DISCOVERY
ETM B1
CIRCUIT OPERATION
StartingSystem
PuttingtheIgnitionSwitch(X134)inpositionIII
appliesbatteryvoltagetotheStarterSolenoid
Relay(K137). TheStarterSolenoidRelay(K137)
energizesandappliesbatteryvoltagetothe
StarterSolenoid(K136)andStarter(M134).
Onmanualtransmissionvehiclesequippedwitha
theftalarm,theTheftAlarmUnit(Z163)providesa
groundcircuittotheStarterSolenoidRelay's
(K137)86terminal.
Onautomatictransmissionvehiclesequippedwith
atheftalarm,theTheftAlarmUnit(Z163)provides
agroundcircuittotheStarterSolenoidRelay's
(K137)86terminalviathePark/NeutralPosition
Switch(X167).
Ifthetheftalarmisactivated,theTheftAlarmUnit
(Z163)willinterrupttheStarterSolenoidRelay's
(K137)groundpathandpreventstartingthe
engine.
ForvehiclesnotequippedwithTheftAlarm,a
blackwireisusedtoshortpins1and2ofC274.
ChargingSystem
WhentheIgnitionSwitch(X134)isinpositionII,
batteryvoltageisappliedtothechargingsystem
faultlight. WhentheGenerator(Z106)isbeing
turnedbytheengine,itsstatorwindingsare
excitedbyvoltageappliedtotheGenerator(Z106)
viathechargingsystemfaultlight. TheGenerator
(Z106)beginstoproduceelectricityinorderto
chargethevehicleBattery(P104). Ifthe
Generator(Z106)failstoproducepower,the
Generator(Z106)groundsthefaultlightcontrol
wire,causingthechargingsystemfaultlightto
glow.
Thetachometerdisplaysenginespeedinrpm.
VoltagepulsesaretakenfromtheGenerator
(Z106)andaregeneratedwhentheenginedrive
beltturnstheGeneratorpulley.Thetachometer
respondstothefrequencyofthevoltagepulses,
whichincreasesproportionallytothatofthe
enginespeed.
E L E C T R I C A L T R O U B L E S H O O T I N G M A N U A L
1
| Categories | Land Rover, Land Rover Discovery |
|---|---|
| Tags | Land Rover |
| Model Year | 1995 |
| Download File |
|
| Document Type | Electrical Troubleshooting Manual |
| Language | English |
| Product Name | Discovery |
| Product Brand | Land Rover |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)