DISCOVERY
K1 ETM
motor then runs at the low–medium speed. When
the Passenger’s Rear Fan Speed Switch (X246) is
turned to position III, the Rear Blower Motor Relay
(K193) remains energized. Ground is now applied
to the Rear Blower Motor (M145) through one
resistor of the Rear Blower Motor Resistor Unit
(Z215) and the Passenger’s Rear Fan Speed
Switch (Z246).
Heated Air
With the Ignition Switch (X134) in position II,
battery voltage is applied to the Ignition Load Relay
(K127). The relay is energized, applying battery
voltage to the Left Maximun Cool Switch (X267).
When the Left and Right Temperature Controls are
turned to the maximum cool position, the Left
Maximum Cool Switch (X267) and Right Maximum
Cool Switch (X268) close. Battery voltage is now
applied to the Water Valve (K206). The Water
Valve (K206) closes and prevents heated engine
coolant from entering the heater matrix. When one
or both of the Temperature Controls are not in the
maximum cool position, battery voltage is not
applied to the Water Valve (K206). The valve then
opens and allows heated engine coolant to enter
the heater matrix.
The motor then runs at medium–high speed. When
the Passenger’s Rear Fan Speed Switch (X246) is
turned to position IV, the Rear Blower Motor Relay
(K193) remains energized. Ground is now applied
directly to the Rear Blower Motor (M145) through
the Passenger’s Rear Fan Speed Switch (X246).
The motor then runs at high speed.
Rear Blower
With the Ignition Switch (X134) in position II,
battery voltage is applied to the Ignition Load Relay
(K127). The relay is energized, applying battery
voltage to the Rear Blower Motor Relay (K193), the
Rear A/C Fan Speed Relay (K205) and the Rear
A/C Control Relay (K194).
When the Rear A/C System is turned on, the Rear
A/C Switch Amplifier provides ground to the Rear
A/C Control Relay (K194). The relay is energized,
applying ground to the Rear A/C Fan Speed Relay
(K205). The Rear A/C Fan Speed Relay (K205)
then energizes. When the Passenger’s Rear Fan
Speed Switch (X246) is turned to position I, ground
is applied to terminal 85 of the Rear Blower Motor
Relay (K193) through the closed switch contacts of
the Rear A/C Fan Speed Relay (K205). The Rear
Blower Motor Relay (K193) energizes, applying
battery voltage to terminal 1 of the Rear Blower
Motor (M145).
Ground is applied to the Rear Blower Motor (M145)
through all three resistors of the Rear Blower
Resistor Unit (Z215). The Rear Blower Motor
(M145) then runs at low speed. When the
Passenger’s Rear Fan Speed Switch (X246) is
turned to position II, the Rear Blower Motor Relay
(K193) remains energized. Battery voltage is still
applied to terminal 1 of the Rear Blower Motor
(M145). Ground is now applied to the Rear Blower
Motor (M145) through two resistors of the Rear
Blower Motor Resistor Unit (Z215) and the
Passenger’s Rear Fan Speed Switch (X246). The
2
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
| 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 |
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