sensor JAGUAR X308 1998 2.G Workshop Manual

A pyrotechnic front seat belt pre-tensioning device with independent el ectronic sensing and retractor unit is installed at the
base of each 'B' post. In the event of se vere frontal impact, this provides additional front occupant protection by removing
any excess slack from the seat be lt. Seat belt pre-tensioning activates when a frontal impact of sufficient force occurs within
30 degrees of vehicle center line. Under such an impact, el ectronic sensors in the retractor unit fire, igniting the pre-
tensioner gas generator. The ga s generator initiates a chemical reaction, producing gases under pressure. Gas pressure
drives the piston/cable up a tube, rotating the retractor sp indle and removing excess slack from the seat belt. When the
pre-tensioner unit has been activated, the seat belt will lock and cannot be retracted or pulled from the reel.If a seat belt
pre-tensioner activates, a small quantity (less than 1 liter) of gas is produced containing nitrogen, oxygen and water vapor.

Supplemental Restraint System -
Torques


ComponentNm
Screws, front seat belt height adjuster to B/C post LH and RH24 - 26
Nut, seat belt upper anchor to height adjuster LH and RH30 - 40
Bolt, LH and RH rear seat belt lower anchor to BIW30 - 40
Bolt, centre rear seat belt lower anchor to BIW30 - 40
Bolts, rear seat belt automatic locking re tractor LH, RH and centre to squab panel30 - 40
Bolt, rear seat belt buckle LH, RH and centre to BIW30 - 40
Bolt, front seat belt buckle LH and RH to seat rail30 - 40
Bolt, front seat belt lower an chor LH and RH to seat rail30 - 40
Bolts, front seat belt automatic lock ing retractor/pretensioner to B post30 - 40
Bolts, side airbag to seat frame9 - 11
Screws, front seat belt guide to B/C post8 - 10
Screws, single point sensor to tunnel5 - 7
Screws, side impact sens ing module to 'B' post5 - 7

Supplemental Restraint System - Air Bag Control Module
Removal and Installation
Removal
Installation

1.
WARNING: FOLLOWING DISCONNECTION OF THE
BATTERY, A PERIOD OF AT LEAST ONE MINUTE MUST BE
ALLOWED TO ELAPSE BEFORE ANY WORK IS CARRIED OUT ON
AN AIR BAG SYSTEM COMPONENT.
Remove battery cover and disc onnect ground cable from
battery terminal. Refer to 86.15.19.
2. Remove 'J' gate surroun d. Refer to 76.25.24.
3. Remove centre console veneer panel. Refer to 76.47.26.
4. Remove radio. Re fer to 86.50.03.

5. Release single point sensor ha rness multiplug retaining lever
and disconnect multiplug.

6. NOTE: The serial num bers of all supplementary restraint
system components must always be recorded against the VIN of
the vehicle.
Slacken and remove single point sensor securing bolts and
remove sensor from vehicle.
1. Position sensor on tunnel and fit and tighten securing bolts.
2. Connect single point sensor harn ess multiplug and secure with
retaining lever.
3. Fit radio.Refer to 86.50.03.
4. Fit centre console veneer panel. Refer to 76.47.26.
5. Fit 'J' gate surround. Refer to 76.25.24.
6. Connect ground cable to battery terminal and fit battery cover.
Refer to 86.15.15.

Supplemental Restraint System - Side Impact Sensor
Removal and Installation
Removal
• WARNINGS:
FOLLOWING DISCONNECTION OF THE BA TTERY, A PERIOD OF AT LEAST FIFTEEN MINUTES MUST BE ALLOWED TO
ELAPSE BEFORE DISCONNECTING THE SINGLE-POINT SENSING (SPS) UNIT.
IN THE EVENT OF A FAULT RUPTURING THE 10A BATTER Y SUPPLY FUSE (F4 LOCATED IN THE FUSE-BOX AT THE
DRIVER'S END OF THE FASCIA), THE FUSE MUST NOT BE RENEWED UNTIL THE AIRBAG/SRS SYSTEM HAS BEEN DE-
ACTIVATED. FUSES OF ANY OTHER VALUE MUST NEVER BE USED, AS THIS CAN CAUSE DISARM FAILURE.
Installation


1. Remove battery cover and disconnect ground cable from battery
terminal. Refer to 86.15.19.
2. Remove'B' post trim pa d. Refer to 76.13.08.
3. Remove seat belt upper anchor and seat belt guide. Refer to
76.73.10

4. Slacken and remove two nuts securing sensor unit to lower
section of 'B' post.

5. Lower sensor for access, disco nnect multiplug and remove
sensor.
1. Position sensor at base of 'B' post and connect harness
multiplug.
2. Lift sensor into position and fit and tighten securing bolts.
3. Fit seat belt guide and and seat belt upper anchor. Refer to
76.73.10.
4. Fit 'B' post trim pad. Refer to 76.13.08.
5. Connect ground cable to battery terminal and fit battery cover.
Refer to 86.15.15.

8. Remove generator front cooling duct.
Remove bolt.
Move duct rearwards to rele ase tang from undertray.
Release front duct from rear vertical duct.

9. Remove scrivets or screws se curing undertray to bumper
cover. Discard scrivets.

10. Remove and discard tiestrap securing undertray to body
brace.

11. At each side of vehicle, remo ve and discard scrivet securing undertray to wheelarch liner.
12. Remove undertray from vehicle.
13. Remove both front road wheels. Refer to Section 100-02.
14. Remove both front road springs. Refer to 60. 20.02.
15. Disconnect wheel speed sensor harness connectors.

1. Sever and discard tiestraps securing front wheel
speed sensor harness to upper wishbone.
2. Disconnect harness connector from sensor.
Repeat procedure to disconnect opposite side wheel speed
sensor harness.

16. CAUTION: Do not suspend caliper from brake hose as
this will damage the hose.
Remove brake calipers from carriers.
1. Remove caliper spring clip.
2. Remove guide pin dust caps.
3. Slacken and withdraw guide pins.
4. Remove caliper from carrier and tie to suspension mounting bracket.
Repeat procedure to remove opposite side front brake
caliper.

17. Remove filler cap from power steering fluid reservoir.

18. Disconnect steering rack transducer harness front connector.
Release harness connector from body retaining clip.
Disconnect connector.
19. Sever and discard tiestrap secu ring return pipe, harness (RHD
only) and rubber support to steering rack.

30. Connect steering harness.
Route harness connector to body front location.
Connect steering ha rness connector.
Install connector in body retaining clip.

31. Connect wheel speed sensor harness.
1. Connect wheel speed sensor harness to sensor.
2. Using new tiestraps secure wheel speed sensor harness to upper wishbone.
Repeat procedure to connect opposite side wheel speed
sensor.

32. Install brake calipers.
1. Install caliper on carrier.
2. Install guide pins.
3. Install guide pin dust caps.
4. Install caliper spring clip.
Repeat procedure to install opposite side front brake
caliper.
33. Install both front road sp rings. Refer to 60. 20.02.
34. Using screws or new scrivets , secure undertray to front
bumper cover.

12. Remove undertray from vehicle.
13. Remove both front road wheels. Refer to Section 204-04.
14. Remove both front road springs. Refer to 60. 20.02.

15. Disconnect wheel speed sensor harness connectors.
1. Sever and discard tiestr aps securing front wheel
speed sensor harness to upper wishbone.
2. Disconnect harness connector from sensor.
Repeat procedure to disconnect opposite side wheel speed
sensor harness.

16. CAUTION: Do not suspend caliper from brake hose as
this will damage the hose.
Remove brake calipers from carriers.
1. Remove caliper spring clip.
2. Remove guide pin dust caps.
3. Slacken and withdraw guide pins.
4. Remove caliper from carrier and tie to suspension mounting bracket.
Repeat procedure to remove opposite side front brake
caliper.
17. Remove filler cap from power steering fluid reservoir.

35. Connect wheel speed sensor harness.
1. Connect wheel speed sensor harness to sensor.
2. Using new tiestraps secure wheel speed sensor harness to upper wishbone.
Repeat procedure to connect opposite side wheel speed
sensor.

36. Install brake calipers.
1. Install caliper on carrier.
2. Install guide pins and tighten to 25-30Nm.
3. Install guide pin dust caps.
4. Install caliper spring clip.
Repeat procedure to install opposite side front brake
caliper.
37. Install both front road sp rings. Refer to 60. 20.02.

38. Using screws or new scrivets , secure undertray to front
bumper cover.
39. Using a new tiestrap, secure undertray to crossbeam front
brace.

9. Position spacer in the rece ss of each subframe bush.

10. Raise jack to locate subframe bushes on the body tapered
locations.

11. CAUTION: When installing su bframe bracket ensure that wheel speed sensor harness is clear.
Fit suspension subframe mounting-brackets.
1. Position bracket to subframe.
2. Install but do not ti ghten bush center bolt.
3. Install but do not tighten bolts securing bracket to body.
Following same procedure, install mounting bracket on
opposite side.
12. Tighten mounting bracket to body bolts to 80-100Nm.
Following same procedure, ti ghten mounting bracket bolts
on opposite side.