1988 OPEL CALIBRA diagram

Wiring diagrams 12•73
12
Wiring diagram for 1992-on models (continued)

models so equipped). On 14 NV, 16 SV and
18 SV models, the ignition amplifier module is
mounted on the coil’s bracket or baseplate
(see illustration).
2Disconnect the battery negative lead.
3Carefully note the LT wiring connections
before disconnecting them (see illustration).
4Note that on models with power steering,
one of the coil securing bolts also secures the
power steering fluid reservoir bracket.
5Remove the coil.
6On models with a cylindrical type coil, the
mounting clamp can be removed from the coil
by loosening the clamp nut.
Testing
7To test the coil, first disconnect the LT
wiring and the HT lead. Test the coil’s primary
windings by connecting a multi-meter across
the LT terminals (“+” or “15” and “-” or “1”).Then the secondary windings by testing
across the HT terminal (“4”) and one of the LT
terminals (usually the “-/1” terminal, although
in some cases, either terminal may serve). On
20 XEJ models, results should closely
approximate the specified values. On all other
models, typical primary resistances are less
than 1 ohm, while secondary resistances can
be expected to be in the 4000 to 12 000 ohms
range.
8If the results obtained differ significantly
from those given, showing windings that are
shorted or open circuit, the coil must be
renewed.
Refitting
9Refitting is a reversal of removal, however
ensure correct connections. Usually they are
physically different to prevent incorrect
refitting. If not, use the terminal marks ornumbers in conjunction with the relevant
wiring diagram at the back of this manual to
ensure that the connections are correctly
remade. If the connections are reversed, so
will the coil’s polarity be. While the engine
may still run, spark plug life will be reduced
and poor starting and/or misfiring may follow.
10Where applicable, ensure that the coil
suppresser is in position before refitting the
coil securing bolts.
17Distributor cap and rotor
arm -removal and refitting
3
Note: Refer to Section 3 before proceeding
Removal
14 NV and 16 SV models
1Disconnect the battery negative lead.
2Identify each HT lead for position, so that
the leads can be refitted to their correct
cylinders, then disconnect the leads from the
spark plugs by pulling on the connectors, not
the leads. Similarly, disconnect the HT lead
from the coil. Pull the leads from the clips on
the camshaft cover.
3On the Bosch distributor, prise away the
two spring clips with a screwdriver, and lift off
the distributor cap. On the Lucas distributor,
unscrew the two small bolts and lift off the
cap (see illustrations).
4The rotor arm is a push fit on the end of the
distributor shaft.
5If needed, on the Bosch distributor, the
plastic shield can be pulled from the end of
the distributor, to allow examination of the
distributor components (see illustration).
Other models, where applicable
6Proceed as described in paragraphs 1 and 2.
7On DOHC models (except X20 XEV),
unscrew the two securing bolts and withdraw
the spark plug cover from the camshaft cover.
8Using a Torx socket, unscrew the three
captive securing screws and withdraw the
distributor cap (see illustration).
9Withdraw the plastic shield from the rotor
arm housing. The shield is fitted in the
housing, with an O-ring seal located in a
groove in its periphery. Ease out the shield,
taking care not to damage the rotor arm (see
illustration).
5•10Engine electrical systems
16.1 Ignition coil - 1.6 litre models - note
ignition timing basic adjustment coding
plug (arrowed)
17.3A Removing the distributor cap -
1.6 litre model (Bosch distributor) . . .
17.9 Removing the plastic shield from the
rotor arm housing - 2.0 litre model17.8 Unscrewing a distributor cap
securing screw - 2.0 litre model17.5 Removing the rotor arm and plastic
shield - 1.6 litre model (Bosch distributor)
17.3B . . .and 1.6 litre models (Lucas
distributor)
16.3 Disconnecting the coil LT wiring plug
- 2.0 litre model

REF•24Glossary of Technical Terms
automatic transmission, a switch that
prevents starting if the vehicle is not in Neutral
or Park.
StrutSee MacPherson strut.
TTappetA cylindrical component which
transmits motion from the cam to the valve
stem, either directly or via a pushrod and
rocker arm. Also called a cam follower.
ThermostatA heat-controlled valve that
regulates the flow of coolant between the
cylinder block and the radiator, so maintaining
optimum engine operating temperature. A
thermostat is also used in some air cleaners in
which the temperature is regulated.
Thrust bearingThe bearing in the clutch
assembly that is moved in to the release levers
by clutch pedal action to disengage the
clutch. Also referred to as a release bearing.
Timing beltA toothed belt which drives the
camshaft. Serious engine damage may result
if it breaks in service.
Timing chainA chain which drives the
camshaft.
Toe-inThe amount the front wheels are
closer together at the front than at the rear. On
rear wheel drive vehicles, a slight amount of
toe-in is usually specified to keep the front
wheels running parallel on the road by
offsetting other forces that tend to spread the
wheels apart.
Toe-outThe amount the front wheels are
closer together at the rear than at the front. Onfront wheel drive vehicles, a slight amount of
toe-out is usually specified.
ToolsFor full information on choosing and
using tools, refer to the Haynes Automotive
Tools Manual.
TracerA stripe of a second colour applied to
a wire insulator to distinguish that wire from
another one with the same colour insulator.
Tune-upA process of accurate and careful
adjustments and parts replacement to obtain
the best possible engine performance.
TurbochargerA centrifugal device, driven by
exhaust gases, that pressurises the intake air.
Normally used to increase the power output
from a given engine displacement, but can
also be used primarily to reduce exhaust
emissions (as on VW’s “Umwelt” Diesel
engine).
UUniversal joint or U-jointA double-pivoted
connection for transmitting power from a
driving to a driven shaft through an angle. A U-
joint consists of two Y-shaped yokes and a
cross-shaped member called the spider.
VValveA device through which the flow of
liquid, gas, vacuum, or loose material in bulk
may be started, stopped, or regulated by a
movable part that opens, shuts, or partiallyobstructs one or more ports or passageways.
A valve is also the movable part of such a
device.
Valve clearanceThe clearance between the
valve tip (the end of the valve stem) and the
rocker arm or tappet. The valve clearance is
measured when the valve is closed.
Vernier caliperA precision measuring
instrument that measures inside and outside
dimensions. Not quite as accurate as a
micrometer, but more convenient.
ViscosityThe thickness of a liquid or its
resistance to flow.
VoltA unit for expressing electrical “pressure”
in a circuit. One volt that will produce a current
of one ampere through a resistance of one
ohm.
WWeldingVarious processes used to join metal
items by heating the areas to be joined to a
molten state and fusing them together. For
more information refer to the Haynes
Automotive Welding Manual.
Wiring diagramA drawing portraying the
components and wires in a vehicle’s electrical
system, using standardised symbols. For
more information refer to the Haynes
Automotive Electrical and Electronic Systems
Manual.

Pierburg 2E3 carburettor- 4A•5
Piston rings- 2A•30
Piston/connecting rod- 2A•29
Plastic components- 11•3
Potentiometer- 4B•12, 4B•16
Power steering fluid - 0•14, 0•17, 1•2, 1•12
Power steering pump- 10•22
Power steering system bleeding- 10•22
Punctures- 0•8
RRadiator- 3•3
Radiator cooling fan- 3•5
Radiator grille- 11•12
Radio/cassette anti theft system- REF•5
Radio/cassette player- 12•18
Rear hub- 10•10, 10•15
Rear lamps- 12•11
Rear suspension assembly- 10•15
Relays- 12•3
Release bearing (clutch)- 6•6
Repair procedures- REF •4
Respraying- 11•2
Reversing lamp switch- 7A•6
Road test- 1•13
Roll bars- 10•8, 10•13, 10•17
Routine maintenance - 1•1 et seq
SSafety first!- 0•5
Scratches- 11•2
Seat belts- 11•21
Seats- 11•20, 11•22
Seats heated- 12•6
Selector cable (automatics)- 7B•4
Selector lever- 7B•4
Sender unit fuel level- 4A•4, 4B•8
Sender units (temperature gauge)- 3•6
Servicing - see Routine maintenance
Servo unit (braking system)- 9•15
Shock absorber- 10•11
Shoes (brake)- 9•6
Short-circuit finding- 12•2
Spark plugs- 1•3, 1•14, 1•16
Speakers- 12•17
Speedometer cable- 12•18
Speedometer drive- 7A•6
Starter inhibitor switch- 7B•3
Starter motor- 5•8
Starting problems- 0•6
Steering wheel alignment- 10•1, 10•24
Steering- 10•1 et seq
camber - 10•1 10•24
castor - 10•1, 10•24
column - 10•18
damper - 10•21
fault diagnosis - REF•12, REF•17gear - 10•21
power steering system bleeding - 10•22
power steering fluid - 0•17, 1•2
power steering pump - 10•22
shaft rubber coupling - 10•18
tie-rod end - 10•23
toe setting - 10•1, 10•24
wheel - 10•17
wheel bearing - 10•4, 10•9, 10•14
wheel with airbag - 12•20
Stub axle- 10•13
Subframe- 10•5
Sump- 2A•27, 2B•9
Sunroof- 11•13
Sunroof motor- 12•18
Sunroof switch- 12•5
Suspension- 10•1 et seq
anti-roll bars - 10•8, 10•13, 10•17
assembly (rear) - 10•15
coil spring (rear) - 10•12, 10•15
fault diagnosis - REF•12, REF•17
level control system - 10•14
lower arm (front) - 10•7
rear hub - 10•10, 10•15
shock absorber - 10•11
strut (front) - 10•6
stub axle - 10•13
sub frame - 10•5
trailing arms - 10•12, 10•16
wheel bearing - 10•4, 10•9, 10•14
Suspension/steering checks- 1•10
Switches:
brake lamp - 12•5
cooling fan - 3•6
courtesy lamp - 12•5
electric door mirror - 12•5
handbrake warning lamp - 12•5
hazard warning - 12•4
heater blower motor - 12•4
ignition - 12•3
indicator - 12•4
kickdown - 7B•3
lights - 12•4
luggage compartment - 12•5
oil pressure warning lamp - 12•5
push button - 12•4
reversing lamp - 7A•6
starter inhibitor - 7B•3
sunroof - 12•5
TTailgate- 11•5
Temperature gauge sender- 3•6
Temperature sensor (automatics)- 7B•5
Thermostat- 3•4
Throttle cable- 4A•5, 4B•9
Throttle pedal- 4A•5Tie-rod end- 10•23
Timing- 5•2, 5•13
Timing belt- 1•16, 2A•13, 2B•3, 2B•6
Toe setting- 10•1, 10•24
Tools and working facilities- REF•4, REF•6,
REF•7
Towing- 0•9
Trim panel (door)- 11•6
Tyre checks- 0•16, 0•17
Tyre pressures- 0•17
UUnderbody- 11•1
Underbody views- 1•7
Underbonnet views- 0•10, 1•5
Upholstery and carpets- 11•2
VVacuum servo unit (braking system)- 9•15
Valve lifters- 2A•24, 2B•9
Valves- 2A•5, 2B•2
Vehicle identification numbers- REF•3
Ventilation system- 3•1 et seq
Vents- 3•8
WWasher fluid- 0•13, 1•2
Washers- 12•13, 12•15
Water pump- 3•4
Weekly checks- 0•10et seq
Wheelalignment- 10•1, 10•24
Wheel arch liners- 11•12
Wheel bearing- 10•4, 10•9, 10•14
Wheel changing- 0•8
Wheel cylinder- 9•11
Window glass- 11•9
Window regulator- 11•10
Windscreen- 11•9, 11•12
Wiper blades- 0•15, 12•13
Wiper motors- 12•14
Wiring diagrams- 12•22 et seq
Index REF•27
REF