Land Rover Rover 214 Repair 1689 05b Rover Manual

							1689 Rover 214 & 414 Updated Version 09/97
5B
Chapter 5 Part B 
Ignition system - fuel injection engines
Crankshaft sensor and reluctor ring - removal and refitting  . . . . . . . 6
Distributor - removal and refitting  . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Engine management electronic control unit (ECU) - removal and 
refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General information and precautions  . . . . . . . . . . . . . . . . . . . . . . . . 1HT coil - removal, testing and refitting  . . . . . . . . . . . . . . . . . . . . . . . 4
HT leads, distributor cap and rotor arm - inspection and renewal  . . 3
Ignition system - testing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Ignition timing - checking and adjustment  . . . . . . . . . . . . . . . . . . . . 8
Spark plugs - renewal  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5B•1
Contents
Specifications
General
System types  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rover/Motorola Modular Engine Management System (MEMS), fully
electronic, controlled by ECU. Either single-point (SPi) or multi-point
(MPi) fuel injection.
Firing order  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-4-2 (No 1 cylinder at timing belt end)
Direction of crankshaft rotation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clockwise (viewed from right-hand side of vehicle)
Distributor
Type  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spark distribution only (ignition timing controlled by ECU)
Direction of rotor arm rotation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti-clockwise (viewed from left-hand side of vehicle)
Distributor cap:
SPi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AUU 1186
MPi  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NJD 10010
Rotor arm  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AUU 1641 (resistive type)
Engine management Electronic Control Unit (ECU)
SPi:
With catalytic converter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MNE 10008, MNE 10023 or MNE 10042
Without catalytic converter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MNE 10011, MNE 10013 or MNE 10051
MPi:
Alloy inlet manifold  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MNE 101470
Plastic inlet manifold  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MKC 101730
Ignition timing @ idle speed (ECU-controlled)
SPi with catalytic converter - by ECU number (vacuum pipe connected) :
MNE 10008  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13º ± 2º BTDC
MNE 10023, MNE 10042  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14º ± 2º BTDC
SPi without catalytic converter - by ECU number (vacuum pipe connected) :
MNE 10011  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 ± 2º BTDC
MNE 10013, MNE 10051  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 ± 2º BTDC
MPi - by ECU number (vacuum pipe connected) :
MNE 101470, MKC 101730  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 ± 5º BTDC
Note:Nominal value given for checking purposes only - not adjustable and may vary under ECU control
Easy,suitable for
novice with little
experienceFairly easy,suitable
for beginner with
some experienceFairly difficult,
suitable for competent
DIY mechanic
Difficult,suitable for
experienced  DIY
mechanicVery difficult,
suitable for expert DIY
or  professional
Degrees of difficulty
54321 
						

							1 General information and
precautions
General information
The ignition system is fully electronic in
operation, incorporating an Electronic Control
Unit (mounted on the engine compartment
bulkhead), a distributor (driven off the inlet
camshaft left-hand end) and a crankshaft
sensor (mounted in the left-hand rear end of
the engine cylinder block/crankcase) which
registers with the reluctor ring fixed to the
flywheel. The system also incorporates spark
plugs, HT leads, an ignition HT coil and
associated wiring.
The system is divided into two circuits,
which are the primary (low tension/LT) and
secondary (high tension/HT) circuits. The
primary circuit consists of the battery, ignition
switch, ignition HT coil primary windings, ECU
and wiring. The secondary circuit consists of
the ignition HT coil secondary windings, the
distributor cap and rotor arm, the spark plugs
and the interconnecting HT leads.
The ECU controls both the ignition system
and the fuel injection system, integrating the
two in a complete engine management
system. Refer to Chapter 4 for information on
any part of the system not given in this
Chapter.
As far as the ignition system is concerned,
the ECU receives information in the form of
electrical impulses or signals from the
crankshaft sensor (which gives it the engine
speed and crankshaft position), from the
coolant temperature sensor (which gives it the
engine temperature), from the throttle pedal
switch (which tells it when the throttle isclosed) and from the manifold absolute
pressure sensor (which gives it the load on the
engine). All these signals are compared by the
ECU, using digital techniques, with set values
pre-programmed (mapped) into its memory.
Based on this information, the ECU selects
the ignition timing appropriate to those values
and controls the ignition HT coil accordingly.
This means that the distributor is just that, a
distributor of the HT pulse to the appropriate
spark plug. It has no effect whatsoever on the
ignition timing. Also, the system is so sensitive
that, at idle speed, the ignition timing may be
constantly changing. This should be
remembered if trying to check the ignition
timing.
Precautions
Refer to Part A of this Chapter.
2 Spark plugs- renewal
Refer to Chapter 1.
3 HT leads, distributor cap and
rotor arm- inspection and
renewal 
1Refer to Chapter 1. Note the anti-flash
shield fitted beneath the rotor arm.
4 HT coil- removal, 
testing and refitting
1Refer to Section 4 in Part A of this Chapter.
5 Distributor- 
removal and refitting
3
Removal
1Disconnect the battery negative terminal.
2Disconnect the HT leads from the spark
plugs.
3Undo the two distributor cap retaining screws
and remove the cap and leads as an assembly.
4Slacken and remove the grub screw
securing the rotor arm to the camshaft end
then pull off the rotor arm (see illustration).
5Remove the distributor cap insulating plate
from the cylinder head.
6Examine each components for signs of
wear or damage and renew as necessary.
Refitting
7Refitting is a reverse of the removal
procedure. Tighten the rotor arm grub screw
and distributor cap screws to the specified
torque settings.
Crankshaft sensor
Type  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADU 7340
HT coil
Type:
SPi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NEC 10002 or NEC 10003
MPi  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NEC 10002, NEC 10003 or NEC 10004
Manufacturer  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bosch, Ducellier or Rudi Cajavec
Current consumption - average  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 to 0.75 amps @ idle speed
Winding resistances:
Primary:
Spi  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to 0.5 ohms @ 20ºC
Mpi  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7 to 0.8 ohms @ 20ºC
Secondary  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 to 15 K ohms @ 20ºC
Torque wrench settingsNm lbf ft
Spark plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 18
Distributor cap screws  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1
Distributor rotor arm grub screw  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7
Reluctor ring to flywheel setscrews  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2
Ignition HT coil mounting screws  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5
Crankshaft sensor mounting screws  . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4
Crankshaft sensor lead-to-flywheel cover plate screw  . . . . . . . . . . . . . 6 4
5B•2 Ignition system – fuel injection engines
5.4  Distributor assembly
1 Distributor cap 3 Grub screw
2 Rotor arm 4 Insulating plate
1689 Rover 214 & 414 Updated Version 09/97 
						

							6 Crankshaft sensor and
reluctor ring- removal and
refitting
3
Removal
Crankshaft sensor
1Disconnect the battery negative terminal.
2Disconnect the sensor wiring at its
connector plug on the flywheel rear cover
plate, then undo the retaining screw to release
the wiring lead.
3Remove the two retaining screws and
withdraw the sensor from the cylinder
block/crankcase (see illustration).
4Inspect the sensor for obvious signs of wear
or damage and renew it if necessary. No data
is available to enable the sensor to be tested. If
thought to be faulty, it can be checked only by
substitution with a new component.
Reluctor ring
5Remove the flywheel.
6Undo the two screws securing the reluctor
ring to the rear of the flywheel and withdraw it
(see illustration).7Check the ring for obvious signs of wear or
damage and renew it if necessary.
Refitting
Crankshaft sensor
8Ensure that the sensor and cylinder
block/crankcase mating surfaces are clean
then refit the sensor and tighten its retaining
screws to the specified torque.
9Connect the sensor wiring connector and
tighten the connector mounting screw to the
specified torque.
10Reconnect the battery negative terminal.
Reluctor ring
11Refitting is a reversal of the removal
procedure. Tighten the reluctor retaining
screws to the specified torque.
7 Engine management
electronic control unit (ECU)
- removal and refitting
Refer to Chapter 4.
8 Ignition timing- 
checking and adjustment
Refer to Chapter 1.
9 Ignition system- testing
5
1If a fault appears in the engine management
(ignition/fuel) system, first ensure that the fault
is not due to poor maintenance. Check that
the air cleaner filter element is clean, the spark
plugs are in good condition and correctly
gapped, and that the engine breather hoses
are clear and undamaged. Also check that the
accelerator cable is correctly adjusted. If the
engine is running very roughly, check the
compression pressures, bearing in mind that
possibly one of the hydraulic tappets might be
faulty, producing an incorrect valve clearance.
2If these checks fail to reveal the cause of
the problem, the vehicle should be taken to a
suitably-equipped Rover dealer for testing. A
wiring block connector is incorporated in the
engine management circuit into which a
special electronic diagnostic tester can be
plugged. The tester will locate the fault quickly
and simply, alleviating the need to test all the
system components individually, which is a
time-consuming operation that carries a high
risk of damaging the ECU.
3The only ignition system checks which can
be carried out by the home mechanic are
those described for the spark plugs, HT leads,
rotor arm and distributor cap (Chapter 1), and
the ignition HT coil (this Chapter). If
necessary, the system wiring and wiring
connectors can be checked as described in
Chapter 12, ensuring that the ECU wiring
connectors have first been disconnected.
Ignition system – fuel injection engines  5B•3
6.3  Removing crankshaft sensor (wiring
lead screw arrowed)6.6  Reluctor ring-to-flywheel screws
(arrowed)
5B
1689 Rover 214 & 414 Updated Version 09/97