Land Rover Fuel Injection System Manual

7 6
RR2400E
KEYI. Spherical bearing
2. Retaining clips 
(2)3. Countershaft assembly
4. Overtravel spring
5. Throttle spindle nut
6. Throttle return spring 
(2)7. Tab washer
8. Throttle stop lever
9. Throttle bracket assembly
10. Pop rivets 
(2)Remove throttle lever assembly
17.
18.
19.
20.
66Remove the six screws securing the plenum
chamber to the ram housing. Lift off the
plenum chamber.
Remove the hose from the air bypass valve
housing and plenum chamber air inlet pipe.
Unclip the cruise control...

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,,,::FUEL INJECTIONSYSTEM
25. Remove the three bolts securing the throttle
bracket to the plenum chamber and withdraw
the bracket assembly.
26. Remove the tab washer and throttle stop lever
from the throttle valve shaft.
Inspect and overhaul throttle lever assembly31.
32.Pre-grease a new bush with 
Admax L3 or
Energrease LS3 assemble the bush into the
bearing retaining plates and pop-rivet the
assembly to the throttle bracket with two 4.7
mm 
(3116 in) diameter domed head rivets 9
mm (0.361 in)...

.’
,Inspect and overhaul throttle valve
36.
37.Examine the throttle valve shaft for excessive
wear between the bearing bushes in the
plenum chamber and the shaft. A small
amount 
ofclearanceis permissible. If
excessive wear is evident fit new shaft and
bushes as follows.
Remove the two split screws securing the
throttle valve disc and withdraw the disc,
taking care not to damage the shaft.
m
FIR24iIOEKQ I-38. Remove the shaft and air seal from the plenum
chamber.
RR2401E39. Using a suitable drift, drive...

FUEL INJECTION
SYSTEM
Assemble throttle levers and bracket
45.
46.
47.
40.
49.
50.
51.
52Fit the stop lever to the throttle valve shaft
followed by a new tab washer and secure with
the interconnecting nut.
Holding the stop lever on its stop, tighten the
interconnecting nut securely and bend over
the tabs of the tab washer to lock the nut in
position.
Fit the inboard throttle return spring noting
that the small hooked end of the spring is
nearest the plenum chamber.
Locate the hooked end of the inboard...

ELECTRONIC FUEL INJECTION-RELAYSELECTRONIC CONTROL UNIT (ECU)-14 CUIncorporated in the fuel injection electrical system
are two relays which are located beneath the front
right hand seat adjacent to the cruise control relay
and emission maintenance reminder. Access to the
relays is gained through the opening at the bottom
of the seat when the seat is in its fully forward
position on the seat slides.
1. Fuel pump relay (mounted on a blue terminal
block).2. Main relay (mounted on a black terminal
block).3....

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17
955EFUEL 
INFECTION - Circuit Diagram - 1990/91 modelvear1. 40 
-way connector to Electronic Control Unit
(ECU).
2. Lambda sensor (left side 
- bank A).3. Lambda sensor (right side 
- bank 8).4. By-pass air valve (stepper motor) (fast idle).
5. Lambda sensor screened ground.
6. Fuse C4 
- main fuse panel.
7. Inertia switch.
8. Fuel pump.
9. Ignition switch.
10. Speed transducer (road speed...

FUEL INJECTIONSYSTEM1990 KANCltROVER
ELECTRONIC FUEL INJECTION
-LUCAS 14CUX SYSTEM
1990 model year vehicles have an enhanced fuel
injection system, using a Lucas 14CUX electronic
control unit, The system is a development of the
14Cu sytem introduced on 3.9 litre vehicles.The systemworks in the same way, new
components being a tune select resistor and a fault
code display unit.TUNE SELECT RESISTOR 
- RR281 1M
Rd28llM
The 14CUX system is used in various markets, but acommon ECU is used. To suit individual...

Ki;;‘;ir 1990
FUEL INJECTION SYSTEM 119 1
.
TESTINGCONNECTIONS TO 40 WAY CONNECTOR
Release the ECU plug retaining clip and
remove the plug from the ECU. Access is
gained by removing the front seat base trim of
the right hand front seat.
Remove the plug shroud and manoeuver it
along the harness until there is enough
clearance to enable meter probes to be
inserted into the back of the plug.
There are six pin numbers 1, 13, 14, 27, 28
and 40 moulded onto the rear of the plug as
shown in the illustration...

‘.,
.‘....+
_:3: ‘.,,Tune select resistor test
lt is recommended that this test is carried outNOTE: This test is not required on vehicles after
before Test 1. of Continuity Test Procedure, SectionVIN No 451518, which are no longer fitted with a
19, page 44.tune select resistor.
FUNE SELECT RESISTOR TESTKEY 
1) Tune select resistor
Description of fault codes
The fault codes are listed in order of priority. Where
more than one fault exists, clearing the first fault
code will permit the next code to be...

FUEL INJECTION
SYSTEM
Code 40 - MISFIRE BANK A - left bank
Code 50 
- MISFIRE BANK B - right bank
If both fault codes are displayed check the
following components commom to both banks:
Distributor cap
Rotor arm
Coil
Electrical connections
Pick-up (air gap)
Amplifier
Injectors 
- if code 34 or 36 displayed.
If either fault code 40 or 50 is displayed check
components applicable to the particular bank that
the misfire has 
occured on:
.Spark plugs
HT leads
Distributor cap
Injectors 
- if code 34 bank A or...