DISCOVERY
ETM K1
Fresh Air position interrupting the ground supply.
The solenoid now stops and remains in the Fresh
Air position.
CIRCUIT OPERATION
Front Blower
Recirculated Air Mode
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 Front Blower Motor Relay (K192).
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 Air Recirculation Solenoid In–Line
Fuse (P138) and Air Recirculation Solenoid (K123).
When the Air Supply Selector Switch is moved to
Recirculate Air position, ground is applied to the Air
Recirculation Solenoid (K123). The solenoid now
closes the fresh air intake flap allowing only the air
inside the vehicle cabin to circulate. When the fresh
air intake flap has been fully closed, the
When the Front Fan Speed Switch (X247) is turned
to position I, ground is applied to terminal 85 of the
Front Blower Motor Relay (K192). The relay is
energized, applying battery voltage to terminal 2 of
the Front Blower Motor (M101). Ground is applied
to the Front Blower Motor (M101) through all three
resistors of the Front Blower Resistor Unit (Z214).
The Front Blower Motor (M101) then runs at low
speed. When the Front Fan Speed Switch (X247)
is turned to position II, the Front Blower Motor
Relay (K192) remains energized. Battery voltage is
still applied to terminal 2 of the Front Blower Motor
(M101). Ground is now applied to the Front Blower
Motor (M101) through two resistors of the Front
Blower Resistor Unit (Z214) and the Front Fan
Speed Switch (X247). The motor then runs at the
low–medium speed. When the Front Fan Speed
Switch (X247) is turned to position III, the Front
Blower Motor Relay (K192) remains energized.
Ground is now applied to the Front Blower Motor
(M101) through one resistor of the Front Blower
Resistor Unit (Z214) and the Front Fan Speed
Switch (X247). The motor then runs at the
microswitch inside the Air Recirculation Solenoid
(K123) moves to the Recirculate Air position
interrupting the ground supply. The solenoid now
stops and remains in the Recirculate Air position.
medium–high speed. When the Front Fan Speed
Switch (X247) is turned to position IV, the Front
Blower Motor Relay (K192) remains energized.
Ground is now applied directly to the Front Blower
Motor (M101) through the Front Fan Speed Switch
(X247). The motor then runs at high speed.
Fresh Air Mode
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 Air Recirculation Solenoid In–Line
Fuse (P138) and Air Recirculation Solenoid (K123).
When the Air Supply Selector Switch is moved to
the Fresh Air position, ground is applied to the Air
Recirculation Solenoid (K123). The solenoid now
opens the fresh air intake flap allowing fresh air to
enter the vehicle cabin. When the fresh air intake
flap has been fully opened, the microswitch inside
the Air Recirculation Solenoid (K123) moves to the
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 |
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