Defender 90 NAS. Manual — part 23
19
FUEL SYSTEM
4
REPAIR
CAMSHAFT POSITION (CMP) SENSOR
Service repair no - 18.30.24
Remove
1. Disconnect battery negative lead.
2. Release sensor multiplug from clip and
disconnect multiplug.
3. Remove bolt securing sensor to front cover.
4. Remove sensor.
5. Remove and discard ’O’ ring.
Refit
6. Clean sensor and mating face on front cover.
7. Lubricate and fit ’O’ ring to sensor.
8. Fit sensor, fit bolt and tighten to
8 Nm, 6lbf ft.
9. Connect sensor multiplug and secure to bracket.
10. Reconnect battery negative lead.
KNOCK SENSOR - LH
Service repair no - 18.30.28
CAUTION: Due to the sensitivity of the
sensor, do not apply tape or sealant to
sensor threads.
Remove
1. Raise vehicle on ramp [hoist].
2. Depress spring clip and disconnect multiplug
from LH knock sensor.
3. Remove sensor from engine.
Refit
4. Clean mating faces of sensor and engine.
5. Fit sensor and tighten to
16 Nm, 22 lbf ft.
CAUTION: Failure to tighten sensor to
correct torque will result in malfunction or
sensor damage.
6. Connect multiplug to sensor.
7. Lower vehicle.
SFI
5
REPAIR
KNOCK SENSOR - RH
Service repair no - 18.30.30
CAUTION: Due to the sensitivity of the
sensor, do not apply tape or sealant to
sensor threads.
Remove
1. Raise vehicle on ramp [hoist].
2. Remove bolt securing starter motor heat shield
to engine RH mounting.
3. Release heat shield clip from starter solenoid.
4. Move heat shield aside to gain access to knock
sensor.
5. Depress spring clip and disconnect sensor
multiplug.
6. Remove sensor.
Refit
7. Clean sensor and mating face.
8. Fit sensor and tighten to
16 Nm, 12 lbf ft.
CAUTION: Failure to tighten sensor to
correct torque will result in malfunction or
sensor damage.
9. Connect multiplug to sensor.
10. Manoeuvre heat shield into position.
11. Secure heat shield clip to solenoid.
12. Align heat shield to mounting and secure with
bolt.
13. Lower vehicle.
19
FUEL SYSTEM
6
REPAIR
INERTIA FUEL SHUT OFF SWITCH
Service repair no - 19.22.09
Remove
1. Disconnect battery negative lead.
2. Disconnect multiplug from inertia fuel shut off
switch.
3. Remove 2 screws securing shut off switch to
mounting bracket.
4. Remove shut off switch.
Refit
5. Position fuel shut off switch to mounting bracket
and secure with screws.
6. Connect multiplug to inertia switch.
7. Reconnect battery negative lead.
RELAY MODULE
Service repair no - 18.30.71
Remove
1. Remove 2 screws securing ECM cover.
2. Remove cover.
3. Remove 2 screws securing ECM.
4. Release ECM from 2 lower retainers and move
aside for access to relay module.
5. Release relay module from bracket.
6. Disconnect 2 multiplugs from module.
7. Remove relay module.
SFI
7
REPAIR
Refit
8. Position relay module
9. Connect multiplugs and secure module to
bracket.
10. Position ECM and secure to lower retainers.
11. Fit and tighten screws securing ECM.
12. Fit cover and tighten screws.
AIR CLEANER
Service repair no - 19.10.01
Remove
1. Loosen clip securing intake hose to MAF sensor
and disconnect hose.
2. Disconnect multiplug from IAT sensor.
3. Release 2 toggle clips and release MAF sensor
from air cleaner.
4. Remove ’O’ ring and carefully place sensor
aside.
5. Remove 3 nuts securing air cleaner to mounting
rubbers.
6. Remove air cleaner assembly.
Do not carry out further dismantling if component
is removed for access only.
7. Remove IAT sensor.
Refit
8. Clean threads of IAT sensor and fit sensor to air
cleaner.
9. Position air cleaner to mountings and fit and
tighten nuts.
10. Clean MAF sensor and mating face.
11. Fit NEW ’O’ ring, fit sensor and secure toggle
clips.
12. Connect multiplug to IAT sensor.
13. Connect air intake hose and tighten clip.
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