Workshop Manuals Factory service & repair Land Rover
01 Discovery Series II - Workshop Manual - 1999MY ON - 6th Edition - NAS02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 INTRODUCTION32 33 GENERAL INFORMATION34 35 GENERAL DATA36 IDENTIFICATION NUMBERS37 38 TORQUE WRENCH SETTINGS39 40 LIFTING AND TOWING41 CAPACITIES, FLUIDS, LUBRICANTS AND SEALANTS42 43 44 MAINTENANCE45 46 ENGINE - V847 48 EMISSION CONTROL - V849 50 ENGINE MANAGEMENT SYSTEM - V851 FUEL DELIVERY SYSTEM - V852 53 COOLING SYSTEM - V854 55 MANIFOLDS AND EXHAUST SYSTEMS - V856 57 58 59 CLUTCH - V860 61 MANUAL GEARBOX - R38062 63 TRANSFER BOX - LT230SE64 65 66 AUTOMATIC GEARBOX - ZF4HP22 - 2467 PROPELLER SHAFTS68 69 REAR AXLE70 71 72 73 74 75 FRONT AXLE76 77 78 79 STEERING80 FRONT SUSPENSION81 82 83 REAR SUSPENSION84 85 86 87 BRAKES88 RESTRAINT SYSTEMS89 90 DOORS91 EXTERIOR FITTINGS92 93 INTERIOR TRIM COMPONENTS94 SCREENS95 96 97 SEATS98 99 SUNROOF100 CHASSIS AND BODY DIMENSIONS101 102 103 104 PANEL REPAIRS105 106 107 108 BODY SEALING MATERIALS109 110 111 112 113 CORROSION PREVENTION AND SEALING114 PAINTING115 HEATING AND VENTILATION116 117 AIR CONDITIONING118 119 WIPERS AND WASHERS120 CHARGING AND STARTING121 122 LIGHTING123 BODY CONTROL UNIT124 125 126 ALARM SYSTEM AND HORN127 128 WINDOWS129 IN CAR ENTERTAINMENT130 HARNESSES131 DRIVING AIDS132 NAVIGATION SYSTEM133 INSTRUMENTS
Land Rover Discovery II50 · ENGINE MANAGEMENT SYSTEM - V8
50 · Engine

Description - cruise control (ENGINE MANAGEMENT SYSTEM - V8) (page 10 of 11)

Make
Land Rover
Model
Discovery II
Section
DESCRIPTION AND OPERATION
ENGINE MANAGEMENT SYSTEM - V8Description - cruise control · page 10 of 11
background image

ENGINE MANAGEMENT SYSTEM - V8

18-2-72 DESCRIPTION AND OPERATION

Several fault codes can be generated:

Fault codes 

1 "Output power LOW when HIGH is expected" is flagged when Pin C0239-11 is shorted to earth. 

This could be due to an external fault or an internal ECU fault and will be set  if pin C0239-11 is LOW for longer 
than 240 milliseconds, while in cruise mode.

2 "Output power HIGH when LOW is expected" is flagged when Pin C0239-11 is shorted to battery voltage. 

This could be due to an external fault or internal ECU fault and will be set if pin C0239-11 is HIGH for longer than 
250 milliseconds while not in cruise mode.

3 "Output pump LOW, when High is expected" is flagged when Pin C0239-7 is shorted to earth. 

 This could be due to an external fault or an internal ECU fault. This fault will be set if  pin C0239-11 is HIGH for 
longer than 7.5 milliseconds while pin C0239-7 is LOW for longer than 2.5 milliseconds while decelerating under 
control of cruise.

4 "Output pump HIGH, when LOW is expected" is flagged when Pin C0239-7 is shorted to battery voltage.

  This could be due to an external fault or an internal ECU fault. This fault will be set if  pin C0239-7 is LOW for 
longer than 7.5 milliseconds of the last 8 pulses when the pump is switched on while accelerating under the 
control of cruise. 

5 Output valve LOW, when HIGH is expected is flagged when Pin C0239-7 is shorted to battery voltage.

 This could be due to an external fault or an internal ECU fault and will be set if pin C0239-17 is LOW for longer 
than 2.5 milliseconds while pin C0239-7 is HIGH for longer than 2.5 milliseconds and pin C0239-11 is also HIGH 
for longer than 7.5 milliseconds, while decelerating under control of the cruise control ECU.

6 Output valve HIGH, when LOW is expected is flagged when Pin C0239-17 is shorted to battery voltage. 

 This could be an external fault or an internal ECU fault. The fault will be set if  pin C0239-17 remains HIGH for 
longer than 35 milliseconds after the vacuum control valve is switched on, while accelerating under control of 
the cruise control ECU. 

TestBook can be used to determine the fault codes present as well as the general status of the system.

Parts & tools for this job Staging For Land Rover Discovery

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.