VW MKII A2 MK2 Golf Jetta Fox Service Manual - VAGLinks.com

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5B•2 Ignition system - transistorised type 1 General information and precautions General information TCI-H system The transistorised (TIC-H) ignition system functions in a similar manner to that described in Part A of this Chapter for the contact breaker system, with the following exceptions. An electronic sender unit replaces the contact points and condenser in the distributor and a remotely-mounted electronic switch unit controls the coil primary circuit (see illustrations). Ignition timing is advanced and retarded automatically, to ensure that the spark occurs at just the right instant for the particular load at the prevailing engine speed. Ignition advance is controlled both mechanically and by a vacuum-operated system. The mechanical governor mechanism comprises two weights, which move out from the distributor shaft as the engine speed rises due to centrifugal force. As they move outwards they rotate the cam relative to the 1 Connector 2 Spark plug 3 HT lead 4 Suppression connector 5 Ignition coil distributor shaft, and so advance the spark. The weights are held in position by two light springs, and it is the tension of the springs which is largely responsible for correct spark advancement. Vacuum control comprises a diaphragm, one side of which is connected via a small bore pipe to the inlet manifold, and the other side to the distributor baseplate. Depression in the inlet manifold, which varies with engine speed and throttle opening, causes the diaphragm to move, so moving the baseplate, and advancing or retarding the spark. A fine degree of control is achieved by a spring in the vacuum assembly. Digifant system Fitted to the 1.8 litre (code PB and PF) engine, the Digifant ignition system uses the TCI-H system described above but in addition, incorporates a knock sensor which senses the onset of pre-ignition and retards ignition timing accordingly. Normal ignition timing is automatically adjusted by the Digifant control unit which also controls the fuel injection system. Because of this, there are no centrifugal advance weights in the distributor (see illustration). 1.1a Transistorised ignition system components – 1.05 and 1.3 litre engines 6 Terminal (–) 7 Terminal 15 (+) 8 Terminal 4 9 Connectors 10 TCI-H switch unit 11 Connector 12 Heat sink 13 O-ring 14 Distributor 15 Hall sender 1081 VW Golf & Jetta 16 Screw 17 Vacuum unit 18 Bearing plate 19 Dust cover 20 Rotor arm Work procedures are basically as given for the TIC-H system , except for those described in the relevant Sections. Precautions In addition to the precautions listed in Part A of this Chapter, note the following: a) When turning the engine at starter speed without starting, the HT lead must be pulled from the centre of the distributor cap and kept earthed to a suitable part of the engine or bodywork b) If the system develops a fault and it is necessary to tow the vehicle with the ignition on, the wiring must be disconnected from the TCI-H switch unit c) Do not under any circumstances connect a condenser to the coil terminals 2 Spark plugs - renewal Refer to Chapter 1, Section 15 21 Carbon brush with spring 22 Distributor cap 23 Screening ring 24 Earth lead 2
Ignition system - transistorised type 5B•3 1.1b Transistorised ignition system components – 1.6 litre engine 1081 VW Golf & Jetta The system for 1.8 litre engines is similar 1.5 Digifant ignition system components 1 TCI-H switch unit 2 Connector 3 Plate 4 Nut 5 Connector 6 Digifant control unit 7 Temperature sender 8 Knock sensor 9 Bolt 10 Throttle valve switch 1 5B
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Chapter 1 Routine maintenance and s
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CO content (%) 1.05 litre carburett
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The maintenance intervals in this M
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Maintenance - component location 1
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Maintenance - component location 1
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6 Fluid leakage and engine electric
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9 The engine will turn over more ea
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13 Wipe clean the distributor cap a
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18.13 Using a chain wrench to unscr
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25.3a Bend each brake hose to check
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32.4b . . . loosen front mounting n
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Chapter 2 Part A: Engine repair pro
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1.3 litre: Inlet opens . . . . . .
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difficulty is experienced, it may b
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9 Cylinder head - removal 3 1 If th
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11 Cylinder head - dismantling and
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14.13a Withdrawing crankshaft rear
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21 Crankshaft and bearings - examin
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29.2 Fitting centre main bearing sh
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35.9 Camshaft sprocket (later type)
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Chapter 2 Part B: Engine repair pro
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4.5 Two lengths of metal used to lo
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9 Oil pump - refitting 3 Refitting
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guide the cylinder head into positi
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Chapter 2 Part C: Engine repair pro
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Stem diameter: Inlet . . . . . . .
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1 General information The 1.6 and 1
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26 The engine/gearbox unit is now r
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9.6 Intermediate sprocket timing ma
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and tappet is required. Label the c
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13.1 Sump, oil pump and oil filter
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17 Oil filter - renewal Refer to Ch
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30.3a Fitting flanged type centre m
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etween the camshaft and intermediat
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Chapter 2 Part D: Engine repair pro
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1 General information The 1.8 litre
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Chapter 3 Cooling, heating and air
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1 Radiator 2 Fan ring 3 Expansion t
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2.2 Removing expansion tank cap 2.4
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Refitting 8 Refitting is a reversal
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8.3a Pulling free heater/ventilatio
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11 Air conditioning system compress
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Chapter 4 Part A: Fuel and exhaust
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Carburettor-1.6 litre Pierburg/Sole
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3.6 Air cleaner components - 1.6 an
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6.1 Fuel reservoir location - 1.3 l
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etaining clip and then disconnect t
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Fuel and exhaust systems - carburet
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Fuel and exhaust systems - carburet
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15.10 Idle speed (A) and mixture (B
Page 101 and 102: 15.53 Checking choke valve gap (wid
Page 103 and 104: 17.10 Accelerator pump check prepar
Page 105 and 106: 18.3a Unscrew the bolts . . . 18.3b
Page 107 and 108: Fuel and exhaust systems - carburet
Page 109 and 110: Chapter 4 Part B: Fuel and exhaust
Page 111 and 112: Fuel supply The fuel pump operates
Page 113 and 114: 4 Switch off all electrical consume
Page 115 and 116: 12.5 Cold acceleration enrichment s
Page 117 and 118: 17 Pressure relief valve - removal,
Page 119 and 120: Fuel and exhaust systems - K-Jetron
Page 121 and 122: Chapter 4 Part C: Fuel and exhaust
Page 123 and 124: 1 To ignition control unit 2 Intake
Page 125 and 126: 6.3 Throttle valve switch adjustmen
Page 127 and 128: Chapter 4 Part D: Fuel and exhaust
Page 129 and 130: 1.0b Mono-Jetronic system inlet man
Page 131 and 132: distance of 4.0 mm by the operating
Page 133 and 134: Chapter 4 Part E: Fuel and exhaust
Page 135 and 136: 3.4 CO analyser and connecting pipe
Page 137 and 138: feed line attachment to the gravity
Page 139 and 140: Chapter 4 Part F: Fuel and exhaust
Page 141 and 142: A Front crankcase ventilation valve
Page 143 and 144: 12.1 Fuel pump and filter component
Page 145 and 146: Chapter 5 Part A: Ignition system -
Page 147 and 148: 1.1b Contact breaker ignition syste
Page 149 and 150: 7.4 Crankshaft pulley mark (A) timi
Page 151: Chapter 5 Part B: Ignition system -
Page 155 and 156: 6.4a TDC blanking plug - manual gea
Page 157 and 158: 7.5 Vacuum unit removal 7.7 Hall se
Page 159 and 160: Chapter 5 Part C: Ignition system -
Page 161 and 162: 6.2 Signal check method from Hall s
Page 163 and 164: Chapter 5 Part D: Starting and char
Page 165 and 166: 4.3 Battery retaining clamp and bol
Page 167 and 168: Chapter 9 Braking system Contents B
Page 169 and 170: 3 Use an Allen key and unscrew the
Page 171 and 172: 3.18 Rear brake caliper components
Page 173 and 174: 4.15 . . . followed by the outer wa
Page 175 and 176: 13 Refit the hydraulic pipe and tig
Page 177 and 178: 19 This method is particularly effe
Page 179 and 180: Chapter 10 Suspension and steering
Page 181 and 182: 1081 VW Golf & Jetta 1.1 Front susp
Page 183 and 184: 3.2 Front suspension camber adjustm
Page 185 and 186: 8.4 Removing rear suspension strut
Page 187 and 188: 11.3b Removing steering wheel centr
Page 189 and 190: 14.4 Steering tie-rod bellows and r
Page 191 and 192: 1081 VW Golf & Jetta Suspension and
Page 193 and 194: Removal 2 To remove the pump unit,
Page 195 and 196: Chapter 11 Bodywork and fittings Co
Page 197 and 198: Repair of rust holes or gashes in b
Page 199 and 200: hand. A largish screwdriver will ju
Page 201 and 202: 14 Door trim panel - removal and re
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15.3 Removing interior door handle
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22.4 Front bumper bracket securing
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6 Renew any retaining screw locatio
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28.9 Sunroof adjustment dimensions
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31.8 Front seat guide fixing - from
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Chapter 12 Body electrical systems
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k) Never use an ohmmeter of the typ
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6 Headlamp range control - removal
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4 If the indicators do not function
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17.2a Instrument panel unit compone
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Component testing Voltage stabilise
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3 Ease the wiper arm from the spind
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29 Windscreen wiper linkage - remov
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1081 VW Golf & Jetta Wiring diagram
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1081 VW Golf & Jetta Wiring diagram
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Relays (typical) 1 Vacant 2 Intake
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1081 VW Golf & Jetta Diagram 3 Ligh
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1081 VW Golf & Jetta Diagram 7 Brak
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1081 VW Golf & Jetta 12 Diagram 12
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1081 VW Golf & Jetta Diagram 20 Ele
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1081 VW Golf & Jetta Diagram 57 Glo
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