Ford Taurus Service Manual: Diagnosis and Testing

Handles, Locks, Latches and Entry Systems

Special Tool(s)

Ford Taurus. Body

Material

Ford Taurus. Body

DTC Charts

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

DDM DTC Chart

Ford Taurus. Body

Ford Taurus. Body

BCM DTC Chart

Ford Taurus. Body

RFA Module DTC Chart

Ford Taurus. Body

Ford Taurus. Body

Symptom Charts

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Symptom Chart - Mechanical

Ford Taurus. Body

Symptom Chart - Electrical

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Tests

Pinpoint Test A: Hard To Open Or Close Door From Either Door Handle

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

The door latch can be actuated from the interior or exterior door handle. When actuated, the door latch releases and allows the door to open. If the door latch or the door hinges have insufficient lubrication or if the striker or door are misaligned, it causes extra force to be used when opening or closing the door.

    Possible Sources
  • Door alignment
  • Door hinges
  • Striker adjustment
  • Door latch

PINPOINT TEST A: HARD TO OPEN OR CLOSE DOOR FROM EITHER DOOR HANDLE

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test B: A Door Is Difficult Or Does Not Open From The Exterior Door Handle

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

The exterior door handle is connected to the door latch with an actuating rod. When the exterior door handle is pulled, the actuating rod pushes down on the latch lever. When the latch lever is moved, the door latch releases, allowing the door to open.

    Possible Sources
  • Broken or binding linkage
  • Exterior door handle reinforcement
  • Door latch

PINPOINT TEST B: A DOOR IS DIFFICULT OR DOES NOT OPEN FROM THE EXTERIOR DOOR HANDLE

Ford Taurus. Body

Pinpoint Test C: A Door Is Difficult Or Does Not Open From The Interior Door Handle

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

The interior door handle is connected to the door latch by an actuating cable. When the interior door handle is pulled, the cable pulls on the latch lever. When the latch lever is moved, the door latch releases, allowing the door to open.

    Possible Sources
  • Broken or binding cable/linkage
  • Door latch

Visual Inspection and Diagnostic Pre-checks

  • For the rear doors, make sure the child proof lock is in the unlock position.

PINPOINT TEST C: A DOOR IS DIFFICULT/DOES NOT OPEN FROM THE INTERIOR DOOR HANDLE

Ford Taurus. Body

Pinpoint Test D: The Exterior Door Release Handle Sticks

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

The exterior door handle is connected to the door latch with an actuating rod. When the exterior door handle is pulled, the actuating rod pushes down on the latch lever. When the latch lever is moved, the door latch releases, allowing the door to open. The handle has a return spring to make sure the handle returns to a closed position.

    Possible Sources
  • Binding linkage
  • Broken handle return spring
  • Door latch

PINPOINT TEST D: THE EXTERIOR DOOR RELEASE HANDLE STICKS

Ford Taurus. Body

Pinpoint Test E: The Interior Door Release Handle Sticks

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

The interior door handle is connected to the door latch by an actuating cable. When the interior door handle is pulled, the cable pulls on the latch lever. When the latch lever is moved, the door latch releases, allowing the door to open. The handle has a return spring to make sure the handle returns to a closed position.

    Possible Sources
  • Binding cable
  • Broken handle return spring
  • Door latch

PINPOINT TEST E: THE INTERIOR DOOR RELEASE HANDLE STICKS

Ford Taurus. Body

Pinpoint Test F: Squeak-Rattle-Chucking Noise From Door

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Possible Sources
  • Door alignment
  • Striker adjustment
  • Door latch

PINPOINT TEST F: SQUEAK-RATTLE-CHUCKING NOISE FROM DOOR

Ford Taurus. Body

Pinpoint Test G: The Manual Door Lock Cylinder Is Inoperative

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

The door lock cylinder is connected to the door latch via a lock rod and can be used to manually lock/unlock the door.

    Possible Sources
  • Bent or binding lock rod and lever
  • Door lock cylinder
  • Door latch

PINPOINT TEST G: THE MANUAL DOOR LOCK CYLINDER IS INOPERATIVE

Ford Taurus. Body

Pinpoint Test H: All Door Locks Are Inoperative

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Door Locks in Handles, Locks, Latches and Entry Systems.

    Possible Sources
  • Fuse
  • Wiring, terminals or connectors
  • RFA module

Visual Inspection and Diagnostic Pre-checks

  • Inspect the BCM fuse 27 (20A) and make sure it is OK.

PINPOINT TEST H: ALL DOOR LOCKS ARE INOPERATIVE

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test I: A Single Or More Than One Door Lock Is Inoperative

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Door Locks in Handles, Locks, Latches and Entry Systems.

    Possible Sources
  • Wiring, terminals or connectors
  • Door latch
  • RFA module

Visual Inspection and Diagnostic Pre-checks

  • Inspect for a binding lock rod.

PINPOINT TEST I: A SINGLE OR MORE THAN ONE DOOR LOCK IS INOPERATIVE

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test J: The Door Locks Operate Only One Way

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Door Locks in Handles, Locks, Latches and Entry Systems.

Refer to Component Description - Door Lock Control Switch in Handles, Locks, Latches and Entry Systems.

BCM DTC Fault Trigger Conditions

Ford Taurus. Body

DDM DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • Wiring, terminals or connectors
  • Door lock control switch
  • DDM
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the door lock control switches for damage.

PINPOINT TEST J: THE DOOR LOCKS OPERATE ONLY ONE WAY

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

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test K: All Door Locks Are Inoperative From One Switch

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Door Locks in Handles, Locks, Latches and Entry Systems.

Refer to Component Description - Door Lock Control Switch in Handles, Locks, Latches and Entry Systems.

    Possible Sources
  • Wiring, terminals or connectors
  • Door lock control switch
  • Network communcation concern

Visual Inspection and Diagnostic Pre-checks

  • Inspect the door lock control switches for damage.

PINPOINT TEST K: ALL DOOR LOCKS ARE INOPERATIVE FROM ONE SWITCH

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test L: The Luggage Compartment Lid Latch Release Is Inoperative

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Luggage Compartment Lid Release in Handles, Locks, Latches and Entry Systems.

RFA Module DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • Wiring, terminals or connectors
  • Luggage compartment lid release switch
  • Luggage compartment lid latch
  • RFA module

PINPOINT TEST L: THE LUGGAGE COMPARTMENT LID LATCH RELEASE IS INOPERATIVE

NOTE: If the luggage compartment lid releases from the interior switch but not the RKE transmitter, GO to Pinpoint Test P.

NOTE: If the luggage compartment lid releases from the interior switch but not the IA feature, GO to Pinpoint Test S.

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test M: The Doors Do Not Lock Or Unlock Using The Keyless Entry Keypad

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Keyless Entry Keypad in Handles, Locks, Latches and Entry Systems.

Refer to Component Description - Keyless Entry Keypad in Handles, Locks, Latches and Entry Systems.

RFA Module DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • Wiring, terminals or connectors
  • Keyless entry keypad
  • RFA module

Visual Inspection and Diagnostic Pre-checks

  • Inspect the keyless entry keypad for damage.
  • Inspect the BCM fuse 7 (7.5A) and make sure it is OK.

PINPOINT TEST M: THE DOORS DO NOT LOCK OR UNLOCK USING THE KEYLESS ENTRY KEYPAD

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test N: The Keyless Entry Keypad Illumination Is Inoperative Or Always On

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Keyless Entry Keypad in Handles, Locks, Latches and Entry Systems.

Refer to Component Description - Keyless Entry Keypad in Handles, Locks, Latches and Entry Systems.

RFA Module DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • Wiring, terminals or connectors
  • Keyless entry keypad
  • RFA module

Visual Inspection and Diagnostic Pre-checks

  • Inspect the keyless entry keypad for damage.

PINPOINT TEST N: THE KEYLESS ENTRY KEYPAD ILLUMINATION IS INOPERATIVE OR ALWAYS ON

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test O: The RKE Transmitter Is Inoperative

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

Refer to System Operation - Remote Keyless Entry (RKE) in Handles, Locks, Latches and Entry Systems.

Refer to Component Description - Integrated Keyhead Transmitter (IKT) in Handles, Locks, Latches and Entry Systems.

RFA Module DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • IA key
  • IA key battery
  • IA key button pressed a substantial amount of times while outside the range of the vehicle
  • IA key programming
  • TPM module
  • RFA module

Visual Inspection and Diagnostic Pre-checks

  • Inspect the IA key for damage.

PINPOINT TEST O: THE RKE TRANSMITTER IS INOPERATIVE

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test P: An Individual Button Or Feature Is Inoperative From The RKE Transmitter

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

Refer to System Operation - Remote Keyless Entry (RKE) in Handles, Locks, Latches and Entry Systems.

Refer to Component Description - Integrated Keyhead Transmitter (IKT) in Handles, Locks, Latches and Entry Systems.

    Possible Sources
  • Door lock system concern
  • Horn system concern
  • Luggage compartment lid release system concern
  • Factory remote start system concern
  • Turn signal system concern
  • IA key

Visual Inspection and Diagnostic Pre-checks

  • Inspect the IKT for damage.

PINPOINT TEST P: AN INDIVIDUAL BUTTON OR FEATURE IS INOPERATIVE FROM THE RKE TRANSMITTER

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test Q: The RKE Transmitter Has Poor Range Performance

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

The RKE transmitter has a normal operating range of 20 m (66 ft). The TPM module has an internal antenna to receive the RKE transmitter signal.

    Possible Sources
  • IA key
  • IA key battery
  • Aftermarket system
  • High power devices
  • TV/radio transmission towers
  • TPM module

Visual Inspection and Diagnostic Pre-checks

  • Inspect the IA key for damage.
  • Inspect the IA key battery.
  • Inspect for aftermarket RKE systems.

PINPOINT TEST Q: THE RKE TRANSMITTER HAS POOR RANGE PERFORMANCE

NOTE: A least 2 programmed IA keys must be present to begin diagnosis of the RKE system.

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test R: A Front Door IA Feature Is Inoperative

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Intelligent Access (IA) in Handles, Locks, Latches and Entry Systems.

RFA Module DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • Wiring, terminals or connectors
  • IA antenna (part of the exterior front door handle)
  • Lock/unlock sensors (part of the exterior front door handle)
  • IA key
  • TPM module
  • RFA module

Visual Inspection and Diagnostic Pre-checks

  • Inspect the exterior front door handle for damage.
  • Inspect the IA key for damage.

PINPOINT TEST R: A FRONT DOOR IA FEATURE IS INOPERATIVE

NOTE: The IA feature is a programmable parameter and can be enabled/disabled with a scan tool. If the feature is disabled, the IA feature to enter the vehicle and passive starting is inoperative. To start the vehicle, the IA key must be placed in the backup transceiver slot.

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test S: The Luggage Compartment Lid IA Feature Is Inoperative

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Intelligent Access (IA) in Handles, Locks, Latches and Entry Systems.

RFA Module DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • Wiring, terminals or connectors
  • Exterior luggage compartment lid release switch
  • Luggage compartment lid IA antenna
  • IA key
  • TPM module
  • RFA module

Visual Inspection and Diagnostic Pre-checks

  • Inspect the rear bumper cover for damage.
  • Inspect the exterior luggage compartment lid release switch for damage.
  • Inspect the IA key for damage.

PINPOINT TEST S: THE LUGGAGE COMPARTMENT LID IA FEATURE IS INOPERATIVE

NOTE: The IA feature is a programmable parameter and can be enabled/disabled with a scan tool. If the feature is disabled, the IA feature to enter the vehicle and passive starting is inoperative. To start the vehicle, the IA key must be placed in the backup transceiver slot.

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test T: DTCs B106E, B106F

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

The DDM controls the output of several vehicle systems by means of solid state drivers. A DTC sets when an overload occurs on any of these drivers. The module also tracks the number of repetitive faults on each of these circuits, and then it compares that number of overloads to 3 progressive thresholds established for each circuit. If the third threshold has not been met, the DTC for the affected circuit can be cleared by eliminating the fault, clearing the DTCs and then running a self-test.

At the point that each of the first 2 thresholds is met, DTC B106E sets along with a DTC related to the affected circuit. Once the final (third) threshold has been met, the affected output is permanently disabled, and DTC B106F sets, at which time the DDM must be replaced.

DDM DTC Fault Trigger Conditions

Ford Taurus. Body

When DTC B1342 is set because the module has reached a third threshold and the DDM has permanently disabled an output, no DTCs can be cleared from the DDM. Using the module self-test to confirm a repair is not possible and a measurement using a digital multimeter of the affected output circuit is required to make sure the fault condition no longer exists.

    Possible Sources
  • DDM output circuit
  • DDM

PINPOINT TEST T: DTCs B106E, B106F

Ford Taurus. Body

Pinpoint Test U: DTC B1317

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

The DDM constantly monitors the voltage supply circuit. If the voltage exceeds a set parameter, the DDM sets a DTC.

DDM DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • Charging system concern
  • DDM

PINPOINT TEST U: DTC B1317

NOTE: DTC B1317 may be stored in the module memory due to previous battery charging or vehicle jump starting events.

Ford Taurus. Body

Pinpoint Test V: DTC B1318

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 13, Power Distribution/SJB for schematic and connector information.

Normal Operation and Fault Conditions

The DDM constantly monitors the voltage supply circuit. If the voltage exceeds a set parameter, the DDM sets a DTC.

DDM DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • Charging system concern
  • High resistance
  • DDM

PINPOINT TEST V: DTC B1318

Ford Taurus. Body

Ford Taurus. Body

Ford Taurus. Body

Pinpoint Test W: DTC U0140

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

The DDM and the BCM communicate using the MS-CAN. Messages are exchanged between the modules on the MS-CAN for the purposes of determining what functions are being carried out.

DDM DTC Fault Trigger Conditions

Ford Taurus. Body

    Possible Sources
  • Network communication concern
  • DDM
  • BCM

PINPOINT TEST W: DTC U0140

Ford Taurus. Body

Ford Taurus. Body

    Specifications, Description and Operation
    SPECIFICATIONS Material  Torque Specifications DESCRIPTION AND OPERATION Handles, Locks, Latches and Entry Systems Overview The power lock/unlock feature locks or unlocks the doors upon a custo ...

    General Procedures
    Keyless Entry Keypad Code Programming Remote Function Actuator (RFA) Module Keyless Entry Keypad Code Reset NOTE: This step is for transferring the factory keyless entry keycode from the BC ...

    Other materials:

    Removal and Installation
    Safety Belt Anchor and Pretensioner Special Tool(s) Removal and Installation  WARNING: All safety belt components must be inspected and corrected as part of any collision repair. Inspect all safety belt components as prescribed by Safety Belt Inspection and Repair After a Collision found in ...

    Getting the services you need
    Warranty repairs to your vehicle must be performed by an authorized dealer. While any authorized dealer handling your vehicle line will provide warranty service, we recommend you return to your selling authorized dealer who wants to ensure your continued satisfaction. Please note that certain ...

    In-Vehicle Repair
    Intake Manifold Removal NOTICE: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces that enters the oil passages, coolant passages or the oil pan, may cause engine failure. NOTICE: Whene ...