419-01B-3

does not start, it is probably not a PATS concern. Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual. If the anti-theft indicator does not illuminate at all, it can be an IPC concern. GO to Symptom Chart in this section. A low battery voltage condition can cause the PATS to allow starter operation, but can keep the fuel injectors from operating.

Passive Anti-Theft System (PATS) Keys

NOTE:

A maximum of 8 PATS keys can be programmed into the IPC.

PATS uses a special ignition key, called an Integrated Keyhead Transmitter (IKT) key that is larger than a conventional ignition key. It contains a permanently installed electronic device called a transponder and also has the Remote Keyless Entry (RKE) transmitter integrated into the keyhead. Each transponder contains a unique encrypted identification code which is one of a very large number of combinations. The addition of this transponder to the key makes it an "encoded" key. The PATS key does not require batteries and should last the lifetime of the vehicle. The transmitter portion of the IKT key has a battery. Each PATS key must be programmed into the IPC before it can be used to start the vehicle. A maximum of 4 IKT keys can be programmed to start the vehicle and operate the RKE functions. If more than 4 IKT keys are programmed, the RKE portion of the additional IKT keys does not operate. The SJB sets DTC B1138 (Memory Full) and the IPC sets DTC B1218:44 if there is an attempt to program 4 or more IKT keys. These additional keys (more than 4

IKT keys) start the vehicle, but cannot operate the RKE system. If additional PATS keys are desired (more than 4, up to 8 total, IKT and PATS), a standard

PATS key (a non-IKT key) can be used. There are special procedures described in this section that must be carried out if a new PATS key is necessary.

Refer to Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment or Key Programming Using Two Programmed Keys in this section.

Passive Anti-Theft System (PATS) Transceiver

The PATS transceiver is located in the steering column and communicates with the encoded ignition key. During each vehicle start sequence, the PATS transceiver reads the encoded ignition key identification code and sends data to the IPC. The IPC validates the code, and if it is correct, sends a message to the PCM to ground the starter relay solenoid coil and to allow the fuel injectors to operate.

Passive Anti-Theft System (PATS) Operation

The PATS function is controlled by the IPC. With this type of PATS, there are parameters that need to be reset if either the IPC or the PCM (or both) are replaced. Refer to Passive Anti-Theft System (PATS) Parameter Reset in this section.

When the PATS key is turned to the ON or START position, the IPC initiates the key interrogation sequence by sending a voltage signal to the PATS transceiver. The transceiver then uses its antenna to bounce a signal off the transponder in the PATS key. This process "reads" the PATS key identification code and sends the key identification code back to the IPC, which interprets it and determines if it matches one of the stored key codes. If it does match one of the stored key codes, the IPC sends a message to the PCM to ground the starter relay solenoid coil and to allow the fuel injectors to operate. If it does not match one of the stored key codes, or it is only a partial key read or no key read, the IPC sends a message to the PCM to not ground the starter relay solenoid coil and not allow fuel injector operation. The anti-theft indicator in the IPC flashes (or may glow steadily) and the IPC stores one or more DTCs.

All elements of PATS must be functional before the vehicle starts. If any of the components are not working correctly, the vehicle cannot start.

If the IPC must be replaced for any reason (PATS or IPC concerns), the PATS keys must also be programmed into the new IPC. Refer to Integrated Keyhead

Transmitter (IKT) Key Programming Using Diagnostic Equipment in this section.

PATS disables the vehicle from starting if there is:

• a damaged PATS key.

• a non-programmed PATS key.

• a non-PATS key (key has no electronics).

• damaged wiring.

• a damaged transceiver.

• a damaged IPC.

• a damaged PCM.

Passive Anti-Theft System (PATS) PIDs

Monitoring the IPC PATS PIDs can be very useful in determining which diagnostic steps to follow. Viewing the MASTERKEY PID (verifies if the key is programmed) (with both keys) determines if the key is a programmed key and proves-out the transceiver, circuitry and the IPC. A master key is any key that is programmed into the IPC. Viewing the MIN_KEYS PID (minimum number of keys) (this PID does not change) indicates the minimum number of keys that must be programmed into the IPC in order for the vehicle to start. There must be at least 2 keys programmed into the IPC in this type of PATS before the vehicle starts. Viewing the N_KEYCODE PID (number of keys registered in module) determines if the minimum number of keys has been programmed into the IPC. If the N_KEYCODE PID reads 0 or 1, additional key(s) need to be programmed into the IPC in order to meet the minimum of 2 keys. If the

N_KEYCODE PID reads 0 or 1, and the MASTERKEY PID reads Not Present, that particular key must be programmed into the IPC. If the N_KEYCODE

PID reads 1, and the MASTERKEY PID reads Present, that particular key is already programmed into the IPC. The SPAREKEY (spare key) PID is defaulted to ENABLE.

When the parameters in the IPC are reset, it clears (erases) the PCM ID from the IPC. A PCM parameter reset causes the PCM to send a PCM ID to the IPC that is necessary for the system to operate. Make sure to cycle the key at least once, then turn the key ON and make an attempt to start the vehicle for 3-5 seconds before attempting more procedures. If only a PCM parameter reset occurs, the ID stored in the IPC does not match the ID being sent by the PCM, and can cause a PATS-related no-start. Carry out the parameter reset, and do not cycle the key until after the parameter reset selection has been highlighted, and the on-screen instructions have been followed. The IDS resets the parameters in both the IPC and the PCM at the same time.

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419-01B-4

If the PCM_ID reads Stored, the IPC has a PCM ID stored. If it reads Not Stored, a parameter reset may resolve this concern. If the PCM_VFY PID (PCM verify) reads No, the N_KEYCODE PID reads 2 or more and the MASTERKEY PID reads Present, the IPC, and the PCM need to have their parameters reset. Refer to Passive Anti-Theft System (PATS) Parameter Reset in this section.

If the PCM_VFY PID reads NO, the N_KEYCODE PID reads 1 and the MASTERKEY PID reads Present, or if the N_KEYCODE PID reads 0 and the

MASTERKEY PID reads Not Present, a minimum of 2 keys need to be programmed into the IPC. Refer to Integrated Keyhead Transmitter (IKT) Key

Programming Using Diagnostic Equipment in this section.

The SPAREKEY PID is defaulted to ENABLE. With the SPAREKEY PID displaying ENABLE, the IPC accepts more than 2 keys (up to a maximum of 8) being programmed into the IPC using the Key Programming Using Two Programmed Keys procedure in this section. The SPAREKEY PID can be toggled to DISABLE if the customer wants to disable the customer spare key programming function. To enable or disable the spare key feature, refer to Key

Programming Switch State Control in this section. This switch state control does not affect the IKT Key Programming Using Diagnostic Equipment procedure.

In summary, for the PATS PIDs and their correct state in order for the vehicle to start:

• N_KEYCODE must read 2 or more

• MASTERKEY must read Present

• PCM_ID must read Stored

• PCM_VFY must read Yes

Unlimited Key Mode

This system contains a feature named unlimited key mode that has an UNL_KEY_MODE PID (unlimited key mode). This feature allows a customer to program more than 8 keys to their vehicle if they request it. Each vehicle in unlimited key mode is set up with a special unlimited transponder security key code. This allows all the customer vehicles to share the same mechanically cut keys, but no other keys from outside can be used to operate the vehicles. For an individual customer, any randomly selected security key that has been previously mechanically cut and electronically programmed to the vehicle is acceptable. Refer to Spare Key Programming — Unlimited Key Mode in this section.

3.

4.

•

•

•

•

•

Inspection and Verification

1.

Verify the customer concern.

2.

Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Mechanical

Large metallic objects or electronic devices on the key ring that can be used to purchase gasoline or similar items

Passive Anti-Theft System (PATS) key

Use of a non-PATS key or incorrect PATS key

More than one PATS key on key ring

Remote start system installed

•

•

•

•

•

Electrical

Smart Junction Box (SJB) fuse 36 (5A)

Wiring, terminals or connectors

PATS transceiver

Instrument Panel Cluster (IPC)

PCM

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

NOTE:

Make sure to use the latest scan tool software release.

5.

6.

7.

If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).

NOTE:

The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:

• Check the VCM connection to the vehicle.

• Check the scan tool connection to the VCM.

• Refer to Section 418-00, No Power To The Scan Tool, to diagnose no power to the scan tool.

If the scan tool does not communicate with the vehicle:

• Verify the ignition key is in the ON position.

• Verify the scan tool operation with a known good vehicle.

• Refer to Section 418-00, to diagnose no response from the PCM.

Carry out the network test.

• If the scan tool responds with no communication for one or more modules, refer to Section 418-00.

• If the network test passes, retrieve and record the continuous memory DTCs.

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419-01B-5

8.

9.

Clear the continuous DTCs and carry out the self-test diagnostics for the Instrument Panel Cluster (IPC).

If the DTCs retrieved are related to the concern, go to DTC Charts. For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in Section

419-10.

10.

If no DTCs related to the concern are retrieved, verify the symptom. GO to Symptom Chart.

DTC Charts

NOTE:

This module utilizes a 5-character DTC followed by a 2-character failure-type code. The failure-type code provides information about specific fault conditions such as opens, or shorts to ground. Continuous memory DTCs have an additional 2-character DTC status code suffix to assist in determining DTC history.

Instrument Panel Cluster (IPC) DTC Chart

DTC

B10D5:13

Description

PATS Antenna: Circuit Open

B10D7:05

B10D7:51

B10D7:87

B10D7:8F

B10D8:00

B10D9:87

B10DA:51

B10DA:61

B10DA:86

B1218:44

B1218:51

B1218:81

U0100:00

U0100:87

PATS Key: System Programming Failures

PATS Key: Not Programmed

PATS Key: Missing Message

PATS Key: Erratic

PATS Key Less Than Minimum Programmed: No Sub Type

Information

PATS Transponder: Missing Message

PATS PCM Identifier: Not Programmed

PATS PCM Identifier: Signal Calculation Failure

PATS PCM Identifier: Signal Invalid

Transmitter Identification Code: Data Memory Failure

Transmitter Identification Code: Not Programmed

Transmitter Identification Code: Invalid Serial Data Receive

Lost Communication With ECM/PCM "A": No Sub Type

Information

Lost Communication With ECM/PCM "A"

Action

There has been a Passive Anti-Theft System (PATS) transceiver antenna failure. GO to Pinpoint Test A.

There was a failure in key programming. GO to Pinpoint Test I.

There is an unprogrammed PATS key. GO to Pinpoint Test C.

No PATS key has been read by the IPC. GO to Pinpoint Test B.

Only a partial PATS key was read. GO to Pinpoint Test D.

If DTCs B10D7:87, B10D7:51, B10D7:8F, B10D9:87 or

B10D5:13 are present, they must be addressed first. If DTC

B10D8:00 is the only DTC present, PROGRAM additional keys.

REFER to Integrated Keyhead Transmitter (IKT) Key

Programming Using Diagnostic Equipment in this section.

CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test.

The Instrument Panel Cluster (IPC) did not receive the PATS transceiver signal. GO to Pinpoint Test E.

There is no PCM ID stored in the IPC. CARRY OUT a parameter reset of the IPC and the PCM, then CYCLE the ignition and make an attempt to start the vehicle. REFER to

Passive Anti-Theft System (PATS) Parameter Reset in this section. CLEAR the DTCs. REPEAT the self-test.

CARRY OUT a parameter reset of the IPC and the PCM and

CYCLE the ignition 3-5 times, making an attempt to start the vehicle each key cycle. REFER to Passive Anti-Theft System

(PATS) Parameter Reset in this section. CLEAR the DTCs.

CYCLE the ignition. REPEAT the self-test.

NOTE:

If DTCs B10DA:61 and B10DA:86 are both present, address

DTC B10DA:61 first.

GO to Pinpoint Test G.

The Smart Junction Box (SJB) has 4 Integrated Keyhead

Transmitters (IKTs) stored in memory and cannot program any more IKTs into the memory. A maximum of 4 IKT keys can be programmed to start the vehicle and also operate the Remote

Keyless Entry (RKE) functions. If more than 4 IKT keys are programmed, the RKE portion of the additional IKT keys do not operate and the SJB sets a memory full DTC. These additional keys starts the vehicle, but does not operate the RKE system. If additional PATS keys are desired, a standard PATS key (a non-

IKT key) can be used. REFER to Section 501-14.

PROGRAM the keys. REFER to Integrated Keyhead

Transmitter (IKT) Key Programming Using Diagnostic

Equipment. CYCLE the ignition and make an attempt to start the vehicle. CLEAR the DTCs. REPEAT the self-test. If the DTC

B1218:51 is retrieved again, REFER to Section 501-14.

REFER to Section 501-14.

NOTE:

If DTCs U0100:00 and B10DA:61 are both present, address

DTC B10DA:61 first.


NOTE:

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Instrument Panel Cluster (IPC) DTC Chart (Continued)

DTC Description

419-01B-6

Action

If IPC DTCs U0100:87 and B10DA:61 are both present, address

DTC B10DA:61 first.

All other DTCs —


REFER to the Diagnostic Trouble Code (DTC) Chart in Section

419-10.

PCM DTC Chart

DTC

P1260

Description

Theft Detected, Vehicle Immobilized

P1602

P1622

Immobilizer/ECM Communication Error

Immobilizer ID Does Not Match

All other DTCs —

Action

If there are any Passive Anti-Theft System (PATS) DTCs present in the Instrument Panel Cluster (IPC), ADDRESS them first. This DTC may also indicate a Controller Area Network

(CAN) or parameter reset issue. Be sure to verify if there are any communication issues/DTCs with any modules. REFER to

Section 418-00. If DTC P1260 is the only DTC present, there may be a parameter reset, power or ground concern with the

PCM. REFER to Passive Anti-Theft System (PATS) Parameter

Reset in this section. If necessary, CHECK the powers and grounds to the PCM. REFER to the Wiring Diagrams Manual to determine the PCM power and ground circuits.

NOTE:

If IPC DTC B10DA:61 is also present, address DTC B10DA:61 first.


CARRY OUT a parameter reset. REFER to Passive Anti-Theft

System (PATS) Parameter Reset in this section. CLEAR the

DTCs. CYCLE the ignition 3-5 times, making an attempt to start the vehicle each key cycle. REPEAT the self-test.

REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.

Symptom Chart

•

•

•

Symptom Chart

Condition

No communication with the Instrument

Panel Cluster (IPC)

The anti-theft indicator is always/never on •

•

The vehicle does not start

•

•

•

•

•

Possible Sources

Fuse(s)


IPC


IPC

Starting system concern

Passive Anti-Theft System (PATS) concern

•

•

•

Action

REFER to Section 418-00.

GO to Pinpoint Test F.

GO to Pinpoint Test H.

Pinpoint Tests

Pinpoint Test A: DTC B10D5:13

Normal Operation

During each vehicle start sequence, when the Integrated Keyhead Transmitter (IKT) key is turned to the START or ON position, the Passive Anti-Theft

System (PATS) transceiver pings the transponder in the key. The transponder sends the key identification (ID) code to the transceiver and the key ID code is sent to the Instrument Panel Cluster (IPC).

• DTC B10D5:13 (PATS Antenna: Circuit Open) — a continuous and on-demand DTC that sets when there has been a PATS transceiver antenna failure.

This pinpoint test is intended to diagnose the following:

• PATS transceiver

PINPOINT TEST A: DTC B10D5:13

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419-01B-7

PINPOINT TEST A: DTC B10D5:13 (Continued)

Test Step

A1 INSPECT THE PATS TRANSCEIVER FOR CORRECT INSTALLATION

Result / Action to Take

NOTE:

Replacement of the PATS transceiver does not require the PATS keys to be programmed into the IPC again.

• Ignition OFF.

• Verify the PATS transceiver is correctly installed. Refer to Passive

Anti-Theft System (PATS) Transceiver in this section.

• Ignition ON.

• Clear the IPC DTCs.

• Ignition OFF.

• Ignition ON.

• Retrieve the IPC DTCs.

•

Is DTC B10D5:13 retrieved?

Pinpoint Test B: DTC B10D7:87


Yes

INSTALL a new PATS transceiver. REFER to Passive



No

The system is OK.

• DTC B10D7:87 (PATS Key: Missing Message) — a continuous and on-demand DTC that sets if the Instrument Panel Cluster (IPC) does not receive a key read. When this occurs, the vehicle experiences a Passive Anti-Theft System (PATS) no-start.


• PATS key


• IPC

PINPOINT TEST B: DTC B10D7:87

Test Step

B1 RETRIEVE THE DTCs

• Ignition ON.


• Ignition OFF.

• Ignition ON.


•



Yes

GO to B2.

No

If any other IPC DTCs are retrieved, REFER to Section

419-10.

If no DTCs are retrieved, the system is OK. The concern may have been caused by an intermittent concern with the key, the transceiver or the IPC.

B2 CHECK BOTH PATS KEYS

• Obtain both PATS keys from the customer and follow the procedure using one PATS key, then the other. If the customer only has one

PATS key, it is necessary to cut a new PATS key.

• If it is necessary to cut a new PATS key, program the new PATS key.

Refer to Integrated Keyhead Transmitter (IKT) Key Programming

Using Diagnostic Equipment in this section.

• Ignition ON.


• Ignition OFF.

• Ignition ON.


•

Using all existing keys, then the newly programmed key (if applicable), is DTC B10D7:87 present?

Yes

If DTC B10D7:87 was present for both keys or the new

key (if present), GO to B3.

If DTC B10D7:87 was present for the new key, the original key may be damaged and should be replaced.

REPLACE the damaged key with a new key. REFER to

Integrated Keyhead Transmitter (IKT) Key

Programming Using Diagnostic Equipment in this section. CLEAR the DTCs. CYCLE the ignition.

REPEAT the self-test. TEST the system for normal operation.

No

If any other IPC DTCs are retrieved, REFER to Section

419-10.

If no IPC DTCs are retrieved, the system is OK. The concern may have been caused by an intermittent concern with the key, the transceiver or the IPC.

B3 INSTALL A NEW PATS TRANSCEIVER

NOTE: Yes

GO to B4.

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419-01B-8

PINPOINT TEST B: DTC B10D7:87 (Continued)

B3 INSTALL A NEW PATS TRANSCEIVER (Continued)


NOTE:

Do not use the PATS key that may have been programmed in Step B2.

• Ignition OFF.

• Install a new PATS transceiver. Refer to Passive Anti-Theft System

(PATS) Transceiver in this section.

• Ignition ON.


• Ignition OFF.

• Turn the key to the ON position using an existing customer PATS key.


•


No

The system is OK.

B4 CHECK FOR CORRECT IPC OPERATION

• Ignition OFF.

• Disconnect the IPC connector.

• Check for:

— corrosion

— damaged pins

— pushed-out pins

• Connect the IPC connector and make sure it seats correctly.

• Operate the system and verify the concern is still present.

•

Is the concern still present?

Yes

INSTALL a new IPC. REFER to Section 413-01.

RESET the parameters. REFER to Passive Anti-Theft

System (PATS) Parameter Reset in this section.

PROGRAM the PATS keys into the new IPC. REFER to Integrated Keyhead Transmitter (IKT) Key

Programming Using Diagnostic Equipment in this section. CYCLE the ignition. REPEAT the self-test.

No

The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CYCLE the ignition.

REPEAT the self-test.

Pinpoint Test C: DTC B10D7:51


• DTC B10D7:51 (PATS Key: Not Programmed) — a continuous and on-demand DTC that sets when there is an unprogrammed Passive Anti-Theft

System (PATS) key. There may not be a concern with the PATS key itself, but the key must be programmed.


• PATS key

• Instrument Panel Cluster (IPC)

PINPOINT TEST C: DTC B10D7:51

Test Step

C1 RETRIEVE THE DTCs

• If only one key is available, cut a new key and program the keys.



• If both keys are available, program the keys. Refer to Integrated

Keyhead Transmitter (IKT) Key Programming Using Diagnostic

Equipment in this section.

• Insert the first PATS key.

• Ignition ON.


• Ignition OFF.

• Ignition ON.

• Retrieve and record the IPC DTCs.

• Ignition OFF.

• Insert the second PATS key.

• Ignition ON.


• Ignition OFF.


Yes

GO to C2.

No

If DTC B10D7:51 is retrieved for one PATS key,

REPLACE that key and PROGRAM all the keys.

REFER to Integrated Keyhead Transmitter (IKT) Key

Programming Using Diagnostic Equipment in this section. CLEAR the DTCs. CYCLE the ignition.


If DTC B10D7:51 is not retrieved for either key, the system is OK. CHECK all customer PATS keys by attempting to start the vehicle with each key to verify all other PATS keys are programmed.

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419-01B-9

PINPOINT TEST C: DTC B10D7:51 (Continued)

Test Step

C1 RETRIEVE THE DTCs (Continued)

• Ignition ON.


•

Is DTC B10D7:51 retrieved for both PATS keys?


C2 CHECK FOR CORRECT IPC OPERATION


• Check for:

— corrosion

— damaged pins

— pushed-out pins



•


Yes


RESET the parameters in both the IPC and the PCM.

REFER to Passive Anti-Theft System (PATS)

Parameter Reset in this section. PROGRAM the PATS keys into the new IPC. REFER to Integrated Keyhead


Equipment in this section. CYCLE the ignition.


No



Pinpoint Test D: DTC B10D7:8F


• DTC B10D7:8F (PATS Key: Erratic) — a continuous and on-demand DTC that sets when only a partial Passive Anti-Theft System (PATS) key was read. Remote starter equipment can also cause this DTC.


• PATS key


• Instrument Panel Cluster (IPC)

Test Step

D1 RETRIEVE THE DTCs

• If only one key is available, cut a new key and program the keys.




• Ignition ON.


• Ignition OFF.

• Ignition ON.


• Ignition OFF.


• Ignition ON.


• Ignition OFF.

• Ignition ON.


•

Is DTC B10D7:8F retrieved for one or both PATS keys?

D2 INSTALL A NEW PATS TRANSCEIVER

NOTE:


• Ignition OFF.

PINPOINT TEST D: DTC B10D7:8F


Yes

If DTC B10D7:8F is retrieved for one key, REPLACE that key and PROGRAM the new key. REFER to Spare

Key Programming — Using Diagnostic Equipment in this section. CLEAR the DTCs. CYCLE the ignition.


If DTC B10D7:8F is retrieved for both PATS keys, GO to D2.

No

The system is OK. CHECK all the customer PATS keys by attempting to start the vehicle with each key to verify all other PATS keys are programmed.

Yes

GO to D3.

No

The system is OK. CHECK all the customer PATS keys by attempting to start the vehicle with each key to verify all other PATS keys are programmed.

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419-01B-10

PINPOINT TEST D: DTC B10D7:8F (Continued)

D2 INSTALL A NEW PATS TRANSCEIVER (Continued)

• Install a new PATS transceiver. Refer to Passive Anti-Theft System

(PATS) Transceiver in this section.

• Ignition ON.


• Ignition OFF.

• Ignition ON.


•

Are any PATS DTCs retrieved?

D3 CHECK FOR CORRECT IPC OPERATION


• Check for:

— corrosion

— damaged pins

— pushed-out pins



•


Yes


RESET the parameters. REFER to Passive Anti-Theft

System (PATS) Parameter Reset in this section.

PROGRAM the PATS keys into the new IPC. REFER to Integrated Keyhead Transmitter (IKT) Key

Programming Using Diagnostic Equipment in this section. CYCLE the ignition. REPEAT the self-test.

No



Pinpoint Test E: DTC B10D9:87

Refer to Wiring Diagrams Cell 112 Passive Anti-Theft System for schematic and connector information.


The Passive Anti-Theft System (PATS) transceiver receives voltage from the Smart Junction Box (SJB) fuse 36 (5A). The PATS transceiver and the

Instrument Panel Cluster (IPC) communicate on dedicated transmit and receive circuits. The IPC compares the key code stored in memory and sends a signal to the PCM to enable the starter and the fuel injectors if the key code is correct.

• DTC B10D9:87 (PATS Transponder: Missing Message) — a continuous and on-demand DTC that sets when the PATS transceiver signal is not received by the IPC. This DTC can be caused by circuits between the PATS transceiver and the IPC. This can also be caused by using the incorrect

PATS transceiver part number.


• Fuse

• Wiring, terminals or connectors


• IPC

PINPOINT TEST E: DTC B10D9:87

NOTICE:

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

Test Step Result / Action to Take

E1 CHECK THE PATS TRANSCEIVER POWER CIRCUIT FOR VOLTAGE

• Ignition OFF.

• Disconnect: PATS Transceiver C2007.

• Ignition ON.

• Measure the voltage between the PATS transceiver C2007-1, circuit

CBP36 (BU/BN), harness side and ground.

Yes

GO to E2.

No

VERIFY the SJB fuse 36 (5A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. CYCLE the ignition.

REPEAT the self-test. If not OK, REFER to the Wiring

Diagrams Manual to identify the possible causes of the circuit short.

2011 Mustang, 2/2011



PINPOINT TEST E: DTC B10D9:87 (Continued)

Test Step

E1 CHECK THE PATS TRANSCEIVER POWER CIRCUIT FOR VOLTAGE (Continued)


419-01B-11

•

Is the voltage greater than 10 volts?

E2 CHECK THE PATS TRANSCEIVER GROUND CIRCUIT FOR CONTINUITY

• Ignition OFF.

• Measure the resistance between the PATS transceiver C2007-2, circuit GD116 (BK/VT), harness side and ground.

Yes

GO to E3.

•

Is the resistance less than 5 ohms?

E3 CHECK THE PATS TRANSCEIVER RECEIVE CIRCUIT FOR VOLTAGE

No

REPAIR the circuit. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test.

• Connect: PATS Transceiver C2007.

• Ignition ON.

• Measure the voltage by carefully backprobing between the PATS transceiver C2007-4, circuit VRT24 (YE/OG), harness side and ground.

• Ignition OFF.

• Disconnect: IPC C220.


Yes

GO to E6.

•


No

GO to E4.

E4 CHECK THE PATS TRANSCEIVER RECEIVE CIRCUIT FOR A SHORT TO GROUND

Yes

GO to E5.

2011 Mustang, 2/2011




E4 CHECK THE PATS TRANSCEIVER RECEIVE CIRCUIT FOR A SHORT TO GROUND (Continued)

• Measure the resistance between the PATS transceiver C2007-4, circuit VRT24 (YE/OG), harness side and ground.

419-01B-12

•

Is the resistance greater than 10,000 ohms?

E5 CHECK THE PATS TRANSCEIVER RECEIVE CIRCUIT FOR AN OPEN

• Measure the resistance between the IPC C220-23, circuit VRT24 (YE/

OG), harness side and the PATS transceiver C2007-4, circuit VRT24

(YE/OG), harness side.

No


If DTC B10D9:87 is retrieved again, GO to E12.

Yes

GO to E12.

•


E6 CHECK THE PATS TRANSCEIVER TRANSMIT CIRCUIT FOR VOLTAGE

No


NOTE:


• Measure the voltage by carefully backprobing between the PATS transceiver C2007-3, circuit VRT23 (VT/GY), harness side and ground.

Yes




If DTC B10D9:87 is retrieved again, GO to E12.

•


No

GO to E7.

E7 CHECK THE PATS TRANSCEIVER TRANSMIT CIRCUIT FOR A SHORT TO GROUND WITH THE PATS TRANSCEIVER

CONNECTED

2011 Mustang, 2/2011



419-01B-13



CONNECTED (Continued)

• Ignition OFF.


• Measure the resistance between the IPC C220-22, circuit VRT23 (VT/

GY), harness side and ground.

Yes

GO to E9.

No

GO to E8.

•



DISCONNECTED

NOTE:




GY), harness side and ground.

Yes




No


•


E9 CHECK THE PATS TRANSCEIVER TRANSMIT CIRCUIT FOR AN OPEN



GY), harness side and the PATS transceiver C2007-3, circuit VRT23

(VT/GY), harness side.

Yes

GO to E10.

No


2011 Mustang, 2/2011




E9 CHECK THE PATS TRANSCEIVER TRANSMIT CIRCUIT FOR AN OPEN (Continued)

419-01B-14

•


E10 CHECK THE PATS TRANSCEIVER TRANSMIT CIRCUIT FOR VOLTAGE WHILE COMMANDED ON

NOTE:


• Connect: PATS Transceiver C2007.

• Connect: IPC C220.

• Connect the scan tool.

• Ignition ON.

• Enter the following diagnostic mode on the scan tool: IPC

DataLogger.

• Trigger the IPC active command TRANSMIT (TX circuit ON/OFF) to

ON.

•

NOTE:

The IPC can only supply the signal voltage momentarily. It is important to monitor the meter while triggering the active command on.

Measure the voltage by carefully backprobing between the PATS transceiver C2007-3, circuit VRT23 (VT/GY), harness side and ground.

• Ignition OFF.



• Ignition ON.

• Measure the voltage between the PATS transceiver C2007-3, circuit

VRT23 (VT/GY), harness side and ground.

Yes




•

Is the voltage less than 5 volts?

No

GO to E11.

E11 CHECK THE PATS TRANSCEIVER TRANSMIT CIRCUIT FOR A SHORT TO VOLTAGE

Yes


No

GO to E12.

2011 Mustang, 2/2011



PINPOINT TEST E: DTC B10D9:87

E11 CHECK THE PATS TRANSCEIVER TRANSMIT CIRCUIT FOR A SHORT TO VOLTAGE (Continued)

419-01B-15

•

Is any voltage indicated?

E12 CHECK FOR CORRECT IPC OPERATION


• Check for:

— corrosion

— damaged pins

— pushed-out pins



•


Yes








No



Pinpoint Test F: The Anti-Theft Indicator Is Always/Never On


The Passive Anti-Theft System (PATS) uses a visual anti-theft indicator located in the Instrument Panel Cluster (IPC). The anti-theft indicator proves out for

3 seconds when the key is turned to the ON or START position. If there is a PATS concern, the anti-theft indicator either flashes rapidly or glows steadily

(for more than 3 seconds) when the key is turned to the ON or the START position. PATS also flashes the anti-theft indicator every 2 seconds at key off to act as a visual theft deterrent. The anti-theft indicator operation is controlled by the IPC.


• IPC

PINPOINT TEST F: THE ANTI-THEFT INDICATOR IS ALWAYS/NEVER ON

Test Step

F1 CHECK THE ANTI-THEFT INDICATOR FOR CORRECT OPERATION


• Ignition OFF.


• Ignition ON.

• Enter the following diagnostic mode on the scan tool: IPC

DataLogger.

• Trigger the IPC active command THEFT_LMP (anti-theft indicator only) to ON, then OFF.

•

Does the anti-theft indicator illuminate, then turn off?

Yes

GO to F2.

No








F2 CHECK FOR CORRECT IPC OPERATION

2011 Mustang, 2/2011



419-01B-16

PINPOINT TEST F: THE ANTI-THEFT INDICATOR IS ALWAYS/NEVER ON (Continued)

F2 CHECK FOR CORRECT IPC OPERATION (Continued)


• Check for:

— corrosion

— damaged pins

— pushed-out pins



•


Yes








No



Pinpoint Test G: DTC B10DA:86 and/or DTC U0100:00

Refer to Wiring Diagrams Cell 14 Module Communications Network for schematic and connector information.


During each vehicle start sequence, when the key is turned to the START or ON position, the Passive Anti-Theft System (PATS) transceiver reads the PATS key identification code and sends the data to the Instrument Panel Cluster (IPC). If there is no communication on the High Speed Controller Area Network

(HS-CAN) between the IPC and the PCM, DTCs U0100:00 and/or B10DA:86 can set in the IPC and the vehicle can experience a PATS no-start.

If DTC B10DA:61 is present, refer to DTC Charts in this section.

• DTC B10DA:86 (PATS PCM Identifier: Signal Invalid) — a continuous DTC that sets only when the IPC does not receive the expected response from the PCM over the HS-CAN. The fault may not be present at the time of testing. The data sent by the PCM does not match the data expected by the IPC and this DTC is set. This DTC can be caused by the HS-CAN circuits between the IPC and the PCM or by either module. This DTC can also be set if the battery voltage is low.

• DTC U0100:00 (Lost Communication With ECM/PCM "A": No Sub Type Information) — a continuous DTC that sets only when the IPC loses communication with the PCM and the fault may not be present at the time of testing. This DTC can be caused by a HS-CAN circuit concern, the IPC or the PCM.


• Wiring, terminals or connectors

• Low battery state of charge

• IPC

• PCM

PINPOINT TEST G: DTC B10DA:86 AND/OR DTC U0100:00

Test Step

G1 CHECK THE BATTERY STATE OF CHARGE


• Ignition OFF.

• Check the battery state of charge with the battery condition test. Refer to Section 414-01.

•

Does the battery pass the battery condition test?

Yes

GO to G2.

No

INSTALL a new battery. REFER to Section 414-01.

G2 CHECK FOR MODULE COMMUNICATION ON THE HS-CAN


• Ignition ON.

• Carry out the network test using the scan tool.

•

Is the scan tool able to communicate with any of the modules on the HS-CAN?

Yes

REFER to Section 418-00 to diagnose the module that is not communicating with the scan tool.

No

GO to G3.

G3 INSPECT THE HS-CAN CIRCUITRY

• Ignition OFF.

• Inspect all of the HS-CAN circuitry, including the pin crimps, connector fit, corroded/bent/pushed-out/damaged pins and splice integrity in the 4 splices and 36 connections (8 connectors) between the PCM and the IPC.

Yes

GO to G4.

2011 Mustang, 2/2011



419-01B-17

PINPOINT TEST G: DTC B10DA:86 AND/OR DTC U0100:00 (Continued)

G3 INSPECT THE HS-CAN CIRCUITRY (Continued)

•

Does the HS-CAN circuitry pass the component inspection?

No

REPAIR the HS-CAN circuitry as necessary. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test.

TEST the system for normal operation.

G4 CHECK FOR CORRECT PCM OPERATION

• Disconnect all the PCM connectors.

• Check for:

— corrosion

— damaged pins

— pushed-out pins

• Connect all the PCM connectors and make sure they seat correctly.


•


Yes

INSTALL a new PCM. REFER to Section 303-14.



Parameter Reset in this section. CYCLE the ignition.

REPEAT the self-test. TEST the system for normal

operation. If the concern is still present, GO to G5.

No



G5 CHECK FOR CORRECT IPC OPERATION

• Disconnect all the IPC connectors.

• Check for:

— corrosion

— damaged pins

— pushed-out pins

• Connect all the IPC connectors and make sure they seat correctly.


•


Yes








No



Pinpoint Test H: The Vehicle Does Not Start


During each vehicle start sequence, when the key is turned to the START or ON position, the Passive Anti-Theft System (PATS) transceiver reads the PATS key identification code and sends the data to the Instrument Panel Cluster (IPC). If there is a PATS concern, PATS DTCs should be set in the IPC and DTC

P1260 in the PCM. If it is due to a starting system or driveability concern, there is no PATS DTCs in the IPC or the DTC P1260 in the PCM.


• Starting system concern

• PATS concern

PINPOINT TEST H: THE VEHICLE DOES NOT START

Test Step

H1 CHECK FOR COMMUNICATION WITH THE PCM AND IPC


• Ignition ON.

• Carry out the network test using the scan tool.

•

Does the scan tool establish communication with the PCM and the IPC?


Yes

GO to H2.

No

REFER to Section 418-00 to diagnose the module that is not communicating with the scan tool.

H2 CHECK FOR IPC DTCs

• Retrieve the IPC continuous and on-demand DTCs.

•

Are any IPC DTCs present?

Yes

REFER to DTC Charts in this section.

2011 Mustang, 2/2011



419-01B-18

PINPOINT TEST H: THE VEHICLE DOES NOT START (Continued)

H2 CHECK FOR IPC DTCs (Continued)

No

The no-start condition is not PATS-related. REFER to

Section 303-06 or the Powertrain Control/Emissions

Diagnosis (PC/ED) manual to diagnose the cause of the no-start condition.

Pinpoint Test I: DTC B10D7:05


During each vehicle start sequence, when the key is turned to the START or ON position, the Passive Anti-Theft System (PATS) transceiver reads the PATS key identification code and sends the data to the Instrument Panel Cluster (IPC). If there is an inoperative transponder in the Integrated Keyhead Transmitter

(IKT) key that is in the ignition lock cylinder, or if there was a concern during the programming of the IKT key, DTC B10D7:05 can set, and the vehicle experiences a PATS no-start.

• DTC B10D7:05 (PATS Key: System Programming Failures) — a continuous DTC that sets when there was a failure during the key programming procedure.


• PATS key programming concern

• PATS key concern (transponder)

I1

PINPOINT TEST I: DTC B10D7:05

Test Step

CHECK BOTH PATS KEYS

NOTE:

Check to make sure the new PATS keys are approved Ford encoded PATS keys.

Unapproved PATS keys do not always operate correctly over various temperature ranges. (PATS keys from Ford, Rotunda, Strattec or Huf are approved Ford

PATS keys.)

• Obtain both PATS keys from the customer and follow the procedure using one PATS key, then the other. If the customer only has one

PATS key, it is necessary to cut a new PATS key (does not have to be an IKT key).


• If it is necessary to cut a new PATS key, cut the new key to match the original key. Program the PATS keys. Refer to Integrated Keyhead

Transmitter (IKT) Key Programming Using Diagnostic Equipment in this section.


• Ignition ON.


• Ignition OFF.

• Ignition ON.


• Ignition OFF.


• Ignition ON.


Yes

REPLACE the damaged key with the new key that was cut (if present), or CUT a new key to replace the damaged key. DISCARD the damaged key.

PROGRAM the keys. REFER to Integrated Keyhead


Equipment in this section. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.

No

If other IPC DTCs are retrieved, REFER to Section

419-10.

If no IPC DTCs are retrieved, the system is OK.

2011 Mustang, 2/2011



I1

PINPOINT TEST I: DTC B10D7:05 (Continued)

Test Step

CHECK BOTH PATS KEYS (Continued)

• Ignition OFF.

• Ignition ON.


•

Is DTC B10D7:05 present with either key?


419-01B-19

2011 Mustang, 2/2011

Ford Mustang 2011 Anti-theft System Service Manual

Assistant Bot

SECTION 419-01B Anti-Theft — Passive Anti-Theft System (PATS)

Key Features

Frequently Answers and Questions

How does the Passive Anti-theft System (PATS) work in a 2011 Mustang?

What are some common issues with the PATS system in the 2011 Mustang?

How can I diagnose and fix PATS-related issues in my 2011 Mustang?

Related manuals

Ford Mustang 2011 Anti-theft System Service Manual

Assistant Bot

SECTION 419-01B Anti-Theft — Passive Anti-Theft System (PATS)

Key Features

Frequently Answers and Questions

How does the Passive Anti-theft System (PATS) work in a 2011 Mustang?

What are some common issues with the PATS system in the 2011 Mustang?

How can I diagnose and fix PATS-related issues in my 2011 Mustang?

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