Land Rover Defender 90 110 Workshop Book 5 Rover
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4 .. :. . . .. .. . .. .. ... ... . . . . . . ., .. ,. . : .,, ..... .. . ..I .. , .- .. - lest ault Check Rectification ;NITION SYSTEM Connect 0 - 1 V voltmeter as in Test 15c. fit a jumper lead from earth to distributor body, with ignition on and contact breaker points closed: (i) Below 0.2V Remake earth connections between distributor body and earth (ii) Above 0.2V- High resistance or open circuit in distributor Checklrepair or renew contact breaker points, base plate screws earth lead or supply lead as necessary Connect 0 - 20 V voltmeter as in Test 15b, with ignition on and contact breaker points open: (i) Above 12 V- Continuity in primary windings of coil, supply line and ballast resistor if fitted Carry out Test 15g Carry out Test 15f ~ ~~~~ ~ (ii) Zero-open circuit feed to coil, open circuit primary windings, open circuit (iii) ballast resistor if fitted or short circuit in distributor or coil negative lead Connect 0 - 20 V voltage as in Test 15b, with ignition on and contact breaker points open. Remove coil negative lead from coil and recheck voltage: (i) Above 12V-Short circuit in coil, negative lead or distributor Check contact breaker points correctly fitted, short circuit in condenser (or capacitor when ballast resistor fitted) or SUPDIV lead; reDair or renew Carry out Test 15~ (ii) Zero -reconnect coil negative lead Connect 0 - 20 V voltmeter between earth and coil positive terminal, with ignition on and contact breaker points closed: (i) Above 12V -Coil primary windings open circuit (ii) 11.5V - 12V without ballast resistor If result of Test 15f was above 12V L.T. circuit is satisfactory 5V - 7V with ballast resistor (iii) Below 1l.W or zero without ballast resistor - Excessive resistance or open circuit supply to coil. Leaving the voltmeter connected to earth, work back through the supply circuit at the terminals on the ignition switch and solenoid until the resistance or open circuit is located Renew coil Fault elsewhere Rectifv and recheck (iv) Below 5V or zero with ballast resistor- Excessive resistance or open circuit in supply to coil Carry out Test 15H Connect 0 - 20 V voltmeter between earth and the lead from the ballast resistor to the coil positive terminal, with the ignition on and contact breaker points closed: (i) 5V - 7V or above 12V - Fault in the ballast resistor to coil lead Repair or renew lead then re-test ~~ ~ Carry out Test 15j (ii) Below 5V or zero -Excessive resistance or open circuit between battery and coil Connect 0 - 20 V voltmeter between earth feed lead to ballast resistor, with ignition on and contact breaker points closed: (i) Above 12V -Fault in ballast resistor Renew and re-test. If satisfactory fault elsewhere (ii) Zero or below I1.W- Fault in supply circuit from battery. Leaving the voltmeter connected to earth, work back through the supply circuit at the terminals on the ignition switch and solenoid until the fault is located. Rectify and re-test. If satisfactory fault elsewhcrc continued
ault Check GNITION SYSTEM rEST EQUIPMENT :A) Voltmeter 0 - 20V moviing coil :B) Voltmeter 0 - 1V movin;g coil Dhmmeter Test 14. H.T. Circuit kl ST1307M H ST1308M Disconnect main H.T. lead from distributor cap, hold approximately 6 mm (V4 in) from a good earth, ensure contact breaker points are closed, switch on ignition and flick contact breaker points open. Good healthy spark-Main H.T. lead, condenser and coil satisfactorv Poor or no soark Replace main H.T. lead with a known good H.T. lead and repeat Test Good healthy spark - Original H.T. lead faulty Poor or no soark Replace condenser with a known good one and repeat Test Good healthy spark - Original condenser faulty Poor or no soark Replace ignition coil with a known good coil and repeat Test Good healthy spark - original coil faulty e. Hold loose end of main H.T. lead approximately 3 mm (/I in) from the rotor arm electrode. Ensure contact breaker points are closed, switch on ignition and flick points open (i) Good healthy spark - Rotor arm shorting to earth (ii) Very faint or no spark - Rotor arm insulation satisfactory Check battery voltage and state of charge Connect voltmeter 0 - 1V between earth and coil negative terminal with ignition on and contact breaker points closed: (i) Below0.2V (ii) Above 0.2V- Resistance or open circuit Connect 0 - 1V voltmeter bttween earth and distributor L.T. terminal with ignition on and contact breaker points closed: (i) 15. L,.T. circuit continuity check: a. b. c. Below 0.2V -Resistance or open circuit between coil negative and distributor L.T. terminal (ii) Above 0.2V - Resistance or open circuit between earth and distributor L.T terminal Rectification Carry out Test 14e Carry out Test 14b Renew main H.T. lead. Carry out Test 14e Carry out Test 14c Renew condenser. Carry out Test 14e Carry out Test 14d Renew coil, refit original H.T. lead and condenser and repeat Tests 14a and b, or carry out Test 14e Renew rotor arm Carry out Test 15 See STARTING SYSTEM Carry out Test 15e Carrv out Test I5c Renew lead Carry out Test 15d continued
U U Connect voltmeter (B) as in Test 15C, fit ajumper lead from earth to distributor body, with ignition on and contact breaker points closed: (i) Below 0.2V (ii) Above 0.2V- High resistance or open circuit in distributor Connect voltmeter (A) as in Test 15b, with ignition on and contact breaker points open: (i) Above 12 V- Continuity in primary windings of coil, supply line and ballast resistor if fitted (ii) Zero -open circuit feed to coil, open circuit primary windings, open circuit ballast resistor if fitted or short circuit in distributor or coil -ve lead Connect voltage (A) as in Test lSb, with ignition on and contact breaker points open. Remove coil -ve lead from coil and recheck voltage: (i) Above 12 V- Short circuit in coil, -ve lead or distributor (ii) Zero -reconnect coil -ve lead Connect voltmeter (A) between earth and coil +ve terminal, with ignition on and contact breaker points closed: (i) Above 12V -Coil primary windings open circuit auk Checl Remake earth connections between distributor body and earth Checkhepair or renew contact breaker points, base plate screws earth lead or supply lead as necessary Carry out Test 15g Carry out Test 15f Check contact breaker points correctly fitted, short circuit in condenser (or capacitor when ballast resistor fitted) or supply lead; repair or renew Carry out Test 15g Renew coil ;NITION SYSTEM ,ontinued) (ii) 11SV - 12V without ballast resistor If result of Test 15f was above 12V L.T. circuit is satisfactory 5V - 7V with ballast resistor - est I Rectification Fault elsewhere (iii) Below 11.W or zero without ballast resistor - Excessive resistance or open circuit supply to coil. Leaving the voltmeter connected to earth, work back through the supply circuit at the terminals on the ignition switch and solenoid until the resistance or open circuit is located (iv) Below 5V or zero with ballast resistor-Excessive resistance or open circuit in supply to coil Connect voltmeter (A) between earth and the lead from the ballast resistor to the coil +ve terminal, with the ignition on and contact breaker points closed: (i) 5V - 7V or above 12V- Fault in the ballast resistor to coil lead (6) Below SV or zero-Excessive resistance or open circuit between battery and coil Connect voltmeter (A) between earth feed lead to ballast resistor, with ignition on and contact breaker points closed: (i) Above 12V -Fault in ballast resistor Rectify and recheck Carry out Test 15h Repair or renew lead then re-test Carry out Test 15j Renew and re-test. If satisfactory fault elsewhere (ii) Zero or below 11.W- Fault in supply circuit from battery. Leaving the voltmetei connected to earth, work back through the supply circuit at the terminals on the ignition switch and solenoid until the fault is located. Rectify and re-test. If satisfactory fault elsewhere I continued
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ELECTRICAL EQUIPMENT - FAULT TRACING in e, m U C m vi C - n .P c U e, C C 0 U m 24 4 - - - Y U d L a, L n VI U C m I I 5 I c m 9 C 0 a, 2 a, C m - .- B I > ? C a, 0 D < U 2 .- e C U 61
Q N Fault Check STARTER SYSTEM 25. Drive faulty a. b. c. Remove starter: check condition of pinion and starter ring gear Inertia drive, check that pinion rotates freely Check that crankshaft rotates freely d. 26. Ignition circuit fault Lock torque, free running speed and current Rectification a. Renew pinion or ring gear b, Renew inertia drive c. Check for engine fault, tight or siezed d. Check brushes - overhaul starter See IGNITION SYSTEM
I. Speedlometer illumination 2. Fuel indicator illumination 3. Water temperature illumination 4. Rear log lamps 5. Number plate lamp 6. LH tail lamp 7. LH side lamp 8. RH tail lamp 9. RH side lamp 10. LH headlamp dip beam 11. RH headlamp dip beam 12. LH headlamp main beam 13. RH headlamp main beam 14. Interior lamp 15. Stop lamp 16. Horn 17. LH side repeater 18. LH front indicator 19. LH rear indicator 20. RH front indicator 21. RH rear indicator 22. RH side repeater 23. Auxiliary instrument illumination 24. Panel illumination switch 25. Rear fog switch 26. Interior lighting switch 27. Washer pump 28. Steering column switches 29. Grouped warning lights (comprising items 3,0 to 43) KEY TO FOUR CYLINDER PETROL DIAGRAM 30. Trailer warning light 31. Side light warning light 32. Rear fog warning light 33. Main beam warning light 34. Spare position 35. Low fuel warning light 36. Locked four -wheel drive warning 37. Cold start warning light 38. Oil warning light 39. Charge warning light 40. Brake warning light 41. Park brake warning light 42. Direction indicator warning light 43. Seat belt warning light 44. Locked four -wheel drive switch 45. Clock 46. Reversing lamps 47. Wiper motor 48. Reversing lamp switch 49a Brake fluid loss switch (Ninety models only 49b Pressure differential warning actuator switch (One Ten models only) light 50. Heater switch 51. Stop lamp switch 52. Flasher unit 53. Oil pressure switch 54. Brake check relay 55. Park brake switch 56. Light switch 57. Pick -up point for front fog lamps 58. Fuses 59. Heater motor 60. Hazard switch 61. Hazard switch illumination 62. Ignition light resistor 63. Starter solenoid 64. Spare pick -up point 65. Start relay 66. Distributor 67. Pick -up point for auxiliary trailer 68. Fuel indicator 69. Water temperature indicator 70. Oil pressure indicator 71. Oil temperature indicator 72. Battery 73. Alternator 74. Start switch 75. Coil 76. Battery condition indicator 77. Pick -up point for auxiliary instrument illumination 78. Fuel tank unit 79. Water temperature transmitter 80. Oil pressure transmitter 81. Oil temperature transmitter Key to cable colours R Black G Green K Pink L Light N Brown 0 Orange P Purple R Red S Slate U Blue W White Y Yellow The last letter of a colour code denotes the tracer colour Earth connections via cables Earth connections via fixing t~olts Connectors via plug and socket Snap connectors Permanent in-line connections
FOUR CYLINDER 2.25 DIESEL, I LGP B q-g 34 I h39 - NY 44 I I\AI ++- WR WB 1 W m N NR 1 W W I JI I .. W I WII N