Seat Belts - Automatic Ford Escort V

CONTROL MODULE CONNECTOR PIN I.D.

CONTROL MODULE CONNECTOR PIN IDENTIFICATION (1)

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SYMPTOM/CONDITION-TO-PINPOINT TEST MENU

Note. The limit switches are energized for only 7-10 seconds in order to monitor the movement of the belt. After the appropriate switch(s) signals the module, power to the limit switch(s) is cut off.

Note. For best results, use Rotunda DVOM (105-00051) with the accompanying RESTRAINT SYSTEM COMPONENT ELECTRICAL TESTS tables below in this article.

Symptom/Condition-To-Test Menu. Scheme 7

Restraint System Component Electrical Tests (Tests 1-6). Scheme 8

Restraint System Component Electrical Tests (Tests 7-10). Scheme 9

Restraint System Component Electrical Tests (Tests 11-15). Scheme 10

Restraint System Component Electrical Tests (Tests 16-19). Scheme 11

DESCRIPTION

The Passive Restraint System operates electrically. After entering the vehicle, closing the door and turning the ignition to the ON position, signals from the door ajar switch(s) are sent to the control module. The control module interprets this input and actuates the retractor motor(s) to cause the shoulder belt(s) to slide along a belt track starting at the front body A-pillar (OFF position) and moving rearward to its locked position at the B-pillar (ON position).

The shoulder belt will automatically adjust itself to allow comfort and freedom of movement. It will lock tight only under heavy braking or impacts of approximately 3 mph (5km/h) or more.

When a door is opened, the shoulder belt carrier will move forward to the OFF position regardless of the position of the ignition switch. When the inertia switch is activated due to an accident or hard braking, the shoulder belt will stay in the ON position.

Most servicing of the passive restraint system is broken into two parts, the A-pillar limit switch and the track/motor assembly. The track/motor assembly contains the B-pillar limit switch.

A manual override cranking lever is used for emergency operation of the passive restraint system retractor motor.

Moving Driver's Side Carrier From A-Pillar to B-Pillar

With the door closed and the ignition in the ON position, the control module checks the B-pillar limit switch Pin No. 13, for a floating (not grounded) condition. If the B-pillar limit switch is not activated (floating/not grounded), the control module will supply voltage to the retractor motor, sending the carrier from the A-pillar to the B-pillar (Voltage to Pin Nos. 2 and 17, Pin Nos. 3 and 4 grounded). The carrier will travel toward the B-pillar until the B-pillar limit switch is activated (Pin No. 18 is grounded). If Pin 18 is grounded, the carrier will not move.

Moving Passenger's Side Carrier From A-Pillar to B-Pillar

With the door closed and the ignition in the ON position, the control module checks the B-pillar limit switch Pin No. 8 for an open (not grounded) condition. If the B-pillar limit switch is not activated (open/not grounded), the control module will supply voltage to the retractor motor, sending the carrier from the A-pillar to the B-pillar (Voltage to Pin Nos. 9 and 22, Pin Nos. 10 and 11 grounded). The carrier will travel toward the B-pillar until the B-pillar limit switch is activated (Pin No. 21 is grounded). If Pin 21 is grounded, the carrier will not move.

Moving Driver's Side Carrier From B-Pillar to A-Pillar

With the door closed and the ignition in the ON position, the control module checks B-pillar limit switch Pin No. 13, for a grounded condition, the inertia switch Pin No. 12 for an open condition, and the A-pillar limit switch Pin No. 5 for an open condition. If the A-pillar limit switch is not activated (open/not grounded), the control module will supply voltage to the retractor motor, sending the carrier from the B-pillar to the A-pillar (Voltage to Pin Nos. 3 and 4, Pin Nos. 2 and 17 grounded). The carrier will travel toward the A-pillar until the A-pillar limit switch is activated (Pin No. 5 is grounded). If Pin 5 is grounded, or if the inertia switch is tripped (Pin No. 12 grounded), the carrier will not move.

Moving Passenger's Side Carrier From B-Pillar to A-Pillar

With the door closed and the ignition in the ON position, the control module checks B-pillar limit switch Pin No. 8, for a grounded condition, the inertia switch Pin No. 12 for an open condition, and the A-pillar limit switch Pin No. 23 for an open condition. If the A-pillar limit switch is not activated (open/not grounded), the control module will supply voltage to the retractor motor, sending the carrier from the B-pillar to the A-pillar (Voltage to Pin Nos. 10 and 11, Pin Nos. 9 and 22 grounded). The carrier will travel toward the A-pillar until the A-pillar limit switch is activated (Pin No. 23 is grounded). If Pin 8 is grounded, or if the inertia switch is tripped (Pin No. 12 grounded), the carrier will not move.

SEAT BELT MANUAL OVERRIDE

The seat belt manual override is a hand cranking of the electric motor in case of emergency or loss of electric power. The motor is access through a cover in the lower trim panel area, to the rear of the door opening. The emergency lever is located in the owner's portfolio in the glovebox.

SEAT BELT WARNING LAMP

When the control module determines that the "Fasten Seat Belt" warning lamp needs to be illuminated, the Fasten Belt Indicator (FBI) circuit (Pin No. 16) grounds the circuit to illuminate the lamp. Conditions that cause the lamp to illuminate are as follows

Normal Conditions

1. Ignition key is in the ON position (Voltage to Pin No. 25)
2. Both B-pillar limit switches are not activated (Pin Nos. 18 or 21 are open/not grounded).

Alternate Conditions

1. Ignition key is in the ON position (Voltage to Pin No. 25)
2. Either shoulder belt is spooled in (Pin No. 14 or 15 is open/not grounded).

WARNING CHIME

When the control module determines that the warning chime needs to be sounded, the audible chime output circuit (Pin No. 1) grounds the circuit, to sound the chime. Conditions that cause the chime to sound for 5 seconds are as follows

1. Ignition key is in the ON position (Voltage to Pin No. 25)
2. Either shoulder belt is spooled in (Pin No. 14 or 15 is open/not grounded).

If the chime output has been triggered and timed out (sounded for 5 seconds), it can be reactivated by spooling in the other shoulder belt (Pin No. 14 or 15 open/not grounded).

MANUAL OVERRIDE SYSTEM

If the shoulder belt does not move or stops before reaching the B-pillar position, perform the following steps before driving the vehicle.

Scheme 12

Scheme 13

1. Open and close door(s). Make sure the door is completely closed to verify that the door actually is not working. Using a coin or screwdriver, remove cover at lower end of the B-pillar interior trim panel. (Scheme 12)and (Scheme 13).
2. Pull on the white tab to access the electrical connector. Disconnect the electrical connector. Locate the emergency handle in the owner's portfolio and insert it into the hex nut.
3. For the driver's side, turn the override knob clockwise to move shoulder belt manually until it stops at the B-pillar. For the Passenger's side, turn the override knob counter-clockwise to move shoulder belt manually until it stops at the B-pillar. WARNING: If it's necessary to use the override knob to move the shoulder belt into position, have the system serviced by a qualified technician as soon as possible. Figs. (Scheme 12) and (Scheme 13)
4. If the belt does not move to the B-pillar, the belt may be broken or the motor drive gear stripped. Grasp the belt and pull it towards the B-pillar while turning the knob on the motor clockwise. This should move the belt to the lowest position on the B-pillar. This will allow the occupant(s) to position the belt manually over the shoulder until the system can be serviced properly.

DIAGNOSTIC TIPS

Note. The limit switches are energized for only 7-10 seconds in order to monitor the movement of the belt. After the appropriate switch(s) signals the module, power to the limit switch(s) is cut off.

Note. For best results, use Rotunda DVOM (105-00051) with the accompanying RESTRAINT SYSTEM COMPONENT ELECTRICAL TESTS tables below in this article.

TROUBLE SHOOTING DIAGNOSTIC TIPS

SEAT BELT FUNCTIONALITY CHECK

SEAT BELT FUNCTIONALITY CHECK

WARNING INDICATORS FUNCTIONALITY CHECK

WARNING INDICATORS FUNCTIONALITY CHECK

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1. Disconnect battery ground cable. Unbuckle shoulder belt from carrier. (Scheme 15) Cycle the shoulder belt carrier to the B-pillar (retracted position).
2. Remove A-pillar and B-pillar trim panels. Disconnect front limit switch electrical connector. (Scheme 15)
3. Disconnect 2 electrical connectors from track and motor assembly. (Scheme 16)& 12. Remove all track and motor assembly attaching bolts and screws. (Scheme 18) Remove track and motor assembly.

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Scheme 19

1. Place track and motor assembly and hold into position with one of the mounting bolts. (Scheme 19) Connect the 2 electrical connectors. Install the motor mounting bolts and tighten to 69-104 INCH Lbs. (8-12 N.m). Install the 2 track mounting bolts at the rear limit switch and tighten to 13-19 Ft. Lbs (18-25 N.m).
2. Install the remaining track mounting bolts and tighten to 69-104 INCH Lbs. (8-12 N.m). Connect the front limit switch electrical connector. Install A-pillar and B-pillar trim panels. Connect shoulder belt to the carrier.
3. Connect battery ground cable. Cycle passive restraint system to verify proper operation.

Scheme 20

1. Disconnect negative battery cable. Remove parking brake console attaching screws. Lift up parking brake console, remove shoulder belts from console, then remove parking brake console. Disconnect electrical connectors. (Scheme 20)
2. Slide seats forward. Remove front shoulder belt retractor assembly mounting bolts. Remove front shoulder belt retractor assembly.

Installation

1. Place front shoulder belt retractor assembly into position. Install mounting bolts and tighten to 28-58 Ft. Lbs. (38-78 N.m). Connect electrical connector.
2. Position shoulder belts through the openings in the parking brake console and install the parking brake console. Install parking brake console attaching screws.
3. Connect battery negative cable. Cycle the passive restraint system to verify proper operation.

Removal

Disconnect negative battery cable. Remove 2 control module mounting bracket attaching bolts. (Scheme 21) Disconnect module connectors. (Scheme 22) Remove module.

Scheme 21

Scheme 22

Connect electrical connectors. Install control module and tighten the 2 attaching bolts. Connect battery negative cable. Cycle the passive restraint system to verify proper operation.

Remove the track and motor assembly. See TRACK & MOTOR ASSEMBLY under REMOVAL & INSTALLATION above in this article. Remove the roll pin. Slide front limit switch from track. (Scheme 23)

Scheme 23

1. Slide limit switch into track and align holes for the roll pin. Install Roll pin. To install track and motor assembly, refer to «TRACK & MOTOR ASSEMBLY»(/ford/escort/v-1990-1992/remont/passive-restraints/#seat-belts-automatic) under REMOVAL & INSTALLATION above in this article.
2. Cycle passive restraint system to verify proper operation.

Removal & Installation

The rear limit switch is serviced with the track and motor as an assembly. See TRACK & MOTOR ASSEMBLY under REMOVAL & INSTALLATION above in this article.

The warning limit switch is serviced with the retractor as an assembly. See FRONT SHOULDER BELT RETRACTOR ASSEMBLY under REMOVAL & INSTALLATION above in this article.

DOOR AJAR SWITCH

Note. The door ajar switch is serviced with the door latch as an assembly.

Scheme 24

1. Remove door trim panel and weather sheet. (Scheme 24) Remove clip and detach outside handle rod from outside door handle.
2. Remove clip and detach lock knob rod from latch. Remove lock nob rod from top of door. Remove clip and detach lock cylinder rod from lock cylinder.
3. Disengage clip and remove power door lock actuator rod from latch (If equipped). Disconnect electrical connector. Remove 3 latch retaining screws. Remove latch with inside and outside handle rods as an assembly.

To install, reverse removal procedure. (Scheme 24) Tighten latch retaining screws to 39-52 INCH Lbs. (5-6 N.m)

Scheme 25

1. Remove door trim panel and weather sheet. (Scheme 25) Remove clip and detach outside handle rod from outside door handle.
2. Remove clip and detach bellcrank rod from latch. Lower rod to bottom of door.
3. Disengage clip and remove power door lock actuator rod from latch (If equipped). Disconnect electrical connector. Remove 3 latch retaining screws. Remove latch with outside handle rod as an assembly.

To install, reverse removal procedure. (Scheme 25) Tighten latch retaining screws to 39-52 INCH Lbs. (5-6 N.m)

Remove retractor bezel attaching screws. Pull lap belt from retractor bezel. Remove bezel. Move carpet to allow access to retractor mounting bolts. (Scheme 26) Remove mounting bolts and lap belt retractor.

Scheme 26

To install, reverse removal procedure. (Scheme 26) Tighten lap belt retractor mounting bolts to 28-58 Ft. Lbs. (38-78 N.m).

Remove buckle mounting bolt. On Driver's side, disconnect warning buzzer electrical connector. Remove buckle. To install, reverse removal procedure. Tighten lap belt buckle mounting bolt to 28-58 Ft. Lbs. (38-78 N.m).

Scheme 27

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Scheme 29

1. Remove rear speaker and grill assembly. Remove trunk side trim panel. For station wagon models, remove the C-pillar trim panel. Remove rear shoulder belt retractor mounting bolts. (Scheme 27)-24.
2. Remove rear shoulder belt guide mounting bolts. Pull up rear seat cushion to gain access to the rear shoulder belt anchor. remover rear shoulder bolt anchor mounting bolts. Remove rear shoulder belt retractor assembly.

To install, reverse removal procedure. (Scheme 27)-24. Tighten rear shoulder belt retractor, guide, and anchor mounting bolts to 28-58 Ft. Lbs. (38-78 N.m).

Pull up rear seat cushion to gain access to rear and center lap belt buckles. Remove buckle mounting bolt(s). Remove buckle. To install, reverse removal procedure. Tighten lap belt buckle mounting bolt to 28-58 Ft. Lbs. (38-78 N.m).

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TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

See also:
• TRACK & MOTOR ASSEMBLY