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Air Bag Restraint Systems Ford Explorer Sport Trac I

Airbag 24 illustrations ~27694 words

DESCRIPTION & OPERATION

WARNINGAccidental air bag deployment is possible. Personal injury may result. Read and follow all WARNINGS and AIR BAG SAFETY PRECAUTIONS before working on air bag system or related components.

The Supplemental Restraint System (SRS), also known as air bag system, is designed to provide increased accident protection for driver and passenger by deploying front air bags in a front-end collision or side air bags in a side collision. The air bags, deploy in about 40 milliseconds after impact sensors close. Air bag system is designed to be used with 3-point seat belts.

During a front-end collision, the Restraints Control Module (RCM), using input from impact sensor, discriminates between an event that warrants air bag deployment and an event that does not. In a crash of sufficient force, the RCM signals the air bag modules to simultaneously deploy.

During a side or lateral collision, the RCM using inputs from right and/or left side crash sensor, discriminates between an event that warrants air bag deployment and an event that does not. In a crash of sufficient force, the RCM signals the right and/or left side (seat) air bag module to deploy.

Air bag system includes the following components: RCM, impact and safing sensors (located inside the RCM), back-up power supply (also located inside the RCM), right and left side crash sensors (at base of B-pillars), driver-side air bag module, passenger-side air bag module, side air bag modules (located behind outboard bolster of right and left seat backs), AIR BAG warning light, clockspring and associated wiring harnesses. See COMPONENT LOCATIONS .

BACK-UP POWER SUPPLY

Back-up power supply is located inside Restraints Control Module (RCM). If battery or battery cables are damaged in a collision before sensors close circuit, back-up power supply will supply necessary electrical energy to deploy air bags. Back-up power supply will hold a deployment charge for approximately one minute after negative battery cable is disconnected.

CLOCKSPRING

The clockspring assembly is used to transfer electrical signals from steering column wiring harness to driver-side air bag module.

DRIVER-SIDE AIR BAG MODULE

When impact sensor and safing sensor close, signaling an impact, ignitor triggers inflator. During ignition, sodium azide reacts with copper oxide, producing nitrogen gas, which inflates air bag.

When air bag deploys, tear-seams molded into steering wheel trim cover separate, allowing inflation of air bag assembly. Driver-side air bag module is not serviceable and must be replaced as a complete assembly.

PASSENGER-SIDE AIR BAG MODULE

When impact sensor and safing sensor close, signaling an impact, air bag igniters trigger inflator. When air bag is activated, instrument panel trim cover tears at seams and hinges, allowing inflation. Passenger-side air bag module is only serviced as a complete assembly.

RESTRAINTS CONTROL MODULE (RCM)

RCM contains a microcomputer, which monitors electrical system components and connections. RCM performs a system self-check of air bag system internal circuits every time ignition switch is turned to RUN position. RCM also operates AIR BAG warning light during initial system self-check and whenever a system fault is detected.

Faults are translated into a Light Flash Code (LFC), which is displayed through flashing of AIR BAG warning light. A LFC is a series of flashes and pauses of the AIR BAG warning light, which represents a 2-digit number and is always displayed at least twice. The RCM also communicates through the Data Link Connector (DLC) current and historical Diagnostic Trouble Codes (DTCs). If a system fault exists and AIR BAG warning light is malfunctioning, an audible tone will sound, indicating need for service.

SIDE AIR BAG MODULE

The seat back cover is specially designed to allow air bag deployment. In certain lateral collisions, the side air bag module will inflate, even if the seat is unoccupied. The side air bag is designed to inflate between the door panel and occupant, adding enhanced protection.

SIDE CRASH SENSOR

The side crash sensor monitors the severity of a lateral crash event. If the crash event is severe enough, the side crash sensor signals Restraints Control Module (RCM) to deploy the appropriate side air bag module.

COMPONENT LOCATIONS

Component(1) Location
ClockspringOn steering column, behind steering wheel
Driver-side air bag moduleCenter of steering wheel
Passenger-side air bag moduleRight-side of instrument panel, above glove box
Restraints control moduleOn tunnel, under center of instrument panel
Side air bag delete resistor (2)On side air bag harness connectors, under front seats
Side air bag modulesOutboard bolster of both front seat backs
Side crash sensorsAt base of B-pillar
(1) (Scheme 54)& (Scheme 53). (2) On models not equipped with side air bags.
(2)On models not equipped with side air bags.

RESTRAINT SYSTEM COMPONENT LOCATIONS

Scheme 53

Scheme 53
Scheme 53

Scheme 54

Scheme 54
Scheme 54

SYSTEM OPERATION CHECK

  1. When checking air bag system operation (also known as prove out system), and upon completion of each diagnostic test, check for faults in air bag system. To check system, turn ignition switch to RUN position. If AIR BAG warning light illuminates for 6 seconds and then goes out, air bag system is functioning properly and no faults exist.
  2. If a fault is detected in air bag system during initial system check, AIR BAG warning light will flash a code sequence, indicating a fault in system. Count number of flashes. Number of flashes represents a code number used to diagnose air bag system. See «DIAGNOSTICS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__diagnostics) . If AIR BAG warning light either fails to light or stays on continuously, go to «DIAGNOSTIC SYMPTOMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table.
  3. If a system fault exists and AIR BAG warning light fails to light, an audible tone will be heard, indicating AIR BAG warning light is out and service is required.

AIR BAG SAFETY PRECAUTIONS

Observe these precautions when working with air bag system

  1. Disable air bag system before servicing any air bag system or steering column components. Failure to do so may result in accidental air bag deployment and personal injury. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM..
  2. Wait one minute after disabling air bag system before working on vehicle. Back-up power supply holds a deployment charge for approximately one minute after positive battery cable is disconnected. Servicing air bag system before one minute may cause accidental air bag deployment and possible personal injury.
  3. Because of critical system operating requirements, DO NOT service air bag sensors, clockspring, restraints control module or air bag module. Repairs are made by replacement only.
  4. Always wear safety glasses whenever servicing an air bag equipped vehicle or handling an air bag.
  5. When carrying a live air bag module, ensure air bag module and trim cover are pointed away from your body. This minimizes chance of injury in event of an accidental deployment.
  6. When placing a live air bag module on a bench or other surface, always face air bag module and trim cover up and away from surface. This will reduce motion of module if it is accidentally deployed.
  7. After deployment, air bag surface may contain deposits of sodium hydroxide, which may irritate skin. Sodium hydroxide is a product of gas generant combustion. Always wear gloves and safety glasses when handling a deployed air bag. Wash your hands using mild soap and water. Follow correct disposal procedures. See «DISPOSAL PROCEDURES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disposal-procedures) .
  8. If scrapping a vehicle with an undeployed air bag module, air bag must be deployed. See «DISPOSAL PROCEDURES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disposal-procedures) .
  9. If a part is replaced and NEW part does not correct condition, reinstall original part and perform diagnostic procedure again.
  10. Never probe connectors on air bag module. Doing so may cause air bag deployment and/or personal injury.
  11. Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors.
  12. Instruction to disconnect always refers to connector. DO NOT remove component from vehicle if instructed to disconnect.
  13. After any servicing, ensure AIR BAG warning light does not indicate any fault codes. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) .
  14. Replace air bag module if trim cover (deployment doors) is marred or damaged. DO NOT repaint trim cover. Paint may degrade cover material. Replace air bag module as necessary.
  15. If vehicle is involved in collision in which center tunnel area is damaged, inspect RCM mounting bracket for deformation. If damaged, RCM must be replaced whether or not air bags have deployed. Additionally, ensure RCM mounting area is restored to its original condition.

CLOCKSPRING CENTERING

WARNINGPersonal injury is possible. Operating vehicle with improperly centered clockspring may damage clockspring, and in the event of collision, cause air bag deployment malfunction. If clockspring rotor has moved or if unsure of rotor position, perform clockspring centering procedure. See CLOCKSPRING CENTERING under ADJUSTMENTS.
CAUTIONDamage to clockspring is possible. Over-rotating clockspring rotor can damage clockspring. Internal ribbon wire acts as a stop, and if over-rotated, can be broken from its internal connection. When slight resistance is felt during rotation, internal ribbon wire is at end of travel.

While holding clockspring outer housing stationary, depress clockspring locking tab to release rotor. While holding clockspring locking tab in released position, turn rotor counterclockwise until slight resistance is felt (end of travel). Turn clockspring rotor clockwise about 3 turns. Release clockspring locking tab. DO NOT allow clockspring to move from this position.

DISABLING & ACTIVATING AIR BAG SYSTEM

WARNINGUnintentional air bag module deployment is possible. Personal injury may result. Back-up power supply holds a deployment charge for approximately one minute after negative battery cable is disconnected. Wait one minute after disabling air bag system before working on vehicle.
CAUTIONVehicle computer and memory systems may lose memory data when battery is disconnected. Driveability problems may result. Vehicle computer may need to complete relearn cycle. See Computer Relearn Procedures in the Reference Information section.

DISABLING SYSTEM

WARNINGUnintentional air bag module deployment is possible. Personal injury may result. Never use radio key code (memory) savers when working on air bag system.

Note. The following component replacement deactivation procedure should not be used when diagnosing air bag system. If diagnosing air bag system, see DIAGNOSTICS DISABLING PROCEDURE .

Component Replacement Disabling Procedure

This procedure should only be used when replacing air bag system components.

  1. Record pre-set radio frequencies for reprogramming, if equipped. Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.
  2. Remove hood release lever mounting bolts and disconnect lever. Remove lower steering column opening finish panel screws. Pull out on finish panel to release retaining clips and remove panel. Remove lower steering column opening finish panel reinforcement bolts and reinforcement.
  3. Push in on retaining tab and disconnect clockspring electrical connector, located at base of steering column. Install Air Bag Simulator (418-F088/105-R0012) to harness side of clockspring electrical connector. See «AIR BAG SIMULATOR»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-simulator-seats-installed) . Remove passenger-side air bag module. See «PASSENGER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Connect Air Bag Simulator (418-F088/105-R0012) to passenger-side air bag vehicle harness connector (in place of air bag).
  4. Connect negative battery cable. Move and tilt front seats to highest and most forward position. Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy. CAUTION: Removing side air bag bridge resistor can cause low resistance fault. AIR BAG warning light illumination and erroneous Diagnostic Trouble Code (DTC) will result. Some models are not equipped with side air bags. Side air bag bridge resistors are installed in place of side air bags on these models. Do not remove side air bag bridge resistors unless directed.
  5. On models equipped with side air bags, remove right side air bag connector tie-strap. Push in tab on right side air bag module connector and disconnect connector. Install Air Bag Simulator (418-133/40-009) on harness side of side air bag module connector. Repeat procedure for left side air bag module.
  6. On all models, connect negative battery cable. With air bag simulators installed at all deployable air bag system devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) . Disconnect negative battery cable.

Note. The following diagnostics deactivation procedure should not be used when replacing air bag system components. If replacing air bag system components, see COMPONENT REPLACEMENT DISABLING PROCEDURE .

Diagnostics Disabling Procedure (Seats Removed)

This procedure should only be used when performing air bag system diagnostics or repairs.

  1. Record pre-set radio frequencies for reprogramming, if equipped. Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.
  2. Remove driver-side air bag module. See «DRIVER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Connect Air Bag Simulator (418-F088/105-R0012) to clockspring connector at top of steering column (in place of air bag). See «AIR BAG SIMULATOR»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-simulator-seats-installed) .
  3. Remove passenger-side air bag module. See «PASSENGER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Connect Air Bag Simulator (418-F088/105-R0012) to passenger-side air bag vehicle harness connector (in place of air bag). Remove front seats. See «FRONT SEAT»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . CAUTION: Removing side air bag bridge resistor can cause low resistance fault. AIR BAG warning light illumination and erroneous Diagnostic Trouble Code (DTC) will result. Some models are not equipped with side air bags. Side air bag bridge resistors are installed in place of side air bags on these models. Do not remove side air bag bridge resistors unless directed.
  4. On models equipped with side air bags, install Air Bag Simulators (418-133/40-009) on harness side of right and left side air bag module harness connectors. On all models, connect negative battery cable.

General Disabling Procedure (Seats Installed)

WARNINGUnintentional air bag module deployment is possible. Personal injury may result. The following general deactivation procedure should not be used when performing air bag diagnostics or repairs. See COMPONENT REPLACEMENT DISABLING PROCEDURE or DIAGNOSTICS ACTIVATING PROCEDURE .

This procedure should only be used when performing repairs not related to air bag system, including seat systems (lumbar, climate control, heated seat, power seat track, etc.).

  1. Record pre-set radio frequencies for reprogramming, if equipped. Move and tilt front seats highest and most rearward position. Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.
  2. Remove hood release lever mounting bolts and disconnect lever. Remove lower steering column opening finish panel screws. Pull out on finish panel to release retaining clips and remove panel. Remove lower steering column opening finish panel reinforcement bolts and reinforcement. Push in on retaining tab and disconnect clockspring electrical connector, located at base of steering column. Install Air Bag Simulator (418-F088/105-R0012) to harness side of clockspring electrical connector. See «AIR BAG SIMULATOR»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-simulator-seats-installed) .
  3. Remove passenger-side air bag module. See «PASSENGER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Connect Air Bag Simulator (418-F088/105-R0012) to passenger-side air bag vehicle harness connector (in place of air bag). CAUTION: Removing side air bag bridge resistor can cause low resistance fault. AIR BAG warning light illumination and erroneous Diagnostic Trouble Code (DTC) will result. Some models are not equipped with side air bags. Side air bag bridge resistors are installed in place of side air bags on these models. Do not remove side air bag bridge resistors unless directed.
  4. On models equipped with side air bags, disconnect side air bag module connectors. Install Air Bag Simulators (418-133/40-009) on harness side of right and left side air bag module connectors. On all models, connect negative battery cable.

Component Replacement Activating Procedure (Seats Installed)

  1. On models equipped with side air bags, remove air bag simulators from right and left side air bag module harness connectors and reconnect connectors.
  2. On all models, connect negative battery cable. Move and tilt front seats to lowest and most rearward position. Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy. Remove air bag simulator from passenger-side air bag module harness connector and reconnect connectors. Install passenger-side air bag module.
  3. Remove air bag simulator from clockspring harness connector and reconnect connectors. Install lower steering column opening finish panel reinforcement and finish panel. Install hood release lever.
  4. Connect negative battery cable. With all air bags installed and connected, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) . Reprogram pre-set radio frequencies and set clock.

Diagnostics Activating Procedure (Seats Removed)

  1. Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.
  2. Install front seats. On models with side air bags, remove air bag simulators from left and right side air bag module harness connectors and reconnect connectors. Remove air bag simulator from passenger-side air bag module harness connector. Install passenger-side air bag module.
  3. Remove air bag simulator from upper clockspring connector and install driver-side air bag module. Reconnect negative battery cable. Perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) . Reprogram pre-set radio frequencies and set clock.

General Activating Procedure (Seats Installed)

  1. Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.
  2. On models equipped with side air bags, remove air bag simulators from left and right side air bag module harness connectors and reconnect connectors. On all models, remove air bag simulator from passenger-side air bag module harness connector. Install passenger-side air bag module.
  3. Remove air bag simulator from clockspring harness connector and reconnect connectors. Install lower steering column opening finish panel reinforcement and finish panel. Install hood release lever. Reconnect negative battery cable. Perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) . Reprogram pre-set radio frequencies and set clock.

AIR BAG SIMULATOR (SEATS INSTALLED)

To remove risk of accidental air bag deployment while diagnostics are performed, Air Bag Simulators (418-F088/105-R0012 and 418-133/40-009) or equivalent are required. (Scheme 55) An air bag simulator is a 2-ohm resistor with appropriate connector and is used to simulate air bag module connection to the system. DO NOT short-circuit air bag module connections with a zero-ohm jumper wire. If zero-ohm jumper is used, a Light Flash Code (LFC) will be displayed.

Scheme 55

Scheme 55: AIR BAG SIMULATOR (SEATS INSTALLED)
Scheme 55: AIR BAG SIMULATOR (SEATS INSTALLED)

DISPOSAL PROCEDURES

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Air bag disposal may be necessary in following situations

  1. Scrapping vehicle with deployed air bag.
  2. Scrapping vehicle with live air bag.
  3. Disposal of a live but electrically faulty air bag module.
  4. Disposal of a deployed air bag module.
ConditionInstructions
Module replacement
Deployed air bag(1) Dispose of in usual manner
Faulty but live air bag(2) Return for disposal
Vehicle to be scrapped
Deployed air bag(1) Dispose of in usual manner
Live air bag(3) Deploy air bag
(1) Contact vehicle manufacturer for proper disposal instructions. (2) See UNDEPLOYED AIR BAG-FAULTY UNIT . (3) See SCRAPPED VEHICLE .
(1)Contact vehicle manufacturer for proper disposal instructions.
(3)See SCRAPPED VEHICLE .

AIR BAG DISPOSAL PROCEDURES

DEPLOYED AIR BAG (SEATS INSTALLED)

Dispose of deployed air bag module as any other part. Air bag module components are not reusable.

UNDEPLOYED AIR BAG-FAULTY UNIT (SEATS INSTALLED)

If an undeployed air bag module is diagnosed as faulty, remove faulty device and return intact to Ford Motor Company for proper disposal. Return carton for warranty claim credit. Air bag must be packaged and shipped according to U.S. Department of Transportation procedures. Retain replacement packaging including label. DO NOT deploy air bag.

SCRAPPED VEHICLE (SEATS INSTALLED)

Note. Do not dispose of undeployed air bag modules or pretensioners without first deploying devices. If this is not possible through procedure outlined, contact vehicle manufacturer for further instructions.

If vehicle is to be scrapped, undeployed air bags must first be deployed. Use the following procedures for deployment of air bags.

Remote Deployment Of AIR Bag (Seats Installed)

This procedure is to be used when a vehicle with a live driver-side, passenger-side or side (seat) air bag is to be scrapped.

WARNINGAir bags being deployed may cause objects to be projected away from air bag. Also, loud noise occurs during deployment. Personal injury and hearing damage may result. Perform remote deployment outdoors and keep all personnel at least 20 feet (6.09 m) away deployment area. Deploy air bags with trim cover or deployment door facing upward. Wear safety goggles and hearing protection during deployment procedure.
  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Remove appropriate air bag module. See «REMOVAL & INSTALLATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__removal-installation). On driver and passenger-side air bag modules, cut and strip wires near module electrical connector.
  2. On all air bag modules, obtain 2 wires, each at least 20 gauge and 20 feet (6.09 m) or longer. Place device to be deployed on flat surface in an open outdoor area with trim cover (deployment side) facing up.
  3. On driver and passenger-side air bag modules, connect one end of each 20-foot wire to end of each stripped device wire. (Scheme 56)or (Scheme 57). On side air bag modules, connect one end of each 20-foot wire to connector pins on air bag module. (Scheme 57) On all air bag modules, fully extend 20-foot wire. Deploy device by touching loose ends of both wires to 12-volt battery terminals. If successful, a loud noise will be heard and bag material will be visible. Allow at least 10 minutes for cooling before handling device.
  4. Device is now inoperative and may be disposed of as any other part to be scrapped. If device does not deploy, device is faulty. Contact vehicle manufacturer for further instructions on disposal procedures.

Scheme 56

Scheme 56
Scheme 56

Scheme 57

Scheme 57
Scheme 57

Scheme 58

Scheme 58
Scheme 58

POST-COLLISION INSPECTION

When a vehicle has been involved in a collision, certain components of the passive restraint system must be inspected or replaced. See AIR BAG/SRS COMPONENT INSPECTION & REPLACEMENT TABLES article in the GENERAL INFORMATION section.

REMOVAL & INSTALLATION

WARNINGUnintentional air bag module deployment is possible. Personal injury may result. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . After component replacement, perform system operation check. See SYSTEM OPERATION CHECK . Unintentional air bag module deployment is possible. Personal injury may result. Never use radio key code (memory) savers when working on air bag system.
CAUTIONVehicle memory systems may lose memory data when battery is disconnected. Driveability problems may result. Vehicle computer may need to complete relearn cycle. See Computer Relearn Procedures in the Reference Information section.
WARNINGOperating vehicle with improperly centered clockspring may damage clockspring, and in the event of collision, cause air bag deployment malfunction. Personal injury may result. If clockspring rotor has moved or if unsure of rotor position, perform clockspring centering procedure. See CLOCKSPRING CENTERING under ADJUSTMENTS.

Removal

  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Clockspring is located on steering column between steering wheel and combination switch. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM.
  2. Ensure front wheels are in straight-ahead position. Remove steering wheel. See «STEERING WHEEL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__steering-wheel). Loosen, but DO NOT remove 4 steering column-to-instrument panel mounting bolts (enough to remove upper steering column shroud). Remove tilt wheel handle and shank, if equipped.
  3. Remove lower steering column shroud screws and shroud. Remove upper instrument panel steering column cover. Position ignition switch lock cylinder to RUN position. Using small drift, push upward on cylinder release tab through hole in ignition switch lock cylinder housing while pulling lock cylinder outward. (Scheme 59) Remove upper steering column shroud. Remove screw and Passive Anti-Theft System (PATS) transmitter.
  4. Remove key-in-ignition warning indicator switch from ignition switch lock cylinder housing. Separate clockspring electrical connectors from retaining bracket and disconnect from wiring harness. Separate clockspring wire harness from clips on steering column. Pry clockspring retaining clips loose and remove clockspring. (Scheme 60)

Installation

  1. NEW clockspring is centered and locked in place, using locking mechanism pull ring. If installing NEW clockspring, remove locking mechanism pull ring and DO NOT allow clockspring to move from centered position. If clockspring rotor has moved or if unsure of clockspring rotor position, center clockspring. See «CLOCKSPRING CENTERING»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clockspring-centering) under ADJUSTMENTS. Maintain clockspring centered position. NOTE: Slight turning of clockspring is allowable during installation to properly align clockspring to steering column.
  2. Position clockspring onto steering column. Engage clockspring retaining clips. Position clockspring wiring harness down side of steering column and connect harness to retainers. Remove air bag simulator from clockspring harness connector and reconnect connectors.
  3. To complete installation, reverse removal procedure. DO NOT install driver-side air bag at this time. Tighten steering column-to-instrument panel mounting bolts to specification. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Install Air Bag Simulator (418-F088/105-R0012) to upper clockspring connector.
  4. Connect negative battery cable. With air bag simulators installed at all deployable air bag system devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) . Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.
  5. Remove air bag simulator from upper clockspring connector. Install driver-side air bag module. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Ensure air bag system is functioning properly. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

Scheme 59

Scheme 59
Scheme 59

Scheme 60

Scheme 60
Scheme 60
  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Driver-side air bag module is located in center of steering wheel. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM.
  2. Remove 2 back cover plugs on back side of steering wheel. Remove driver-side air bag module mounting bolts. Pull air bag module away from steering wheel. Disconnect clockspring electrical connector from air bag module. Remove air bag module from steering wheel.
  3. Remove air bag simulator from clockspring harness connector. Connect Air Bag Simulator (418-F088/105-R0012) to upper clockspring connector, at top of steering column. Connect negative battery cable. With air bag simulators installed at all deployable air bag system devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) . Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.
  1. Remove air bag simulator from upper clockspring connector. To install, reverse removal procedure. Tighten driver-side air bag module mounting bolts to specification. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Connect negative battery cable.
  2. With air bag simulators installed at all remaining deployable devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) . Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM.
  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . On models equipped with side air bags, disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Leave negative battery cable connected.
  2. On all models, position seat to access and remove seat track front anchor bolts. Move front seat to most forward and highest position. Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.
  3. Remove seat belt buckle support bolt cover plug. Using Seat Bolt Bit (501-010), remove seat belt buckle anchor bolt. Disconnect seat belt warning indicator electrical connector. Remove seat track rear anchor bolt covers and bolts. Remove front seat.

Note. Front seat track anchor bolts must be tightened in sequence.

  1. Position front seat in vehicle. Install all seat track anchor bolts and hand tighten. Remove air bag simulator from side air bag harness connector and reconnect all seat electrical connectors. Install seat wire harness tie-strap. Connect negative battery cable. Position seat rearward. With air bag simulators install at all remaining deployable devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) .
  2. Tighten front seat track anchor bolts to specification in sequence as follows (reposition front seat as necessary to access bolts): seat track inboard front anchor bolt, seat track outboard front anchor bolt, seat track inboard rear anchor bolt and seat track outboard rear anchor bolt. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications) .
  3. To complete installation, reverse removal procedure. Tighten seat belt buckle anchor bolt to specification. On models equipped with side air bags, activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. On all models, check AIR BAG warning light to ensure system is functioning properly.

GENERIC ELECTRONIC MODULE (GEM)

Note. If installing new GEM, module configuration information must downloaded from existing GEM to scan tool. After new GEM has been installed, use scan tool to upload configuration data to new module.

  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disconnect negative battery cable. Using Radio Removing Tool (415-001/T87P-19061-A), pull out audio unit from instrument panel. Disconnect electrical connectors and remove audio unit.
  2. Remove center instrument panel finish panel screws and pull panel away from instrument panel. Disconnect finish panel electrical connectors and remove finish panel. Remove GEM mounting bolt and disconnect GEM electrical connectors. (Scheme 61) Remove GEM.
  3. To install, reverse removal procedure. Tighten fasteners to specification. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications). Connect negative battery cable. Check AIR BAG warning light for proper system function. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check).

Scheme 61

Scheme 61
Scheme 61
  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disconnect negative battery cable. Using Radio Removing Tool (415-001/T87P-19061-A), pull out audio unit from instrument panel. Disconnect electrical connectors and remove audio unit.
  2. Remove instrument center panel finish panel screws and pull panel away from instrument panel. Disconnect finish panel electrical connectors and remove finish panel.
  3. Remove hood release lever mounting bolts and disconnect lever. Remove lower steering column opening finish panel screws. Pull out on finish panel to release retaining clips and remove panel. Remove lower steering column opening finish panel reinforcement bolts and reinforcement.
  4. Position column gearshift lever in LOW position. Remove instrument cluster finish panel screws and position finish panel to access electrical connectors. Disconnect finish panel electrical connectors. Remove instrument cluster mounting screws. (Scheme 62) Remove automatic transmission range indicator. Disconnect instrument cluster electrical connectors and remove cluster.
  5. To install, reverse removal procedure. Tighten fasteners to specification. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications). Connect negative battery cable. Check AIR BAG warning light for proper system function. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check).

Scheme 62

Scheme 62
Scheme 62
CAUTIONPulling on edges of air bag deployment doors can damage air bag module. Improper air bag module deployment may result. When removing air bag module from instrument panel, push on rear of air bag module by reaching in through glove box opening.
  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Passenger-side air bag module is located in right side of instrument panel above glove box. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM.
  2. Open glove box door. Push in 2 glove box door tabs and position door fully downward. Working through glove box opening, remove passenger-side air bag module mounting bolts. (Scheme 63) Reaching in though glove box opening, push on rear of air bag module. Disconnect passenger-side air bag module electrical connector and remove air bag module through front of instrument panel.
  3. Connect negative battery cable. With air bag simulators installed at all deployable air bag system devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check). Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.
  1. To install, reverse removal procedure. DO NOT activate air bag system at this time. Tighten passenger-side air bag module mounting bolts to specification. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Remove air bag simulator from passenger-side air bag module harness connector and reconnect connectors.
  2. Connect negative battery cable. With air bag simulators installed at all remaining deployable air bag system devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) . Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM.

Scheme 63

Scheme 63
Scheme 63
WARNINGImproper air bag system operation is possible. Personal injury may result. RCM orientation is critical for proper air bag system operation. If RCM mounting and bracket have been damaged, RCM must be replaced even if air bags have not deployed.
CAUTIONExposure to static electricity can damage RCM internal components. RCM failure may result. Ensure RCM is protected from static electrical charges.
  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Position front seats fully forward. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM.
  2. On high series trim level models with equipped with full floor console, lift up at rear of floor console tray and remove tray. Disconnect floor console electrical connectors. On base series trim level models with equipped with full floor console, remove armrest mounting bolts and armrest. Remove storage tray. For all trim levels, remove floor console mounting screws. On base series trim level models, remove console. On high series trim level models, move floor console rearward to disengage rear mounting bracket and remove console.
  3. On models equipped with RCM cover, remove mat, mounting screws and cover. On all models, remove right-side RCM mounting bolts. Disconnect RCM harness connectors. Remove remaining RCM mounting bolt and RCM.
  1. To install, reverse removal procedure. Tighten RCM mounting bolts to specification. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Connect negative battery cable.
  2. With air bag simulators installed at all deployable air bag system devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) . Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM.

SIDE CRASH SENSORS

WARNINGImproper air bag system operation is possible. Personal injury may result. Side crash sensor orientation is critical for proper air bag system operation. If side crash sensor mounting and bracket have been damaged, side air bag crash sensor must be replaced even if air bags have not deployed. Replace or repair any other damaged air bag system components or wiring that are adjacent to side air bag crash sensor.

Note. Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM.
  2. Pull windshield side garnish molding to release retaining clips and remove molding. Pull upward on front door scuff plate to release retaining clips and remove scuff plate. Remove seat belt guide cover. Using Seat Belt Bolt Bit (501-010), remove seat belt guide bolt. Release tabs and remove seat belt guide bolt cover from seat belt guide.
  3. Position carpet aside at lower seat belt anchor. Using seat belt bolt bit, remove lower seat belt anchor bolt. Position rear seat back part way down. Peel carpet back between rear seat and quarter trim panel Through front door opening, remove quarter trim panel front screw. Fold rear seat into load floor position. Pull upward on liftgate scuff plate to release retaining clips and remove scuff plate.
  4. On models equipped with retractable cargo cover, remove cargo cover. On all models, position rear seat belt guide cover down. Using seat belt bolt bit, remove rear seat belt guide anchor bolt. Position carpet aside at rear lower seat belt anchor. Using seat belt bolt bit, remove rear lower seat belt anchor bolt. Position carpet aside to access and remove quarter trim panel screws. Remove rear quarter window latch screws and position latch out of way.
  5. Remove coat hook screw and coat hook. Remove pin-type retainers from quarter trim panel. Slide quarter trim panel forward and disengage from door jamb. Feed seat belt webbing through opening in quarter trim panel and remove trim panel. Disengage necessary wiring harness pin-type retainers from B-pillar and position wiring harness aside.
  6. Remove side crash sensor bracket bolts and position sensor and bracket aside. (Scheme 64) Disconnect side crash sensor electrical connector and remove sensor and bracket. (Scheme 65)
  1. Position side air bag crash sensor in vehicle and connect electrical connector. Install sensor bracket mounting bolts and tighten to specification. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Connect B-pillar wiring harness pin-type retainers to B-pillar. Connect negative battery cable. With air bag simulators installed at all deployable air bag system devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) .
  2. Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy.To complete installation, reverse removal procedure. Tighten rear quarter window latch retaining screws and seat belt anchor bolts to specification. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM.

Scheme 64

Scheme 64
Scheme 64

Scheme 65

Scheme 65
Scheme 65
WARNINGImproper side air bag deployment is possible. If side air bag module has deployed, seat backrest frame must be replaced. Failure to do so could cause Improper side air bag module deployment, possibly resulting in personal injury.

Note. Front seat back trim covers cannot be repaired, they must be replaced (cleaning is permissible).

  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Remove appropriate front seat. See «FRONT SEAT»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Disconnect negative battery cable (if connected during front seat removal). Wait at least one minute for back-up power supply to deplete stored energy.
  2. From under seat, disconnect seat motor electrical connector, if equipped. Remove seat track mounting bolts from seat bottom. Remove seat tracks. Disconnect power seat switch electrical connector, if equipped. Turn manual lumbar handle clockwise until it stops, releasing all tension on manual lumbar support cable. Pull and remove manual lumbar support adjustment handle. Remove lower seat trim panel retaining screws. Press tabs in on 2 retaining clips and separate lower seat trim panel from seat bottom frame. Remove lower seat trim panel.
  3. Remove push-pin holder from seat bottom frame for lumbar support cable. Separate lumbar support case assembly by sliding apart. Remove cable end ball from cable end retainer and separate. Release finger clip and slide side air bag electrical connector off bracket. Separate side air bag wiring harness pin-type retainer from seat bottom frame. Remove seat back recliner bolts.
  4. Laying seat on other side, remove mounting bolt from seat pivot. Pull lumbar support cable and side air bag wiring harness through seat bottom. Separate seat back trim cover lower "J" clip. Remove and discard hog rings from 2 swing rods. Slide swing rods out of seat back trim cover. Roll seat back trim cover, in inside out fashion, to access side air bag deployment chute. Remove and discard tie-strap holding deployment chute tail and side air bag wiring harness in place.
  5. Unzip side air bag deployment chute. Roll seat back cover and side air bag deployment chute to completely expose side air bag module, mounting bracket and side air bag shield. Remove and discard duct tape retaining side air bag shield. Separate side air bag wiring harness pin-type retainers from seat back frame. Remove side air bag stud covers. Remove side air bag module mounting nuts. (Scheme 66)
  6. Position side air bag module and shield out through seat back cushion opening. Slide side air bag module electrical connector locking clip to disengage clip. Push in on connector tabs, and disconnect connector. Remove side air bag module.

Scheme 66

Scheme 66
Scheme 66
WARNINGForeign objects between side air bag module and seat components may be projected toward occupants during air bag deployment. Personal injury may result. Ensure side air bag module, air bag mounting surfaces, deployment chute and seat back pad are free of foreign objects. Damaged or altered deployment chute or deployment chute zipper may cause side air bag to deploy improperly. Personal injury may result. If deployment chute or zipper are damaged or altered, seat back trim cover and deployment chute must be installed new, as a unit. Do not attempt to repair deployment chute. Ensure deployment chute and zipper are properly position and completely zipped. If air bag cover has separated or air bag material has been exposed, air bag may deploy improperly. Personal injury may result. If air bag cover has separated or air bag material has been exposed, install new air bag module. Do not attempt to repair air bag module.
  1. Install shield onto side air bag module. Connect side air bag module electrical connector to air bag module. Slide side air bag module connector locking clip to secure connector to side air bag module. Position side air bag module and shield into seat back cushion. Position side air bag module studs, with shield in place, through seat back mounting bracket holes (DO NOT pinch side air bag module wiring harness).
  2. Install and tighten side air bag module mounting nuts to specification, in sequence, starting with bottom mounting nut. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications). Install side air bag module stud covers. Apply NEW duct tape to side air bag shield. Position side air bag module wiring harness so it will fit loosely between side air bag shield and mounting bracket. Position side air bag shield to seat back frame and secure to frame using duct tape. Position and secure side air bag wiring harness along seat back frame with pin-type retainers.
  3. Unroll seat back trim cover to position deployment chute around side air bag module. Insert outboard side of air bag deployment chute between seat back pad and side air bag module, pulling chute around outboard side of seat back frame. (Scheme 67) Insert inboard side of air bag deployment chute between seat back pad and side air bag module from inboard side of seat back. Zip air bag deployment chute completely closed. Position zipper tail at top of deployment chute into seat back opening. Ensure air bag deployment chute completely encircles side air bag module and seat back frame, and covers entire length of air bag module.
  4. Properly position air bag deployment chute tail and side air bag wiring harness, and using NEW tie-strap, secure into place. (Scheme 68) To complete seat reassembly, reverse disassembly procedure. Tighten fasteners to specification. Install front seat in vehicle. Remove air bag simulator from side air bag harness connector and reconnect connectors.
  5. Connect negative battery cable. With air bag simulators installed at all remaining deployable air bag system devices, perform system operation check. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check). Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM.

Scheme 67

Scheme 67
Scheme 67

Scheme 68

Scheme 68
Scheme 68

Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disconnect negative battery cable. Wait at least one minute for back-up power supply to deplete stored energy. Remove side air bag delete resistor electrical connector tie-strap and disconnect connector. Push up to release finger clip and remove side air bag delete resistor. To install, reverse removal procedure. Connect negative battery cable. Check AIR BAG warning light for proper system function. See SYSTEM OPERATION CHECK .

STEERING WHEEL

CAUTIONA sudden impact could damage bearing or collapse steering column. Steering column malfunction or failure may result. When removing steering wheel, do not use a knock-off type steering wheel puller, or strike steering wheel or shaft with a hammer. Use appropriate puller when removing steering wheel.
  1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Ensure front wheels are in straight-ahead position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Remove driver-side air bag module. See «DRIVER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) .
  2. Remove and discard steering wheel mounting bolt. Mark steering wheel hub and steering shaft for installation reference. Using appropriate puller, remove steering wheel. Feed clockspring and horn wiring harness through steering wheel as wheel is lifted from steering shaft.
  3. To install, reverse removal procedure. Use NEW steering wheel bolt and tighten to specification. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Check AIR BAG warning light for proper system function. See «SYSTEM OPERATION CHECK»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

DIAGNOSTICS

WARNINGFailure to follow service precautions may result in air bag deployment and personal injury. See AIR BAG SAFETY PRECAUTIONS . After component replacement, ensure proper system operation. See SYSTEM OPERATION CHECK .

Note. Unless otherwise specified, New Generation STAR (NGS) tester (418-F052), Worldwide Diagnostic System (WDS) tester (418- F224), or equivalent scan tool will be referred to as scan tool.

SELF-DIAGNOSTICS

During vehicle operation, the Restraints Control Module (RCM) detects and stores both intermittent and hard failure codes in non-volatile memory. The RCM will also display a Light Flash Code (LFC) on the AIR BAG warning light. The DTCs can be retrieved with a scan tool using the retrieve/clear continuous codes option. If no DTCs are present, scan tool will display SYSTEM PASSED message. Once a fault code is logged in RCM memory, it will stay in memory until 254 ignition cycles have been recorded or until scan tool is used to erase the DTCs.

The on-demand self-test can be used to verify there are no electrical faults within air bag system. During this test RCM will check each electrical component in system. If fault is detected, DTC is displayed on scan tool with brief description of fault. Faults detected during self test are not stored in memory, unless same fault was detected during normal vehicle operation. Self test should be run after service to verify operation.

DIAGNOSTIC PROCEDURE

  1. Retrieve all DTCs stored in RCM memory by executing RETRIEVE/CLEAR CONTINUOUS DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) .
  2. Run on-demand self-test to determine what DTCs are currently being sensed by RCM. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) .
  3. If stored DTCs are different than current DTCs, always repair current DTCs first.
  4. If different continuous DTCs are displayed from memory than on-demand self-test, repair on-demand self-test codes first then repair continuous codes.
  5. If no DTCs are retrieved and symptoms are observed, refer to diagnostic symptoms table. See «DIAGNOSTIC SYMPTOMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table.

INSPECTION & VERIFICATION

If AIR BAG warning light is ON, visually inspect for obvious mechanical and electrical damage of following components prior to performing diagnostic tests

  1. Damaged bracket on restraints control module.
  2. Blown fuse(s).
  3. Damaged wiring harness.
  4. Loose or corroded connectors.
  5. Damaged shorting bars.
  6. Open or short circuits or loosely mounted sensors.

If damage is not visually evident, use scan tool to retrieve Diagnostic Trouble Codes (DTCs) and perform on-demand self test. See USING SCAN TOOL .

USING SCAN TOOL

  1. To retrieve continuous Diagnostic Trouble Codes (DTCs) and run self-test diagnostics, connect scan tool to Data Link Connector (DLC) following manufacturer"s instructions. DLC is located under center of instrument panel.
  2. If self test passes and no DTCs are retrieved, go to diagnostic symptoms table to continue diagnosis. See «DIAGNOSTIC SYMPTOMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If DTCs are retrieved, go to diagnostic trouble code identification table to continue diagnosis. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If restraints control module cannot be accessed by scan tool, go to «TEST S: RIGHT SIDE CRASH SENSOR COMMUNICATION FAULT (DTC U2018)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__test-s-right-side-crash-sensor) under DIAGNOSTIC TESTS.

RETRIEVING FAULT CODES

Connect scan tool to Data Link Connector (DLC), located under center of instrument panel. Turn ignition switch to RUN position. Follow manufacturer"s instructions for scan tool being used. All continuous DTCs will be displayed on scan tool screen. Record DTCs for reference. See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION table. When DTCs are cleared, they cannot be retrieved.

CLEARING FAULT CODES

Connect scan tool to Data Link Connector (DLC), located under instrument panel to right of steering column. Turn ignition switch to RUN position. Follow manufacturer"s instructions for scan tool being used. Scan tool will retrieve DTCs again after clearing. If any DTCs remain, they will be displayed. Hard DTCs will be redisplayed after clearing DTCs, since they cannot be cleared from restraints control module.

ON-DEMAND SELF-TEST

Connect scan tool to Data Link Connector (DLC), located under instrument panel to right of steering column. Turn ignition switch to RUN position. Follow manufacturer"s instructions for scan tool being used. Restraints control module will run on-demand self test and display on-demand DTCs on scan tool screen.

ACTIVE COMMANDS

This command allow verification of AIR BAG warning light and chime operation. When air bag output command is executed, AIR BAG warning light and chime are activated simultaneously for about 4 seconds. Both devices are deactivated automatically.

PID/DATA MONITOR & RECORD

  1. PID/Data Monitor and Record option allows technician using scan tool to read the state of several Parameter IDs (PIDs) to aid in diagnosing the system.
  2. Connect scan tool to Data Link Connector (DLC), located under instrument panel to right of steering column. Turn ignition switch to RUN position. Follow manufacturer"s instructions for scan tool being used. PIDs are continuously updated on scan tool display.
ConditionGo To Test
AIR BAG warning light ON continuouslyTEST A
Audible tone/DTCs retrievedTEST AD or TEST AE
No communication with RCMTEST AF

DIAGNOSTIC SYMPTOMS

Fault Code/Flash CodeGo To Test
B1231/19TEST C
B1342/24TEST B
B1869 (1)TEST AD
B1870 (1)TEST AE
B1887/15TEST F
B1888/16TEST G
B1891/ (2)TEST AC
B1892/ (2)TEST AB
B1916/15TEST H
B1921/21TEST D
B1925/16TEST I
B1932/32TEST J
B1933/33TEST K
B1934/34TEST L
B1935/35TEST M
B1992/36TEST U
B1993/36TEST T
B1994/36TEST V
B1995/36TEST W
B1996/37TEST Y
B1997/37TEST X
B1998/37TEST Z
B1999/37TEST AA
B2440/43TEST Q
B2441/42TEST P
B2444/48TEST N
B2445/49TEST O
C1414/29TEST E
U2017/44TEST R
U2018/45TEST S
(1) Tone will sound only if additional DTCs are present. (2) Flash code is not available.
(1)Tone will sound only if additional DTCs are present.
(2)Flash code is not available.

DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

TEST A: AIR BAG WARNING LIGHT ON CONTINUOUSLY-RCM DISCONNECTED, INOPERATIVE OR LOST/LOW IGNITION FEED

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Description

During normal operation, the AIR BAG warning light will be continuously illuminated for 6 seconds after the ignition switch is placed in RUN position and after 5 cycles of Light Flash Code (LFC) if a fault exists. Be sure to cycle ignition switch and look for a continuous AIR BAG warning light without LFC.

Restraints Control Module (RCM) will communicate Diagnostic Trouble Codes (DTCs) through scan tool using Data Link Connector (DLC). If scan tool displays NO COMMUNICATION when retrieving continuous codes, go to TEST AF: NO COMMUNICATION WITH RCM .

Possible Causes

An AIR BAG warning light that is continuously illuminated may be caused by disconnected RCM, damaged battery or ignition circuit, loss of ground circuit to RCM, inoperative RCM, faulty shorting bar or camming beam, or damaged scan tool.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to DLC. See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test). If continuous DTCs were retrieved, go to step 3. If on-demand DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, go to next step.
  2. Check RCM connection Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access RCM. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Ensure RCM connector C2041A is fully connected and Red locking tab is engaged. If RCM connector C2041A is fully connected and Red locking tab is engaged, go to next step. If RCM connector C2041A is not fully connected and/or Red locking tab is not engaged, reconnect connector and engage locking tab. Go to step 7. NOTE: Shorting bars may be accessed by prying out Blue cover from harness side of connector.
  3. Check RCM connector Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Inspect component side of connector, for worn or damaged camming beam and/or any foreign material. (Scheme 69) Inspect harness side of RCM connector C2041A for worn, damaged or dislodged shorting bar at terminals No. 20 and No. 21. (Scheme 69)& (Scheme 70). If camming beams and shorting bars are okay, go to next step. If camming beams and shorting bars are defective, repair or replace as necessary. Go to step 7.
  4. Check RCM ignition circuit connection Turn ignition switch to RUN position. Measure voltage between sheet metal ground near RCM and harness side of RCM connector C2041A, terminal No. 2 (Black/Light Green wire, circuit No. 364). (Scheme 70) If voltage is 9-16 volts, go to next step. If voltage is not 9-16 volts, repair open in Black/Light Green wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 7.
  5. Check ground circuit for open Turn ignition switch to OFF position. Measure resistance between sheet metal ground near RCM and harness side of RCM connector terminal No. 21 (Black/Orange wire, circuit No. 649). If resistance is less than 10 ohms, go to next step. If resistance is more than 10 ohms, repair open in Black/Orange wire. Go to step 7.
  6. Check for short to ground Access and disconnect instrument cluster harness connector C220C. See «INSTRUMENT CLUSTER»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Reconnect RCM harness connector C2041A. Measure resistance between ground and harness side of instrument cluster harness connector C220C, terminal No. 4 (Black/Yellow wire, circuit No. 608). (Scheme 71) If resistance is less than 10 k/ohms, repair short to ground in Black/Yellow wire. Go to next step. If resistance is more than 10 k/ohms, replace RCM. Go to next step.
  7. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

Scheme 69

Scheme 69
Scheme 69

Scheme 70

Scheme 70
Scheme 70

Scheme 71

Scheme 71
Scheme 71

TEST B: RCM INTERNAL FAULT (DTC B1342)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) monitors back-up power supply, accelerometer operation and memory. If RCM detects a failure in these components, it will store Diagnostic Trouble Code (DTC) B1342 in memory and flash Code 24 on AIR BAG warning light.

An RCM internal fault could be caused by improperly operating back-up power supply, internal module circuit fault or microcontroller RAM/ROM/EEPROM failure.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1342 was retrieved during on-demand self-test, fault is hard. Replace RCM and go to next step. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. If DTC B1342 was not retrieved, fault is intermittent. Replace RCM and go to next step.
  2. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST C: CRASH DATA MEMORY FULL (DTC B1231)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Clearing DTC B1231 will potentially remove all records of crash event.

When air bag deploys during a collision, Restraint Control Module (RCM) stores Diagnostic Trouble Code (DTC) B1231 in memory and flashes Code 19 on AIR BAG warning light. DTC B1231 indicates that a crash has been recorded.

Crash data memory full is caused by a crash event which deployed the air bags.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1231 was retrieved during on-demand self-test, fault is hard. Replace driver- and passenger-side air bag modules. See «DRIVER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) and «PASSENGER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to next step. If DTC B1231 was not retrieved, fault is intermittent. Go to step 3 .
  2. Check condition of RCM mounting bracket Inspect RCM mounting bracket for damage. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. If RCM mounting bracket is damaged, replace RCM and mounting bracket. Restore sheet metal to its original shape and structural integrity. Go to next step. If RCM mounting bracket is not damaged, replace RCM and go to next step.
  3. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, restore air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST D: RCM BRACKET GROUND RESISTANCE HIGH (DTC B1921)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) monitors resistance between ground connections at its housing and reference ground at RCM connector C2041A, terminal No. 21. If RCM detects resistance more than 100 ohms, it will store Diagnostic Trouble Code (DTC) B1921 in memory and flashes Code 21 on AIR BAG warning light.

High resistance between RCM housing ground and terminal ground could be caused by improper tightening of RCM mounting bolts, high resistance in RCM logic grounds or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1921 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1921 was not retrieved, fault is intermittent. Go to step 6.
  2. Check mounting of RCM Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Remove RCM. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Inspect RCM, mounting bracket and mounting surface for damage or corrosion. Ensure RCM bracket bolts are fully seated and tightened properly. If bracket and mounting surface is okay and mounting bolts were tight, go to next step. If bracket and mounting surface is not okay and/or mounting bolts were not tight, repair or replace as necessary. Go to step 7.
  3. Check RCM harness connection Ensure RCM connector C2041A is fully connected. If RCM connector C2041A is properly connected, go to next step. If RCM connector C2041A is not properly connected, reconnect connector. Go to step 7.
  4. Check vehicle chassis ground Measure resistance between a known-good ground and RCM mounting surface. If resistance more than 100 ohms, repair grounding system. Go to step 7. If resistance is less than 100 ohms, go to next step.
  5. Check ground circuit for open Ensure ignition switch is in OFF position. Disconnect RCM harness connector C2041A. Measure resistance between chassis ground and harness side of RCM connector C2041A, terminal No. 21 (Black/Orange wire, circuit No. 649). (Scheme 70) If resistance is more than 100 ohms, repair open in Black/Orange wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 7. If resistance is less than 100 ohms, replace RCM. Go to next step.
  6. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent high resistance in Black/Orange wire. Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  7. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Reactivate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST E: INCORRECT VEHICLE IDENTIFICATION CODE (DTC C1414)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) monitors voltage on RCM connector C2041A, terminals No. 10, 13 and 14 to determine if it is installed on the correct vehicle. If RCM detects an incorrect voltage on any of these terminals, it will store Diagnostic Trouble Code (DTC) C1414 in memory and flash Code 29 on AIR BAG warning light.

An incorrect module design level code could be caused by an RCM installed on wrong vehicle, an incorrectly programmed RCM or vehicle ID terminals not connected as expected.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC C1414 was retrieved during on-demand self-test, fault is hard. On Explorer Sport model, go to next step. On Explorer Sport Trac model, go to step 4. On all models, if DTC C1414 was not retrieved, fault is intermittent. Go to step 6. NOTE: For Explorer Sport, RCM connector C2041A, terminals No. 10 and 13 should be grounded.
  2. Check vehicle identification pins No. 1 & 2 Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between harness side of RCM connector C2041A, terminals No. 21 (Black/Orange wire, circuit No. 649) and terminals No. 10 and 13 (Black/White wires, circuit No. 570) individually. (Scheme 70) If resistance is more than 5 ohms in either circuit, repair open in appropriate wire. Go to step 7. If resistance is less than 5 ohms In both circuits, go to next step. NOTE: For Explorer Sport, RCM connector C2041A, terminal No. 14 should be open circuited.
  3. Check vehicle identification pin No. 3 Inspect harness side of RCM connector C2041A, terminal No. 14. If any wire is connected to terminal No. 14, repair wire connection to connector according to wiring diagram. Go to step 7. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). If no wire is connected to terminal No. 14, replace RCM. Go to step 7. NOTE: For Explorer Sport Trac, RCM connector C2041A, terminals No. 10 and 14 should be grounded.
  4. Check vehicle identification pins No. 1 & 3 Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between harness side of RCM connector C2041A, terminals No. 21 (Black/Orange wire, circuit No. 649) and terminals No. 10 and 14 (Black/White wires, circuit No. 570) individually. (Scheme 70) If resistance is more than 5 ohms In either circuit, repair open in appropriate wire. Go to step 7. If resistance is less than 5 ohms in both circuits, go to next step. NOTE: For Explorer Sport Trac, RCM connector C2041A, terminal No. 13 should be open circuited.
  5. Check vehicle identification pin No. 2 Inspect harness side of RCM connector C2041A, terminal No. 13. If any wire is connected to terminal No. 13, repair wire connection to connector according to wiring diagram and. Go to step 7. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). If no wire is connected to terminal No. 13, replace RCM. Go to step 7.
  6. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent open in Black/Light Green wire (circuit No. 364). See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  7. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reactivate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST F: DRIVER-SIDE AIR BAG CIRCUIT SHORT TO GROUND (DTC B1887)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) checks driver-side air bag module circuits for short to ground by monitoring voltage at RCM harness connector C2041A, terminals No. 3 (Gray/Orange wire) and No. 4 (Gray/White wire). If RCM detects short to ground on either terminal, it will store Diagnostic Trouble Code (DTC) B1887 in memory and flash Code 15 on AIR BAG warning light.

A driver-side air bag ignitor circuit shorted to ground could be caused by a short to ground in Gray/Orange wire (circuit No. 614), short to ground in Gray/White wire (circuit No. 615), short to ground in clockspring, short to ground in driver-side air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1887 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1887 was not retrieved, fault is intermittent. Go to step 5.
  2. Check driver-side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1887 is retrieved, go to next step. If DTC B1887 is not retrieved, replace driver-side air bag module. See «DRIVER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 6. NOTE: Do not remove or separate shorting bars from RCM harness connector.
  3. Check driver-side air bag circuit Turn ignition switch to OFF position. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between harness side of RCM connector C2041A, terminals No. 3 (Gray/Orange wire) and No. 4 (Black/Orange wire, circuit No. 649). (Scheme 70) If resistance is less than 10 k/ohms, go to next step. If resistance is more than 10 k/ohms, replace RCM. Go to step 6.
  4. Check driver-side air bag wiring & clockspring Disconnect driver-side air bag module connector. Disconnect lower clockspring connector, located on bottom of steering column. Inspect all crimps, terminals, fuses, wires and connectors feeding RCM harness connector C2041A, terminals No. 3 (Gray/Orange wire) and No. 4 (Gray/White wire), clockspring and clockspring connectors. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 6. If no damage is found, go to step 6.
  5. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent short to ground in Gray/Orange wire, Gray/White wire and clockspring assembly. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST G: PASSENGER-SIDE AIR BAG CIRCUIT SHORT TO GROUND (DTC B1888)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) checks passenger-side air bag module circuits for short to ground by monitoring voltage at RCM harness connector C2041A, terminals No. 6 (Light Blue/Orange wire) and No. 7 (Pink/Black wire). If RCM detects short to ground on either terminal, it will store Diagnostic Trouble Code (DTC) B1888 in memory and flash Code 16 on AIR BAG warning light.

A passenger-side air bag circuit shorted to ground could be caused by a short to ground in Light Blue/Orange wire (circuit No. 607), short to ground in Pink/Black wire (circuit No. 616), short to ground in passenger-side air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1888 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1888 was not retrieved, fault is intermittent. Go to step 5.
  2. Check passenger-side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1888 is retrieved, go to next step. If DTC B1888 is not retrieved, replace passenger-side air bag module. See «PASSENGER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 6. NOTE: Do not remove or separate shorting bars from RCM harness connector.
  3. Check passenger-side air bag circuit Turn ignition switch to OFF position. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between harness side of RCM connector C2041A, terminals No. 6 (Light Blue/Orange wire,) and No. 21 (Black/Orange wire, circuit No. 649). (Scheme 70) If resistance is less than 10 k/ohms, go to next step. If resistance is more than 10 k/ohms, replace RCM. Go to step 6.
  4. Check passenger-side air bag wiring Disconnect passenger-side air bag simulator from harness connector. Inspect all crimps, terminals, fuses, wires and connectors feeding RCM harness connector C2041A, terminals No. 6 (Light Blue/Orange wire) and No. 7 (Pink/Black wire). See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 6. If no damage is found, go to step 6.
  5. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent short to ground in Light Blue/Orange and Pink/Black wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST H: DRIVER-SIDE AIR BAG CIRCUIT SHORT TO BATTERY OR IGNITION (DTC B1916)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) checks driver-side air bag module circuits for short to battery or ignition voltage by monitoring voltage at RCM harness connector C2041A, terminals No. 3 (Gray/Orange wire) and No. 4 (Gray/White wire). If RCM detects short to battery or ignition voltage on either terminal, it will store Diagnostic Trouble Code (DTC) B1916 in memory and flash Code 15 on AIR BAG warning light.

A driver-side air bag circuit shorted to battery or ignition voltage could be caused by a short to battery or ignition voltage in Gray/Orange wire (circuit No. 614), short to battery or ignition voltage in Gray/White wire (circuit No. 615), short to battery or ignition voltage in clockspring, short to battery or ignition voltage in driver-side air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1916 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1916 was not retrieved, fault is intermittent. Go to step 5.
  2. Check driver-side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1916 is retrieved, go to next step. If DTC B1916 is not retrieved, replace driver-side air bag module. See «DRIVER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 6. NOTE: Do not remove or separate shorting bars from RCM harness connector.
  3. Check driver-side air bag circuit Turn ignition switch to OFF position. Disconnect negative battery cable. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Turn ignition switch to RUN position. Measure resistance between harness side of RCM connector C2041A, terminals No. 3 (Gray/Orange wire) and No. 2 (Black/Light Green wire, circuit No. 364). (Scheme 70) If resistance is less than 10 k/ohms, go to next step. If resistance is more than 10 k/ohms, replace RCM. Go to step 6.
  4. Check driver-side air bag wiring & clockspring Disconnect driver-side air bag simulator from harness connector. Disconnect lower clockspring connector located on bottom of steering column. Inspect all crimps, terminals, fuses, wires and connectors feeding RCM harness connector C2041A, terminals No. 3 (Gray/Orange wire) and No. 4 (Gray/White wire), clockspring and clockspring connectors. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 6. If no damage is found, go to step 6.
  5. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent short to battery or ignition voltage in Gray/Orange wire, Gray/White wire and clockspring assembly. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST I: PASSENGER-SIDE AIR BAG CIRCUIT SHORT TO BATTERY OR IGNITION (DTC B1925)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) checks passenger-side air bag module circuits for short to battery or ignition voltage by monitoring voltage at RCM harness connector C2041A, terminals No. 6 (Light Blue/Orange wire) and No. 7 (Pink/Black wire). If RCM detects short to battery or ignition voltage on either terminal, it will store Diagnostic Trouble Code (DTC) B1925 in memory and flash Code 16 on AIR BAG warning light.

A passenger-side air bag ignitor circuit shorted to battery or ignition voltage could be caused by a short to battery or ignition voltage in Light Blue/Orange wire (circuit No. 607), short to battery or ignition voltage in Pink/Black wire (circuit No. 616), short to battery or ignition voltage in air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1925 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1925 was not retrieved, fault is intermittent. Go to step 5.
  2. Check passenger-side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1925 is retrieved, go to next step. If DTC B1925 is not retrieved, replace passenger-side air bag module. See «PASSENGER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 6. NOTE: Do not remove or separate shorting bars from RCM harness connector.
  3. Check passenger-side air bag circuit Turn ignition switch to OFF position. Disconnect negative battery cable. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Turn ignition switch to RUN position. Measure resistance between harness side of RCM connector C2041A, terminals No. 6 (Light Blue/Orange wire) and No. 2 (Black/Light Green wire, circuit No. 364). (Scheme 70) If resistance is less than 10 k/ohms, go to next step. If resistance is more than 10 k/ohms, replace RCM. Go to step 6.
  4. Check passenger-side air bag wiring Disconnect passenger-side air bag simulator from harness connector. Inspect all crimps, terminals, fuses, wires and connectors feeding RCM harness connector C2041A, terminals No. 6 (Light Blue/Orange wire) and No. 7 (Pink/Black wire, circuit No. 616). See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 6. If no damage is found, go to step 6.
  5. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent short to battery or ignition voltage in Light Blue/Orange and Pink/Black wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST J: DRIVER-SIDE AIR BAG RESISTANCE HIGH (DTC B1932)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) monitors resistance of driver-side air bag ignitor by measuring resistance between RCM connector C2041A, terminals No. 3 (Gray/Orange wire, circuit No. 614) and No. 4 (Gray/White wire, circuit No. 615). If RCM detects high resistance between these terminals, it will store Diagnostic Trouble Code (DTC) B1932 in memory and flash Code 32 on AIR BAG warning light.

Driver-side air bag high resistance could be caused by poor connection or corrosion in driver-side air bag module circuits or clockspring, open circuit or high resistance in clockspring windings, open circuit or high resistance in wiring harness, open or high resistance in driver-side air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1932 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1932 was not retrieved, fault is intermittent. Go to step 5 .
  2. Check driver-side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1932 is retrieved, go to next step. If DTC B1932 is not retrieved, replace driver-side air bag module. See «DRIVER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 6 . NOTE: By disconnecting RCM harness connector, circuit No. 614 (Gray/Orange wire) and circuit No. 615 (Gray/White wire) are shorted together by shorting bar. Do not remove shorting bar.
  3. Check driver-side air bag circuit Turn ignition switch to OFF position. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Disconnect driver-side air bag simulator. Zero ohmmeter. Measure resistance between Gray/Orange and Gray/White wires on harness side of upper clockspring connector. If resistance is more than 0.5 ohm, go to next step. If resistance is less than 0.5 ohm, replace RCM. Go to step 6 . NOTE: By disconnecting lower clockspring connector, connector terminals are shorted together by shorting bar. Do not remove shorting bar.
  4. Check clockspring Turn ignition switch to OFF position. Disconnect lower clockspring connector, located at bottom of steering column. Zero ohmmeter. Measure resistance between Gray/Orange and Gray/White wires on vehicle harness side of lower clockspring connector. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . If resistance is more than 0.5 ohm replace clockspring assembly. See «CLOCKSPRING»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 6 . If resistance is less than 0.5 ohm repair high resistance in appropriate wire. Go to step 6 .
  5. Check for intermittent fault Refer to continuous DTCs recorded in step 1 . If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent high resistance in Gray/Orange wire, Gray/White wire and clockspring. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST K: PASSENGER-SIDE AIR BAG RESISTANCE HIGH (DTC B1933)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) monitors resistance of passenger-side air bag ignitor by measuring resistance between RCM connector C2041A, terminals No. 6 (Light Blue/Orange wire, circuit No. 607) and No. 7 (Pink/Black wire, circuit No. 616). If RCM detects high resistance between these terminals, it will store Diagnostic Trouble Code (DTC) B1933 in memory and flash Code 33 on AIR BAG warning light.

Passenger-side air bag high resistance could be caused by poor connection or corrosion in passenger-side air bag module circuits, open circuit or high resistance in wiring harness, open or high resistance in passenger-side air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1933 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1933 was not retrieved, fault is intermittent. Go to step 4 .
  2. Check passenger-side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1933 is retrieved, go to next step. If DTC B1933 is not retrieved, replace passenger-side air bag module. See «PASSENGER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 5 . NOTE: By disconnecting RCM harness connector, circuit No. 607 (Light Blue/Orange wire) and circuit No. 616 (Pink/Black wire) are shorted together by shorting bar. Do not remove shorting bar.
  3. Check passenger-side air bag circuit Turn ignition switch to OFF position. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Disconnect passenger-side air bag simulator from harness connector. Zero ohmmeter. Measure resistance between Light Blue/Orange and Pink/Black wires on harness side of passenger-side air bag module connector. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . If resistance is more than 0.5 ohm, repair high resistance in appropriate wire. Go to step 5 . If resistance is less than 0.5 ohm, replace RCM. Go to step 5 .
  4. Check for intermittent fault Refer to continuous DTCs recorded in step 1 . If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent high resistance in Light Blue/Orange and Pink/Black wires. Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  5. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST L: DRIVER-SIDE AIR BAG LOW RESISTANCE (DTC B1934)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) monitors resistance of driver-side air bag ignitor by measuring resistance between RCM connector C2041A, terminals No. 3 (Gray/Orange wire, circuit No. 614) and No. 4 (Gray/White wire, circuit No. 615). If RCM detects low resistance between these terminals, it will store Diagnostic Trouble Code (DTC) B1934 in memory and flash Code 34 on AIR BAG warning light.

Driver-side air bag low resistance could be caused by short circuit in clockspring windings, short circuit in wiring harness, low resistance in driver-side air bag module, closed shorting bar, damage camming beam or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1934 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1934 was not retrieved, fault is intermittent. Go to step 5 .
  2. Check driver-side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1934 is retrieved, go to next step. If DTC B1934 is not retrieved, replace driver-side air bag module. See «DRIVER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 6 .
  3. Check driver-side air bag circuit Turn ignition switch to OFF position. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Disconnect driver-side air bag simulator from harness connector. Measure resistance between Gray/Orange and Gray/White wires on harness side of upper clockspring connector. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . If resistance is less than 10 k/ohms, go to next step. If resistance is more than 10 k/ohms, replace RCM. Go to step 6 .
  4. Check clockspring Disconnect lower clockspring connector, located at bottom of steering column. Measure resistance between Gray/Orange and Gray/White wires on vehicle harness side of lower clockspring connector. If resistance is less 10 k/ohms, repair short between Gray/Orange and Gray/White wires. Go to step 6 . If resistance is more than 10 k/ohms, replace clockspring assembly. See «CLOCKSPRING»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 6 .
  5. Check for intermittent fault Refer to continuous DTCs recorded in step 1 . If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent low resistance in Gray/Orange wire, Gray/White wire and clockspring. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST M: PASSENGER-SIDE AIR BAG RESISTANCE LOW (DTC B1935)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) monitors resistance of passenger-side air bag ignitor by measuring resistance between RCM connector C2041A, terminals No. 6 (Light Blue/Orange wire, circuit No. 607) and No. 7 (Pink/Black wire, circuit No. 616). If RCM detects low resistance between these terminals, it will store Diagnostic Trouble Code (DTC) B1935 in memory and flash Code 35 on AIR BAG warning light.

Passenger-side air bag low resistance could be caused by short in wiring harness, low resistance in passenger-side air bag module, closed shorting bar, damaged camming beam or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1935 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1935 was not retrieved, fault is intermittent. Go to step 4 .
  2. Check passenger-side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1935 is retrieved, go to next step. If DTC B1935 is not retrieved, replace passenger-side air bag module. See «PASSENGER-SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Go to step 5 .
  3. Check passenger-side air bag circuit Turn ignition switch to OFF position. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Disconnect passenger-side air bag simulator from harness connector. Zero ohmmeter. Measure resistance between Light Blue/Orange and Pink/Black wires on harness side of passenger-side air bag module harness connector. If resistance is less than 10 k/ohms, repair short between Light Blue/Orange and Pink/Black wires. Go to step 5 . If resistance is more than 10 k/ohms, replace RCM. Go to step 5 .
  4. Check for intermittent fault Refer to continuous DTCs recorded in step 1 . If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent low resistance in Light Blue/Orange and Pink/Black wires. Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  5. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST N: LEFT SIDE CRASH SENSOR INTERNAL FAULT (DTC B2444)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors 2-wire current loop to left side crash sensor for signal that is out of expected range. If RCM detects an out-of-range signal, indicating an internal fault, it will store Diagnostic Trouble Code (DTC) B2444 in memory and flash Code 48 on AIR BAG warning light.

A left side crash sensor internal fault could be caused by damaged left side crash sensor.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B2444 was retrieved during on-demand self-test, replace left side crash sensor. See «SIDE CRASH SENSORS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__side-crash-sensors) under REMOVAL & INSTALLATION. Go to next step. If DTC B2444 was not retrieved, replace left side crash sensor. Go to next step.
  2. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST O: RIGHT SIDE CRASH SENSOR INTERNAL FAULT (DTC B2445)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors 2-wire current loop to right side crash sensor for signal that is out of expected range. If RCM detects an out-of-range signal, indicating an internal fault, it will store Diagnostic Trouble Code (DTC) B2445 in memory and flash Code 49 on AIR BAG warning light.

A right side crash sensor internal fault could be caused by damaged right side crash sensor.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B2445 was retrieved during on-demand self-test, replace right side crash sensor. See «SIDE CRASH SENSORS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__side-crash-sensors) under REMOVAL & INSTALLATION. Go to next step. If DTC B2445 was not retrieved, replace right side crash sensor. Go to next step.
  2. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST P: LEFT SIDE CRASH SENSOR MOUNTING FAILURE (DTC B2441)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors 2-wire current loop to left side crash sensor for signal that is out of expected range. If RCM detects an out-of-range signal, indicating a sensor mounting failure, it will store Diagnostic Trouble Code (DTC) B2441 in memory and flash Code 42 on AIR BAG warning light.

A left side crash sensor mounting failure could be caused by damaged wiring, damaged left side crash sensor or corrosion or dirt on sensor mounting surface.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B2441 was retrieved during on-demand self-test, go to next step. If DTC B2441 was not retrieved, fault is intermittent. Go to step 5 .
  2. Check side crash sensor mounting Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Remove left side crash sensor. See «SIDE CRASH SENSORS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__side-crash-sensors) under REMOVAL & INSTALLATION. Visually inspect crash sensor mounting bracket and mounting surface for damage, corrosion or dirt. Ensure mounting bolts are fully seated and tightened correctly. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications) . If significant amount of corrosion or dirt is found, sensor mounting bracket attached to mounting surface incorrectly, or sensor retain bolts are not fully seated, repair or replace as necessary. Ensure sensor mounting bracket and mounting surface is free of damage, corrosion or dirt and mounting bolts are fully seated and correctly tightened. Reattach sensor and mounting bracket to mounting surface. Go to step 6 . If sensor, mounting surface and mounting bolts are okay, go to next step.
  3. Check side crash sensor harness connection Inspect side crash sensor harness connector. If side crash sensor harness connector is properly connected to sensor, go to next step. If side crash sensor harness connector is not properly connected to sensor, reconnect connector. Go to step 6 .
  4. Check chassis ground Measure resistance between a known-good chassis ground and side crash sensor mounting surface. If resistance is more than 100 ohms, repair grounding system. Go to step 6 . If resistance is less than 100 ohms, replace left side crash sensor. Go to step 6 .
  5. Check for intermittent fault Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Refer to continuous DTCs recorded in step 1 . If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent mounting failure. Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST Q: RIGHT SIDE CRASH SENSOR MOUNTING FAILURE (DTC B2440)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors 2-wire current loop to right side crash sensor for signal that is out of expected range. If RCM detects an out-of-range signal, indicating a sensor mounting failure, it will store Diagnostic Trouble Code (DTC) B2440 in memory and flash Code 43 on AIR BAG warning light.

A right side crash sensor mounting failure could be caused by damaged wiring, damaged right side crash sensor or corrosion or dirt on sensor mounting surface.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B2440 was retrieved during on-demand self-test, go to next step. If DTC B2440 was not retrieved, fault is intermittent. Go to step 5 .
  2. Check side crash sensor mounting Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Remove right side crash sensor. See «SIDE CRASH SENSORS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__side-crash-sensors) under REMOVAL & INSTALLATION. Visually inspect crash sensor mounting bracket and mounting surface for damage, corrosion or dirt. Ensure mounting bolts are fully seated and tightened correctly. See «TORQUE SPECIFICATIONS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__torque-specifications) . If significant amount of corrosion or dirt is found, sensor mounting bracket attached to mounting surface incorrectly, or sensor mounting bolts are not fully seated, repair or replace as necessary. Ensure sensor mounting bracket and mounting surface is free of damage, corrosion or dirt and mounting bolts are fully seated and correctly tightened. Reattach sensor and mounting bracket to mounting surface. Go to step 6 . If sensor, mounting surface and mounting bolts are okay, go to next step.
  3. Check side crash sensor harness connection Inspect side crash sensor harness connector. If side crash sensor harness connector is properly connected to sensor, go to next step. If side crash sensor harness connector is not properly connected to sensor, reconnect connector. Go to step 6 .
  4. Check chassis ground Measure resistance between a known-good chassis ground and side crash sensor mounting surface. If resistance is more than 100 ohms, repair grounding system. Go to step 6 . If resistance is less than 100 ohms, replace right side crash sensor. Go to step 6 .
  5. Check for intermittent fault Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Refer to continuous DTCs recorded in step 1 . If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent mounting failure. Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST R: LEFT SIDE CRASH SENSOR COMMUNICATION FAULT (DTC U2017)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors 2-wire current loop to right side crash sensor for signal that is out of expected range. If RCM detects an out-of-range signal, indicating a sensor communication fault, it will store Diagnostic Trouble Code (DTC) U2017 in memory and flash Code 44 on AIR BAG warning light.

A left side crash sensor communication fault could be caused by damaged White/Light Green wire (circuit No. 1261), damaged Brown/Light Green wire (circuit No. 1262) or damaged left side crash sensor.

  1. Check for continuous or on-demand DTCs Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Clear continuous DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC U2017 was retrieved during on-demand self-test, go to next step. If DTC U2017 was not retrieved, fault is intermittent. Go to step 9.
  2. Check side crash sensor harness connector Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access left side crash sensor. See «SIDE CRASH SENSORS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__side-crash-sensors) under REMOVAL & INSTALLATION. Ensure side crash sensor harness connector is properly connected to sensor. If side crash sensor is properly connected, go to next step. If side crash sensor is not properly connected, reconnect connector. Go to step 10.
  3. Check circuit for open Turn ignition switch to OFF position. Access RCM and disconnect harness connector C2041B. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Disconnect left side crash sensor harness connector. Measure resistance of White/Light Green wire between harness side of RCM connector C2041B, terminal No. 8 and harness side of left side crash sensor connector. (Scheme 70) If resistance is more than one ohm, repair open in White/Light Green wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 10. If resistance is less than one ohm, go to next step.
  4. Check circuit for open Measure resistance of Brown/Light Green wire between harness side of RCM connector C2041B, terminal No. 9 and harness side of left side crash sensor connector. If resistance is more than one ohm, repair open in Brown/Light Green wire. Go to step 10. If resistance is less than one ohm, go to next step.
  5. Check circuit for short to ground Disconnect RCM connector C2041A. Measure resistance between harness side of RCM connector C2041B, terminal No. 8 (White/Light Green wire) and harness side of RCM connector C2041A, terminal No. 21 (Black/Orange wire, circuit No. 649). If resistance is less than 1000 ohms, repair short to ground in White/Light Green wire. Go to step 10. If resistance is more than 1000 ohms, go to next step.
  6. Check circuit for short to ground Measure resistance between harness side of RCM connector C2041B, terminal No. 9 (Brown/Light Green wire) and harness side of RCM connector C2041A, terminal No. 21 (Black/Orange wire). If resistance is less than 1000 ohms, repair short to ground in Brown/Light Green wire. Go to step 10. If resistance is more than 1000 ohms, go to next step.
  7. Check circuit for short to battery or ignition Turn ignition switch to OFF position. Disconnect negative battery cable. Turn ignition switch to RUN position. Measure resistance between harness side of RCM connector C2041B, terminal No. 8 (White/Light Green wire) and harness side of RCM connector C2041A, terminal No. 2 (Black/Light Green wire, circuit No. 364). (Scheme 70) If resistance is less than 10 k/ohms, repair short to battery or ignition in White/Light Green wire. Go to step 10. If resistance is more than 10 k/ohms, go to next step.
  8. Check circuit for short to battery or ignition Measure resistance between harness side of RCM connector C2041B, terminal No. 9 (Brown/Light Green wire) and harness side of RCM connector C2041A, terminal No. 2 (Black/Light Green wire). (Scheme 70) If resistance is less than 10 k/ohms, repair short to battery or ignition in Brown/Light Green wire. Go to step 10. If resistance is more than 10 k/ohms, replace side crash sensor. Go to step 10.
  9. Check for intermittent fault Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent communication fault. Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  10. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST S: RIGHT SIDE CRASH SENSOR COMMUNICATION FAULT (DTC U2018)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors 2-wire current loop to left side crash sensor for signal that is out of expected range. If RCM detects an out-of-range signal, indicating a sensor communication fault, it will store Diagnostic Trouble Code (DTC) U2018 in memory and flash Code 45 on AIR BAG warning light.

A right side crash sensor communication fault could be caused by damaged White wire (circuit No. 1263), Brown wire (circuit No. 1264) or damaged right side crash sensor.

  1. Check for continuous or on-demand DTCs Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Clear continuous DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC U2018 was retrieved during on-demand self-test, go to next step. If DTC U2087 was not retrieved, fault is intermittent. Go to step 9.
  2. Check side crash sensor harness connector Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access right side crash sensor. See «SIDE CRASH SENSORS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__side-crash-sensors) under REMOVAL & INSTALLATION. Ensure side crash sensor harness connector is properly connected to sensor. If side crash sensor is properly connected, go to next step. If side crash sensor is not properly connected, reconnect connector. Go to step 10.
  3. Check circuit for open Turn ignition switch to OFF position. Access RCM and disconnect harness connector C2041B. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Disconnect right side crash sensor harness connector. Measure resistance of White wire between harness side of RCM connector C2041B, terminal No. 10 and harness side of right side crash sensor connector. (Scheme 70) If resistance is more than one ohm, repair open in White wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 10. If resistance is less than one ohm, go to next step.
  4. Check circuit for open Measure resistance of Brown wire between harness side of RCM connector C2041B, terminal No. 11 and harness side of right side crash sensor connector. If resistance is more than one ohm, repair open in Brown wire. Go to step 10. If resistance is less than one ohm, go to next step.
  5. Check circuit for short to ground Disconnect RCM harness connector C2041A. Measure resistance between harness side of RCM connector C2041B, terminal No. 10 (White wire) and harness side of RCM connector C2041A, terminal No. 21 (Black/Orange wire, circuit No. 649). If resistance is less than 1000 ohms, repair short to ground in White wire. Go to step 10. If resistance is more than 1000 ohms, go to next step.
  6. Check circuit for short to ground Measure resistance between harness side of RCM connector C2041B, terminal No. 11 (Brown wire) and harness side of RCM connector C2041A, terminal No. 21 (Black/Orange wire). If resistance is less than 1000 ohms, repair short to ground in Brown wire. Go to step 10. If resistance is more than 1000 ohms, go to next step.
  7. Check circuit for short to battery or ignition Turn ignition switch to OFF position. Disconnect negative battery cable. Turn ignition switch to RUN position. Measure resistance between harness side of RCM connector C2041B, terminal No. 10 (White wire) and harness side of RCM connector C2041A, terminal No. 2 (Black/Light Green wire, circuit No. 364). If resistance is less than 10 k/ohms, repair short to battery or ignition in White wire. Go to step 10. If resistance is more than 10 k/ohms, go to next step.
  8. Check circuit for short to battery or ignition Measure resistance between harness side of RCM connector C2041B, terminal No. 11 (Brown wire) and harness side of RCM connector C2041A, terminal No. 2 (Black/Light Green wire). If resistance is less than 10 k/ohms, repair short to battery or ignition in Brown wire. Go to step 10. If resistance is more than 10 k/ohms, replace side crash sensor. Go to step 10.
  9. Check for intermittent fault Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent communication fault. Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  10. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST T: LEFT SIDE AIR BAG CIRCUIT SHORT TO GROUND (DTC B1993)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) checks left side air bag module circuits for short to ground by monitoring voltage at RCM harness connector C2041B, terminals No. 2 (White/Light Blue wire) and No. 3 (Brown/Light Blue wire). If RCM detects resistance less than 1000 ohms at either terminal, it will store Diagnostic Trouble Code (DTC) B1993 in memory and flash Code 36 on AIR BAG warning light.

A left side air bag circuit short to ground could be caused by a short to ground in White/Light Blue wire (circuit No. 1257), short to ground in Brown/Light Blue wire (circuit No. 1258), short to ground in left side air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1993 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1993 was not retrieved, fault is intermittent. Go to step 7.
  2. Check left side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1993 is retrieved, go to step 5. If DTC B1993 is not retrieved, go to next step.
  3. Check left side air bag in-seat harness circuit for short to ground Turn ignition switch to OFF position. Access and disconnect left side air bag module harness connector from air bag module. See «SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance of White/Light Blue wire between ground and harness side of left side air bag module harness connector. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). If resistance is less than 1000 ohms, repair short to ground in White/Light Blue wire. Go to step 8. If resistance is more than 1000 ohms, go to next step.
  4. Check left side air bag in-seat harness circuit for short to ground Measure resistance of Brown/Light Blue wire between ground and harness side of left side air bag module harness connector. If resistance is less than 1000 ohms, repair short to ground in Brown/Light Blue wire. Go to step 8. If resistance is more than 1000 ohms, replace left side air bag module. Go to step 8. NOTE: Do not separate or remove shorting bars from RCM connector C2041B.
  5. Check left side air bag circuit to seat harness Turn ignition switch to OFF position. Access RCM and disconnect harness connectors C2041B and C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between harness side of RCM connector C2041B, terminal No. 2 (White/Light Blue wire) and harness side of RCM connector C2041A, terminal No. 21 (Black/Orange wire, circuit No. 649). (Scheme 70) If resistance is less than 10 k/ohms, repair short to ground in White/Light Blue wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). If resistance is more than 10 k/ohms, go to next step.
  6. Check left side air bag circuit to seat harness Disconnect left side air bag module simulator from harness connector. Inspect all crimps, terminals, wires and connectors in circuit No. 1257 (White/Light Blue wire) between left side air bag module floor harness connector and RCM connector C2041B, terminal No. 2. Inspect all crimps, terminals, wires and connectors in circuit No. 1258 (Brown/Light Blue wire) between left side air bag module floor harness connector and RCM connector C2041B, terminal No. 3. Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 8. If no damage is found, replace RCM. Go to step 8.
  7. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent short to ground in White/Light Blue and Brown/Light Blue wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  8. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST U: LEFT SIDE AIR BAG CIRCUIT SHORT TO BATTERY OR IGNITION (DTC B1992)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) checks left side air bag module circuits for short to battery or ignition by monitoring voltage at RCM harness connector C2041B, terminals No. 2 (White/Light Blue wire) and No. 3 (Brown/Light Blue wire). If RCM detects battery or ignition voltage, it will store Diagnostic Trouble Code (DTC) B1992 in memory and flash Code 36 on AIR BAG warning light.

A left side air bag circuit short to battery or ignition voltage could be caused by short to battery or ignition voltage in White/Light Blue wire (circuit No. 1257), short to battery or ignition voltage in Brown/Light Blue wire (circuit No. 1258), short to battery or ignition voltage in left side air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1992 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1992 was not retrieved, fault is intermittent. Go to step 7 .
  2. Check left side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1992 is retrieved, go to step 5 . If DTC B1992 is not retrieved, go to next step.
  3. Check left side air bag in-seat harness circuit for short to voltage Turn ignition switch to OFF position. Access and disconnect left side air bag harness connector from air bag module. See «SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Turn ignition to RUN position. Measure voltage in White/Light Blue wire between ground and harness side of left side air bag module connector. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . If voltage is more than 10 volts, repair short to voltage in White/Light Blue wire. Go to step 8 . If voltage is less than 10 volts, go to next step.
  4. Check left side air bag in-seat harness circuit for short to voltage Measure voltage in Brown/Light Blue wire between ground and harness side of left side air bag module floor connector. If voltage is more than 10 volts, repair short to voltage in Brown/Light Blue wire. Go to step 8 . If voltage is less than 10 volts, replace left side air bag module. Go to step 8 . NOTE: Do not separate or remove shorting bars from connector C2041B.
  5. Check left side air bag circuit to seat harness Turn ignition switch to OFF position. Disconnect negative battery cable. Access RCM and disconnect harness connectors C2041B and C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Turn ignition switch to RUN position. Measure resistance between harness side of RCM connector C2041B, terminal No. 2 (White/Light Blue wire) and harness side of RCM connector C2041A, terminal No. 2 (Black/Light Green wire, circuit No. 364). If resistance is less than 10 k/ohms, repair short to voltage in White/Light Blue wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . Go to step 8 . If resistance is more than 10 k/ohms, go to next step.
  6. Check left side air bag circuit to seat harness Disconnect left side air bag module simulator from harness connector. Inspect all crimps, terminals, wires and connectors in circuit No. 1257 (White/Light Blue wire) between left side air bag module floor harness connector and RCM connector C2041B, terminal No. 2. Inspect all crimps, terminals, wires and connectors in circuit No. 1258 (Brown/Light Blue wire) between left side air bag module floor harness connector and RCM connector C2041B, terminal No. 3. Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 8 . If no damage is found, replace RCM. Go to step 8 .
  7. Check for intermittent fault Refer to continuous DTCs recorded in step 1 . If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent short to voltage in White/Light Blue and Brown/Light Blue wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  8. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST V: LEFT SIDE AIR BAG CIRCUIT RESISTANCE HIGH (DTC B1994)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors resistance of left side air bag module circuit loop and air bag igniter at RCM connector C2041B terminals No. 2 (White/Light Blue wire) and No. 3 (Brown/Light Blue wire). If RCM detects resistance more than 3.6 ohms, it will store Diagnostic Trouble Code (DTC) B1994 in memory and flash Code 36 on AIR BAG warning light.

Left-side air bag circuit high resistance could be caused by damaged White/Light Blue wire (circuit No. 1257), damaged Brown/Light Blue wire (circuit No. 1258), damaged left side air bag module, RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1994 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1994 was not retrieved, fault is intermittent. Go to step 7.
  2. Check left side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1994 is retrieved, go to step 5. If DTC B1994 is not retrieved, go to next step.
  3. Check left side air bag in-seat harness circuit for high resistance Turn ignition switch to OFF position. Access and disconnect left side air bag harness connector from air bag module. See «SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance in White/Light Blue wire between harness side of left side air bag module in-seat harness connector and seat side of left side air bag module floor harness connector. If resistance is more than one ohm, repair open in White/Light Blue wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 8. If resistance is less than one ohm, go to next step.
  4. Check left side air bag in-seat harness circuit for high resistance Measure resistance in Brown/Light Blue wire between harness side of left side air bag module in-seat harness connector and seat harness side of left side air bag module floor harness connector. If resistance is more than one ohm, repair open in Brown/Light Blue wire. Go to step 8. If resistance is less than one ohm, replace left side air bag module. Go to step 8. NOTE: By disconnecting RCM connector C2041B, circuit No. 1257 (White/Blue wire) and No. 1258 (Brown/Light Blue wire) are shorted together with shorting bar. Do not remove shorting bar.
  5. Check left side air bag circuit to seat harness for high resistance Turn ignition switch to OFF position. Access RCM and disconnect harness connector C2041B. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Remove left side air bag module simulator from harness connector. Zero ohmmeter. Measure resistance between White/Light Blue and Brown/Light Blue wires on vehicle harness side of left side air bag module floor harness connector. If resistance is more than one ohm, repair open in appropriate wire. Go to step 8. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). If resistance is less than one ohm, replace RCM. Go to next step.
  6. Check left side air bag circuits to seat harness Inspect all crimps, terminals, wires and connectors in circuit No. 1257 (White/Light Blue wire) between left side air bag module floor harness connector and RCM connector C2041B, terminal No. 2. (Scheme 70) Inspect all crimps, terminals, wires and connectors in circuit No. 1258 (Brown/Light Blue wire) between left side air bag module floor harness connector and RCM connector C2041B, terminal No. 3. Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 8. If no damage is found, replace RCM. Go to step 8.
  7. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent high resistance in White/Light Blue and Brown/Light Blue wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  8. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST W: LEFT SIDE AIR BAG CIRCUIT RESISTANCE LOW (DTC B1995)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors resistance of left side air bag module circuit loop and air bag igniter at RCM connector C2041B terminals No. 2 (White/Light Blue wire) and No. 3 (Brown/Light Blue wire). If RCM detects resistance less than 1.4 ohms, it will store Diagnostic Trouble Code (DTC) B1995 in memory and flash Code 36 on AIR BAG warning light.

Left-side air bag circuit low resistance could be caused by damaged White/Light Blue wire (circuit No. 1257), damaged Brown/Light Blue wire (circuit No. 1258), damaged left side air bag module, damaged RCM or worn or damaged shorting bar or camming beam.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1995 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1995 was not retrieved, fault is intermittent. Go to step 6.
  2. Check left side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1995 is retrieved, go to next step. If DTC B1995 is not retrieved, go to step 5.
  3. Check left side air bag harness to seat harness Turn ignition switch to OFF position. Ensure RCM connector C2041B is connected. Remove left side air bag simulator from harness connector. Measure resistance between White/Light Blue and Brown/Light Blue wires on vehicle harness side of left side air bag module floor harness connector. If resistance is more than 10 k/ohms, go to next step. If resistance is less than 10 k/ohms, repair short between White/Light Blue and Brown/Light Blue wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 7.
  4. Check left side air bag circuits to seat harness Inspect all crimps, terminals, wires and connectors in circuit No. 1257 (White/Light Blue wire) between left side air bag module floor harness connector and RCM connector C2041B, terminal No. 2. (Scheme 70) Inspect all crimps, terminals, wires and connectors in circuit No. 1258 (Brown/Light Blue wire) between left side air bag floor harness connector and RCM connector C2041B, terminal No. 3. If any damage is found, repair as necessary. Go to step 7. If no damage is found, replace RCM. Go to step 7.
  5. Check left side air bag circuits to seat harness Turn ignition switch to OFF position. Access and disconnect left side air bag module connector from air bag module. See «SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between White/Light Blue and Brown/Light Blue wires on harness side of left side air bag module connector. If resistance is more than 10 k/ohms, replace left side air bag module. Go to step 7. If resistance is less than 10 k/ohms, repair short between White/Light Blue and Brown/Light Blue wires (between left side air bag module connector and floor harness connector). Go to step 7.
  6. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent low resistance in White/Light Blue and Brown/Light Blue wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  7. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST X: RIGHT SIDE AIR BAG CIRCUIT SHORT TO GROUND (DTC B1997)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) checks right side air bag module circuits for short to ground by monitoring voltage at RCM harness connector C2041B, terminals No. 5 (White/Yellow wire) and No. 6 (Brown/Yellow wire). If RCM detects resistance less than 1000 ohms at either terminal, it will store Diagnostic Trouble Code (DTC) B1997 in memory and flash Code 37 on AIR BAG warning light.

A right side air bag circuit short to ground could be caused by a short to ground in White/Yellow wire (circuit No. 1259), short to ground in Brown/Yellow wire (circuit No. 1260), short to ground in right side air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1997 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1997 was not retrieved, fault is intermittent. Go to step 7.
  2. Check right side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1997 is retrieved, go to step 5. If DTC B1997 is not retrieved, go to next step.
  3. Check right side air bag in-seat harness circuit for short to ground Turn ignition switch to OFF position. Access and disconnect right side air bag module harness connector from air bag module. See «SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance of White/Yellow wire between ground and harness side of right side air bag module harness connector. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). If resistance is less than 1000 ohms, repair short to ground in White/Yellow wire. Go to step 8. If resistance is more than 1000 ohms, go to next step.
  4. Check right side air bag in-seat harness circuit for short to ground Measure resistance of Brown/Yellow wire between ground and harness side of right side air bag module harness connector. If resistance is less than 1000 ohms, repair short to ground in Brown/Yellow wire. Go to step 8. If resistance is more than 1000 ohms, replace right side air bag module. Go to step 8. NOTE: Do not separate or remove shorting bars from RCM connector C2041B.
  5. Check right side air bag circuit to seat harness Turn ignition switch to OFF position. Access RCM and disconnect harness connectors C2041B and C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between harness side of RCM connector C2041B, terminal No. 5 (White/Yellow wire) and harness side of RCM connector C2041A, terminal No. 21 (Black/Orange wire, circuit No. 649). (Scheme 70) If resistance is less than 10 k/ohms, repair short to ground in White/Yellow wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). If resistance is more than 10 k/ohms, go to next step.
  6. Check right side air bag circuit to seat harness Disconnect right side air bag module simulator from harness connector. Inspect all crimps, terminals, wires and connectors in circuit No. 1259 (White/Yellow wire) between right side air bag module floor harness connector and RCM connector C2041B, terminal No. 5. Inspect all crimps, terminals, wires and connectors in circuit No. 1260 (Brown/Yellow wire) between right side air bag module floor harness connector and RCM connector C2041B, terminal No. 6. Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 8. If no damage is found, replace RCM. Go to step 8.
  7. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent short to ground in White/Yellow and Brown/Yellow wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  8. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST Y: RIGHT SIDE AIR BAG CIRCUIT SHORT TO BATTERY OR IGNITION (DTC B1996)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) checks right side air bag module circuits for short to battery or ignition by monitoring voltage at RCM harness connector C2041B, terminals No. 5 (White/Yellow wire) and No. 6 (Brown/Yellow wire). If RCM detects battery or ignition voltage, it will store Diagnostic Trouble Code (DTC) B1996 in memory and flash Code 37 on AIR BAG warning light.

A right side air bag circuit short to battery or ignition voltage could be caused by short to battery or ignition voltage in White/Yellow wire (circuit No. 1259), short to battery or ignition voltage in Brown/Yellow wire (circuit No. 1260), short to battery or ignition voltage in right side air bag module or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1996 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1996 was not retrieved, fault is intermittent. Go to step 7 .
  2. Check right side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1996 is retrieved, go to step 5 . If DTC B1996 is not retrieved, go to next step.
  3. Check right side air bag in-seat harness circuit for short to voltage Turn ignition switch to OFF position. Access and disconnect right side air bag harness connector from air bag module. See «SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Turn ignition to RUN position. Measure voltage in White/Yellow wire between ground and harness side of right side air bag module connector. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . If voltage is more than 10 volts, repair short to voltage in White/Yellow wire. Go to step 8 . If voltage is less than 10 volts, go to next step.
  4. Check right side air bag in-seat harness circuit for short to voltage Measure voltage in Brown/Yellow wire between ground and harness side of right side air bag module floor connector. If voltage is more than 10 volts, repair short to voltage in Brown/Yellow wire. Go to step 8 . If voltage is less than 10 volts, replace right side air bag module. Go to step 8 . NOTE: Do not separate or remove shorting bars from connector C2041B.
  5. Check right side air bag circuit to seat harness Turn ignition switch to OFF position. Disconnect negative battery cable. Access RCM and disconnect harness connectors C2041B and C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Turn ignition switch to RUN position. Measure resistance between harness side of RCM connector C2041B, terminal No. 5 (White/Yellow wire) and harness side of RCM connector C2041A, terminal No. 2 (Black/Light Green wire, circuit No. 364). If resistance is less than 10 k/ohms, repair short to voltage in White/Yellow wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . Go to step 8 . If resistance is more than 10 k/ohms, go to next step.
  6. Check right side air bag circuit to seat harness Disconnect right side air bag module simulator from harness connector. Inspect all crimps, terminals, wires and connectors in circuit No. 1259 (White/Yellow wire) between right side air bag module floor harness connector and RCM connector C2041B, terminal No. 5. Inspect all crimps, terminals, wires and connectors in circuit No. 1260 (Brown/Yellow wire) between right side air bag module floor harness connector and RCM connector C2041B, terminal No. 6. Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 8 . If no damage is found, replace RCM. Go to step 8 .
  7. Check for intermittent fault Refer to continuous DTCs recorded in step 1 . If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent short to voltage in White/Yellow and Brown/Yellow wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) . Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  8. Check for additional DTCs Refer to continuous DTCs recorded in step 1 . If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST Z: RIGHT SIDE AIR BAG CIRCUIT RESISTANCE HIGH (DTC B1998)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors resistance of right side air bag module circuit loop and air bag igniter at RCM connector C2041B terminals No. 5 (White/Yellow wire) and No. 6 (Brown/Yellow wire). If RCM detects resistance more than 3.6 ohms, it will store Diagnostic Trouble Code (DTC) B1998 in memory and flash Code 37 on AIR BAG warning light.

Right-side air bag circuit high resistance could be caused by damaged White/Yellow wire (circuit No. 1259), damaged Brown/Yellow wire (circuit No. 1260), damaged right side air bag module, RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1998 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1998 was not retrieved, fault is intermittent. Go to step 7.
  2. Check right side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1998 is retrieved, go to step 5. If DTC B1998 is not retrieved, go to next step.
  3. Check right side air bag in-seat harness circuit for high resistance Turn ignition switch to OFF position. Access and disconnect right side air bag harness connector from air bag module. See «SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance in White/Yellow wire between harness side of right side air bag module in-seat harness connector and seat side of right side air bag module floor harness connector. If resistance is more than one ohm, repair open in White/Yellow wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 8. If resistance is less than one ohm, go to next step.
  4. Check right side air bag in-seat harness circuit for high resistance Measure resistance in Brown/Yellow wire between harness side of right side air bag module in-seat harness connector and seat harness side of right side air bag module floor harness connector. If resistance is more than one ohm, repair open in Brown/Yellow wire. Go to step 8. If resistance is less than one ohm, replace right side air bag module. Go to step 8. NOTE: By disconnecting RCM connector C2041B, circuit No. 1259 (White/Yellow wire) and No. 1260 (Brown/Yellow wire) are shorted together with shorting bar. Do not remove shorting bar.
  5. Check right side air bag circuit to seat harness for high resistance Turn ignition switch to OFF position. Access RCM and disconnect harness connector C2041B. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Remove right side air bag module simulator from harness connector. Zero ohmmeter. Measure resistance between White/Yellow and Brown/Yellow wires on vehicle harness side of right side air bag module floor harness connector. If resistance is more than one ohm, repair open in appropriate wire. Go to step 8. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). If resistance is less than one ohm, replace RCM. Go to next step.
  6. Check right side air bag circuits to seat harness Inspect all crimps, terminals, wires and connectors in circuit No. 1259 (White/Yellow wire) between right side air bag module floor harness connector and RCM connector C2041B, terminal No. 5. (Scheme 70) Inspect all crimps, terminals, wires and connectors in circuit No. 1260 (Brown/Yellow wire) between right side air bag module floor harness connector and RCM connector C2041B, terminal No. 6. Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step 8. If no damage is found, replace RCM. Go to step 8.
  7. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent high resistance in White/Yellow and Brown/Yellow wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  8. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST AA: RIGHT SIDE AIR BAG CIRCUIT RESISTANCE LOW (DTC B1999)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Diagnostic tests or repairs are not to be performed on side air bag system with front seats installed in vehicle. Prior to diagnosis or repair of side air bag, remove front seats and ensure appropriate air bag simulators are installed at side air bag connectors. See FRONT SEAT under REMOVAL & INSTALLATION.

Restraints Control Module (RCM) monitors resistance of right side air bag module circuit loop and air bag igniter at RCM connector C2041B terminals No. 5 (White/Yellow wire) and No. 6 (Brown/Yellow wire). If RCM detects resistance less than 1.4 ohms, it will store Diagnostic Trouble Code (DTC) B1999 in memory and flash Code 37 on AIR BAG warning light.

Right-side air bag circuit low resistance could be caused by damaged White/Yellow wire (circuit No. 1259), damaged Brown/Yellow wire (circuit No. 1260), damaged right side air bag module, damaged RCM or worn or damaged shorting bar or camming beam.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1999 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1999 was not retrieved, fault is intermittent. Go to step 6.
  2. Check right side air bag module Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1999 is retrieved, go to next step. If DTC B1999 is not retrieved, go to step 5.
  3. Check right side air bag harness to seat harness Turn ignition switch to OFF position. Ensure RCM connector C2041B is connected. Remove right side air bag simulator from harness connector. Measure resistance between White/Yellow and Brown/Yellow wires on vehicle harness side of right side air bag module floor harness connector. If resistance is more than 10 k/ohms, go to next step. If resistance is less than 10 k/ohms, repair short between White/Yellow and Brown/Yellow wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 7.
  4. Check right side air bag circuits to seat harness Inspect all crimps, terminals, wires and connectors in circuit No. 1259 (White/Yellow wire) between right side air bag module floor harness connector and RCM connector C2041B, terminal No. 5. (Scheme 70) Inspect all crimps, terminals, wires and connectors in circuit No. 1260 (Brown/Yellow wire) between right side air bag floor harness connector and RCM connector C2041B, terminal No. 6. If any damage is found, repair as necessary. Go to step 7. If no damage is found, replace RCM. Go to step 7.
  5. Check right side air bag circuits to seat harness Turn ignition switch to OFF position. Access and disconnect right side air bag module connector from air bag module. See «SIDE AIR BAG MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between White/Yellow and Brown/Yellow wires on harness side of right side air bag module connector. If resistance is more than 10 k/ohms, replace right side air bag module. Go to step 7. If resistance is less than 10 k/ohms, repair short between White/Yellow and Brown/Yellow wires (between right side air bag module connector and floor harness connector). Go to step 7.
  6. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was a intermittent fault, check for cause of intermittent low resistance in White/Yellow and Brown/Yellow wires. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not a intermittent fault, go to next step.
  7. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST AB: AIR BAG TONE WARNING INDICATOR CIRCUIT SHORT TO GROUND OR OPEN (DTC B1892)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) monitors its connection to Generic Electronic Module (GEM) at RCM connector C2041A, terminal No. 26 (Light Blue/Black wire). This connection is used to signal a chime if AIR BAG warning light is inoperative and another air bag system fault exists. If RCM detects a short or open in connection to GEM, it will store Diagnostic Trouble Code (DTC) B1892 in memory.

Air bag tone warning indicator circuit shorted to ground or open could be caused by short to ground or open in Light Blue/Black wire (circuit No. 1083), damaged or inoperative GEM or RCM internal fault.

Scheme 72

Scheme 72: Possible Causes
Scheme 72: Possible Causes
  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1892 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1892 was not retrieved, fault is intermittent. Go to step 5.
  2. Check air bag tone warning indicator circuit Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Access GEM and disconnect 26-pin harness connector. See «GENERIC ELECTRONIC MODULE (GEM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__generic-electronic-module-gem) under REMOVAL & INSTALLATION. Measure resistance between harness side of RCM connector C2041A, terminals No. 26 (Light Blue/Black wire) and No. 21 (Black/Orange wire, circuit No. 649). (Scheme 70) If resistance is more than 10 k/ohms, go to next step. If resistance is less than 10 k/ohms, repair short to ground in Light Blue/Black wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 6.
  3. Check air bag tone warning indicator circuit for open Measure resistance of Light Blue/Black wire between harness side of RCM connector C2041A, terminal No. 26 and harness side of GEM connector terminal No. 20. (Scheme 70)& (Scheme 72). If resistance is less than 10 ohms, go to next step. If resistance is more than 10 ohms, repair open in Light Blue/Black wire. Go to step 6.
  4. Check air bag tone warning indicator Reconnect GEM 26-pin harness connector. Turn ignition to RUN position. Measure voltage between ground and harness side of RCM connector C2041A, terminal No. 26 (Light Blue/Black wire). If voltage is less than one volt, replace GEM. Go to step 6. If voltage is more than one volt, replace RCM. Go to step 6.
  5. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent short to ground or open in Light Blue/Black wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST AC: AIR BAG TONE WARNING INDICATOR CIRCUIT SHORT TO BATTERY OR IGNITION (B1891)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

Restraints Control Module (RCM) monitors its connection to Generic Electronic Module (GEM) at RCM connector C2041A, terminal No. 26 (Light Blue/Black wire). This connection is used to signal a chime if AIR BAG warning light is inoperative and another air bag system fault exists. If RCM detects a short to battery or ignition in connection to GEM, it will store Diagnostic Trouble Code (DTC) B1891 in memory.

Air bag tone warning indicator circuit shorted to battery or ignition voltage could be caused by short to battery or ignition voltage in Light Blue/Black wire (circuit No. 1083), damaged or inoperative GEM or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1891 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1891 was not retrieved, fault is intermittent. Go to step 4.
  2. Check air bag tone warning indicator circuit Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Leave negative battery cable disconnected. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Access GEM and disconnect 26-pin harness connector. See «GENERIC ELECTRONIC MODULE (GEM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__generic-electronic-module-gem) under REMOVAL & INSTALLATION. Turn ignition switch to RUN position. Measure resistance between harness side of RCM connector C2041A, terminals No. 26 (Light Blue/Black wire) and No. 2 (Black/Light Green wire, circuit No. 364). (Scheme 70) If resistance is less than 10 k/ohms, repair short to battery in Light Blue/Black wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 5. If resistance is more than 10 k/ohms, go to next step.
  3. Check air bag tone warning indicator Turn ignition switch to OFF position. Reconnect negative battery cable. Reconnect GEM 26-pin harness connector. Turn ignition to RUN position. Connect fused jumper wire between ground and harness side of RCM connector C2041A, terminal No. 26 (Light Blue/Black wire). Listen for audible warning tone. If warning tone was heard, replace RCM. Go to step 5. If warning tone was not heard, replace GEM. Go to step 5.
  4. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent short to ground or open in Light Blue/Black wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  5. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST AD: AIR BAG WARNING LIGHT INOPERATIVE (DTC B1869)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

AIR BAG warning light is designed to illuminate for 6 seconds when ignition switch is turned to RUN position. The initial 6 second illumination is normal and is call prove-out. The AIR BAG warning light is then used to warn vehicle operator that there is a fault in the air bag system.

Restraints Control Module (RCM) monitors AIR BAG warning light for open and short to ground conditions. If RCM detects open or short to ground in AIR BAG warning light circuit, it will store Diagnostic Trouble Code (DTC) 1869 in memory. If RCM detects AIR BAG warning light failure in addition to another air bag system failure, it will send signal to Generic Electronic Module (GEM) to produce 5 sets of 5 tone bursts.

AIR BAG warning light inoperative condition could be caused by damaged Black/Yellow wire (circuit No. 608), damaged or burned out bulb, worn or damaged instrument cluster malfunction or RCM internal fault.

Scheme 73

Scheme 73: Possible Causes
Scheme 73: Possible Causes
  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1869 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1869 was not retrieved, fault is intermittent. Go to step 5.
  2. Check RCM Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between chassis ground and component side of RCM connector C2041A, pin No. 20. (Scheme 73) If resistance is more than 100 ohms, go to next step. If resistance is less than 100 ohms, replace RCM. Go to step 6.
  3. Check circuit for short to ground Turn ignition switch to OFF position. Reconnect RCM harness connector C2041A. Access and disconnect instrument cluster 10-pin harness connector C220C. See «INSTRUMENT CLUSTER»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Measure resistance between ground and harness side of instrument cluster connector C220C, terminal No. 4 (Black/Yellow wire, circuit No. 608). (Scheme 71) If resistance is less than 100 ohms, repair short to ground in Black/Yellow wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 6. If resistance is more than 100 ohms, go to next step.
  4. Check circuit for open Disconnect RCM harness connector C2041A. Measure resistance between harness side of RCM connector C2041A, terminal No. 20 and harness side of instrument cluster connector C220C, terminal No. 4 (Black/Yellow wire). (Scheme 70)& (Scheme 71). If resistance is more than 10 ohms, repair open in Black/Yellow wire. Go to next step. If resistance is less than 10 ohms, go to next step.
  5. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent short to ground or open in Black/Yellow wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  6. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

TEST AE: AIR BAG WARNING LIGHT SHORT TO BATTERY VOLTAGE (DTC B1870)

Note. Before proceeding, see AIR BAG SAFETY PRECAUTIONS .

AIR BAG warning light is designed to illuminate for 6 seconds when ignition switch is turned to RUN position. The initial 6-second illumination is normal and is call prove-out. The AIR BAG warning light is then used to warn vehicle operator that there is a fault in the air bag system.

Restraints Control Module (RCM) monitors AIR BAG warning light for short to battery voltage conditions. If RCM detects short to battery voltage in AIR BAG warning light circuit, it will store Diagnostic Trouble Code (DTC) 1870 in memory. In RCM detects AIR BAG warning light failure in addition to another air bag system failure, it will send signal to Generic Electronic Module (GEM) to produce 5 sets of 5 tone bursts.

AIR BAG warning light inoperative condition could be caused by damaged Black/Yellow wire (circuit No. 608), instrument cluster malfunction or RCM internal fault.

  1. Check for hard or intermittent DTC Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See «USING SCAN TOOL»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__using-scan-tool) under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See «RETRIEVING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__retrieving-fault-codes) under DIAGNOSTICS. Perform on-demand self-test. See «ON-DEMAND SELF-TEST»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__on-demand-self-test) under DIAGNOSTICS. If DTC B1870 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1870 was not retrieved, fault is intermittent. Go to step 4.
  2. Check AIR BAG warning light circuit Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Turn ignition switch to RUN position. If AIR BAG warning light illuminates, replace RCM. Go to step 4. If AIR BAG warning light does not illuminate, inspect AIR BAG warning light bulb. If bulb is okay, repair Black/Yellow wire as necessary. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Go to step 4.
  3. Check AIR BAG warning light circuit for short to battery Turn ignition switch to OFF position. Access and disconnect instrument cluster 10-pin harness connector C220C. See «INSTRUMENT CLUSTER»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Disconnect negative battery cable. Turn ignition switch to RUN position. Measure resistance between harness side of RCM connector C2041A, terminals No. 2 (Black/Light Green wire, circuit No. 364) and No. 20 (Black/Yellow wire). (Scheme 70) If resistance is less than 10 k/ohms, repair short to battery in Black/Yellow wire. Go to step 5. If resistance is more than 10 k/ohms, repair instrument cluster. Go to step 5.
  4. Check for intermittent fault Refer to continuous DTCs recorded in step 1. If DTC retrieved in step 1 was an intermittent fault, check for cause of intermittent short to battery in Black/Yellow wire. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step 1 was not an intermittent fault, go to next step.
  5. Check for additional DTCs Refer to continuous DTCs recorded in step 1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. DO NOT clear any DTCs until all DTCs have been resolved. See «DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) table. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See «CLEARING FAULT CODES»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__clearing-fault-codes) under DIAGNOSTICS.

Restraints Control Module (RCM) communicate with scan tool using International Standards Organization (ISO) 9141 communication mode through Data Link Connector (DLC).

A no communication condition can be caused by damage to Light Blue/White wire (circuit No. 70), damaged DLC, damaged scan tool or RCM internal fault.

Scheme 74

Scheme 74: Possible Causes
Scheme 74: Possible Causes
  1. Check RCM connector & pin for damage Turn ignition switch to OFF position. Disable air bag system. See «DISABLING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Access RCM and disconnect harness connector C2041A. See «RESTRAINTS CONTROL MODULE (RCM)»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Inspect RCM connector C2041A, terminal No. 5 (Light Blue/White wire), component side and harness side, for damage. (Scheme 70)& (Scheme 73). If module pin and module harness connector C2041A, terminal No. 5 are okay, go to next step. If module pin and module harness connector C2041A, terminal No. 5 are damaged, repair or replace as necessary. Activate air bag system. See «ACTIVATING SYSTEM»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems) under DISABLING & ACTIVATING AIR BAG SYSTEM.
  2. Check DLC for damage Inspect Data Link Connector (DLC) and DLC connector terminal No. 7 (Light Blue/White wire) for damage. (Scheme 74) DLC is located under center of instrument panel. If DLC connector and DLC connector terminal No. 7 is okay, go to next step. If DLC connector and DLC connector terminal No. 7 is damaged, repair or replace as necessary. Activate air bag system.
  3. Check circuit for short to battery Measure voltage of Light Blue/White wire between ground and DLC connector terminal No. 7. (Scheme 74) If any voltage can be measured, repair short to battery in Light Blue/White. See «WIRING DIAGRAMS»(/ford/explorer-sport-trac/i-2000-2005/remont/airbag/#air-bag-restraint-systems). Reconnect air bag system. Activate air bag system. If voltage cannot be measured, go to next step.
  4. Check circuit for open Measure resistance of Light Blue/White wire between RCM connector C2041A, terminal No. 5 and DLC connector terminal No. 7. If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in Light Blue/White wire. Reconnect air bag system. Activate air bag system.
  5. Check circuit for open Measure resistance of Light Blue/White wire between ground and DLC connector terminal No. 7. If resistance is less than 10 k/ohms, repair short to ground in Light Blue/White wire. Reconnect air bag system. Activate air bag system. If resistance is more than 10 k/ohms, replace RCM. Reconnect air bag system. Activate air bag system.

WIRE REPAIR

To repair damage to sensor wiring and wiring harnesses, note following conditions and go to REPAIR PROCEDURE .

  1. All wire splice connections must be staggered at least 2" (50 mm) apart.
  2. Use proper size, waterproof butt-splice connectors on any exposed wiring.
  3. Use heat shrink nylon splice to prevent water, salt, condensation and heat from affecting the wiring repair.
  4. Use transparent splice connectors to allow inspection of finished splice.

REPAIR PROCEDURE

Insert pre-stripped wire ends into proper size waterproof butt-splice connector, and crimp connector using appropriate crimping pliers. (Scheme 75) Using heat gun, hair dryer or match, heat splice until it shrinks and adhesive oozes from each end of tubing. Connection is now waterproofed.

Scheme 75

Scheme 75: REPAIR PROCEDURE
Scheme 75: REPAIR PROCEDURE

TORQUE SPECIFICATIONS

ApplicationFt. Lbs. (N.m)
Front seat
Back pivot mounting bolt21 (29)
Back recliner mounting bolts38 (52)
Track mounting bolts15 (20)
Track anchor mounting bolts18 (25)
RCM mounting bolts17 (23)
Seat belt
Anchor mounting bolts30 (40)
Guide mounting bolts30 (40)
Steering column-to-instrument panel mounting bolts11 (15)
Steering wheel mounting bolt25 (34)
INCH Lbs. (N.m)
Driver-side air bag module mounting bolts80 (9)
Hood release handle mounting bolts27 (3)
Lower steering column opening finish panel reinforcement mounting bolts106 (12)
Lower steering column opening finish panel retaining screws27 (3)
Passenger-side air bag module mounting bolts80 (9)
Rear quarter glass latch retaining screws80 (9)
Side air bag module mounting nuts80 (9)
Side air bag crash sensor bracket mounting bolts106 (12)

TORQUE SPECIFICATIONS

Air Bag System Wiring Diagram (Explorer Sport & Explorer Sport Trac). Scheme 76

Scheme 76: Air Bag System Wiring Diagram (Explorer Sport & Explorer Sport Trac)
Scheme 76: Air Bag System Wiring Diagram (Explorer Sport & Explorer Sport Trac)

See also:
• AIR BAG/SRS COMPONENT INSPECTION & REPLACEMENT TABLES
• AIR BAG SAFETY PRECAUTIONS
• COMPONENT LOCATIONS
• DIAGNOSTICS
• DIAGNOSTIC SYMPTOMS
• DISABLING SYSTEM
• DISPOSAL PROCEDURES
• SYSTEM OPERATION CHECK
• CLOCKSPRING CENTERING
• DIAGNOSTICS DISABLING PROCEDURE
• AIR BAG SIMULATOR
• COMPONENT REPLACEMENT DISABLING PROCEDURE
• DIAGNOSTICS ACTIVATING PROCEDURE
• UNDEPLOYED AIR BAG-FAULTY UNIT
• SCRAPPED VEHICLE
• REMOVAL & INSTALLATION
• STEERING WHEEL
• TORQUE SPECIFICATIONS
• RETRIEVING FAULT CODES
• ON-DEMAND SELF-TEST
• USING SCAN TOOL
• TEST S: RIGHT SIDE CRASH SENSOR COMMUNICATION FAULT (DTC U2018)
• TEST A
• TEST AD
• TEST AE
• TEST C
• TEST B
• TEST F
• TEST G
• TEST AC
• TEST AB
• TEST H
• TEST D
• TEST I
• TEST J
• TEST K
• TEST L
• TEST M
• TEST U
• TEST T
• TEST V
• TEST W
• TEST Y
• TEST X
• TEST Z
• TEST AA
• TEST Q
• TEST P
• TEST N
• TEST O
• TEST E
• TEST R
• CLEARING FAULT CODES
• SIDE CRASH SENSORS
• GENERIC ELECTRONIC MODULE (GEM)
• REPAIR PROCEDURE

More articles — Restraints