Land Rover Discovery: Anti-Theft - Active Anti-Theft Alarm Horn with Integral Battery (G1791765)
/ Removal and Installation
SPECIAL TOOL(S)
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REMOVAL
NOTE:
Removal steps in this procedure may contain installation details.
WARNING:
Make sure to support the vehicle with axle stands.
Raise and support the vehicle.
Refer to: Fender Splash Shield (501-02 Front End Body Panels,
Removal and Installation).
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Special Tool(s): JLR-419-003
Torque: 7 Nm
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Torque: 7 Nm
INSTALLATION
To install, reverse the removal procedure.
Anti-theft - active hood switch (G1791766) removal and installation
REMOVAL
NOTES:
- Removal steps in this procedure may contain installation details.
- Left hand illustration shown, right hand is similar.
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Torque: 10 Nm
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Torque: 5 Nm
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Torque: 10 Nm

INSTALLATION
- To install, reverse the removal procedure.
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COMPONENT LOCATION
Central Junction Box (CJB)
Instrument Cluster (IC)
Immobilizer Antenna Unit (IAU)
Smart key
Radio Frequency (RF) receiver
Battery Back-Up Sounder (BBUS)
Hood switch
Tailg
Description
The door modules provide the interface between the door latch motors, the
door and latch switches and the Central Junction Box (CJB). The door
modules provide door micro switch status info
Operation
The Central Junction Box (CJB) automatically arms and disarms the active
anti-theft system when it operates the Central Locking System (CLS).
On vehicles without a volumetric sensor, only t
SEE MORE:
Engine cranking is requested when the stop/start switch is pressed and the
driver has depressed the brake pedal. When engine cranking is requested,
the ECM checks that a valid key code has been received and the
transmission is in Park (P) or Neutral (N) before granting the crank request.
Once engine
Retaining screw
Wheel speed sensor
Bearing seal and magnetic encoder ring
Wheel bearing
Wheel hub
An active wheel speed sensor is installed in each wheel knuckle, and
provides the Anti-lock Brake System (ABS) control module with a rotational
speed signal from each road wheel. The head of ea