Discovery (1995+): Body Repair Manual — part 12
75
SUPPLEMENTARY RESTRAINT SYSTEM
8
REPAIR
3. Remove 3 screws securing lower half of nacelle
to steering column.
4. Separate the halves of the nacelle and remove
from steering column.
5. Release 2 clips securing rotary coupler to
column switch assembly.
6. Release rotary coupler.
CAUTION: Do not allow rotary coupler to
hang on its harness.
7. Disconnect 4 connectors from column switch
assembly.
8. Remove column switch assembly from steering
column.
Refit
9. Reverse removal procedure.
SUPPLEMENTARY RESTRAINT SYSTEM
9
REPAIR
PASSENGER’S AIRBAG MODULE
Service repair no - 76.74.02
WARNING: All the airbag system
components, including the wiring harness,
MUST be renewed after the airbags have
deployed.
Remove
1. Switch off ignition.
2. Disconnect battery negative lead and then
positive lead.
3. Open glovebox and disconnect harness
connector from airbag module.
4. Use special socket and long extension, remove
2 torx head screws securing front of airbag
module to fascia panel.
5. Use special socket, remove 2 torx head screws
securing rear of airbag module to fascia panel.
6. Release airbag module from fascia panel.
CAUTION: Do not allow the airbag module
to hang by the airbag harness.
7. Carefully and without pulling on connector
remove airbag module.
CAUTION: Store the airbag module in
accordance with the storage procedures
described in Description and Operation.
NOTE: If airbag module is to be replaced
the serial number must be recorded in the
vehicle service record.
Refit
8. Reverse removal procedure.
9. Tighten airbag module securing screws to
8 Nm
(6 lbf ft).
CAUTION: Take care not to cross thread
screws.
10. Check Supplementary Restraint System using
Testbook.
75
SUPPLEMENTARY RESTRAINT SYSTEM
10
REPAIR
CRASH SENSOR - DISTRIBUTED SRS
Service repair no - 76.74.04
Remove
1. Disconnect battery negative lead.
2. LH sensor only: Slacken power steering
reservoir clamp and lift reservoir to provide
access.
Diesel model only: Remove jack and mounting
bracket.
3. Disconnect multiplug from sensor
CAUTION: Ensure airbag harness
connector seal and anti-backout DO NOT
come adrift when disconnecting sensor.
4. Use special socket, remove 2 screws securing
crash sensor to body.
5. Remove crash sensor.
Refit
6. Reverse removal procedure.
7. Tighten crash sensor securing screws to
10 Nm
(7 lbf ft). Ensure multiplug is fully engaged on
sensor and retained by its latch.
8. Check Supplementary Restraint System using
Testbook.
SUPPLEMENTARY RESTRAINT SYSTEM
11
REPAIR
AIRBAG DIAGNOSTIC CONTROL UNIT -
DISTRIBUTED SRS
Service repair no - 76.74.03
Remove
1. Disconnect battery negative lead.
2. Remove centre console assembly.
See
CHASSIS AND BODY, Repair.
3. Remove 4 screws and release the 2 rear
passenger air ducts from their fitted position and
remove centre console mounting bracket.
4. Use flat ended screwdriver and release
YELLOW retainer, pull retainer 30mm (1 1/8 in)
from multiplug and disconnect airbag harness
multiplug from airbag control unit.
5. Use special socket, remove 2 screws securing
airbag control unit to body bracket.
6. Remove airbag diagnostic control unit.
Refit
7. Reverse removal procedure.
8. Tighten control unit securing screws to
10Nm (7
lbf ft).
9. Check Supplementary Restraint System using
Testbook.
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