1999 LAND ROVER DISCOVERY sensor

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Page 244 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual EMISSION CONTROL - V8
DESCRIPTION AND OPERATION 17-2-11
Exhaust Emission Control System
The fuel injection system provides accurately metered quantities of fuel to the combustion chambers to ensure th

Page 246 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual EMISSION CONTROL - V8
DESCRIPTION AND OPERATION 17-2-13
Catalytic converters for NAS low emission vehicles (LEVs) from 2000MY have active constituents of 
palladium and rhodium only. The active consti

Page 247 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual EMISSION CONTROL - V8
17-2-14 DESCRIPTION AND OPERATION
The heated oxygen sensor is screwed into threaded mountings welded into the top of the front exhaust pipes at 
suitable locations. They are used

Page 249 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual EMISSION CONTROL - V8
17-2-16 DESCRIPTION AND OPERATION
The ECM connectors and pins which are pertinent to evaporative emission control are listed in the following table:
Fuel Leak Detection System (v

Page 251 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual EMISSION CONTROL - V8
17-2-18 DESCRIPTION AND OPERATION
Fuel Vapour Separator (NAS version illustrated)
1Filler neck
2Filler cap
3Liquid vapour separator (LVS)
4To fuel tank
5Vapour from fuel tank to

Page 255 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual EMISSION CONTROL - V8
17-2-22 DESCRIPTION AND OPERATION
The valve is normally open, allowing any build up of air pressure within the evaporation system to escape, whilst 
retaining the environmentally

Page 256 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual EMISSION CONTROL - V8
DESCRIPTION AND OPERATION 17-2-23
For systems utilising the vacuum method for determining evaporation leaks, the sensor is used to monitor for a drop 
in vacuum pressure. The eva

Page 260 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual EMISSION CONTROL - V8
DESCRIPTION AND OPERATION 17-2-27
The ECM connector and pins pertinent for secondary air injection are listed in the following table:
Secondary Air Injection System Components
Th