1995 LAND ROVER DISCOVERY ECU

75SUPPLEMENTARY RESTRAINT SYSTEM
2
REPAIR
5.Disconnect airbag harness connector from
yellow airbag column harness.6.Use special socket, unscrew 2 tamper-proof
Resistorx screws securing airbag module to
steering wheel.
7.Release airbag module from steering wheel.
CAUTION: Do not allow the airbag module
to hang by the airbag harness.

SUPPLEMENTARY RESTRAINT SYSTEM
3
REPAIR
8.Disconnect harness connector from airbag
module.
9.Remove airbag module.
CAUTION: Store the airbag module in
accordance with the storage procedures
outlined in Description and Operation.
NOTE: If airbag module is to be replaced
the serial numbers must be recorded in
the vehicle service record.
Refit
10.Reverse removal procedure.
11.Connect harness connector to airbag module
with harness downwards (as shown at 8).
12.Position airbag module on steering wheel and
engage retained screws. Use special socket to
tighten screws to
8Nm (6 lbf ft).
CAUTION: Take care not to cross thread
screws.
13.Check Supplementary Restraint System using
Testbook.STEERING WHEEL
Service repair no - 57.60.01
Remove
1.Remove driver's airbag module.
See driver's
airbag module.
2.Position steering wheel so the road wheels are
in the straight ahead position.
3.Disconnect cruise control switch connector
(where fitted) from rotary coupler harness.
4.Release harnesses from clip on steering wheel.
5.Remove steering wheel nut.
6.Release steering wheel from column.
7.Feed harnesses through hole in steering wheel.
8.Remove steering wheel.
CAUTION: Prevent rotation of rotary
coupler once steering wheel is removed.
Secure in position with adhesive tape.

SUPPLEMENTARY RESTRAINT SYSTEM
5
REPAIR
5.Remove 3 screws securing lower half of nacelle
to steering column.
6.Separate the 2 halves of the nacelle and remove
from steering column.
7.Release airbag harness connector from bracket
and disconnect.
8.Disconnect rotary coupler connector from
steering column harness.
9.Release 2 clips securing rotary coupler to
column switch assembly.
10.Remove rotary coupler from column switch
assembly.

75SUPPLEMENTARY 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
8Nm
(6 lbf ft).
CAUTION: Take care not to cross thread
screws.
10.Check Supplementary Restraint System using
Testbook.

75SUPPLEMENTARY 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, centre
console.
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.

75SUPPLEMENTARY RESTRAINT SYSTEM
12
REPAIR SRS WARNING LIGHT BULBS
Service repair no - 76.73.74
Remove
1.Remove instrument binnacle.
See
ELECTRICAL, Repair, instrument binnacle.
2.Remove window and face plate from instrument
panel.
3.Remove 3 screws securing ECU to instrument
panel.
4.Release and remove small cover from ECU.
5.Disconnect multiplug from ECU.
6.Remove ECU
7.Remove 4 screws securing tachometer.
8.Remove tachometer.