ESP LAMBORGHINI GALLARDO 2009 Repair Manual

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During braking the ABS function allows the modulation of the braking force effectively applied to each wheel, thus preventing one or more wheels from becoming blocked, which would otherwise cause the loss of control of the vehicle.
The control unit carries out the corrections to the braking by reading the relative speed of each wheel, obtained by special sensors (pick-up).
To guarantee a good signal quality, the distance between the pick-up and the phonic wheel must be between 0.9
÷ 1.0 mm. The electro-hydraulic control unit carries out all the corrections on the braking, using 4 ISO valves and 4
DUMP valves. When an ISO valve is closed, the disc brake calliper is isolated from the hydraulic pump.
The DUMP valve, on the other hand, is used to reduce the pressure of the corresponding disc brake calliper that
is present in the hydraulic circuit. If, during normal use of the vehicle, the ABS warning light on the dashboard is
switched on and the buzzer sounds at the same time, it means that the ABS control unit has found a fault in the
system. When the warning light is on the ABS does not work; this means that in the vehicle the braking system works
anyway, but the electronic control on the braking is deactivated. $%6V\VWHPYDFXXPUHFRYHU\SXPS
The electric vacuum recovery pump is positioned in the front bumper area and is controlled by the MASTER engine injection control unit only with the engine running.
Its operation is determined by a pressure sensor that calculates its drop and makes the pump cut in to maintain the vacuum. Its operation can be checked by means of the LaRa-AS engine control unit “01” Basic setting 8 (109000).

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3.
Remove ABS pipes A3and A4by unscrewing the nuts securing them to the corresponding connections with
the right rear brake calliper ( ')LJ) and the right front brake calliper ( ()LJ).
4. Remove ABS pipes A5and A6by unscrewing the nuts securing them to the corresponding connections with
the left rear brake calliper ( ))LJ) and the left front brake calliper ( *)LJ).

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Position ABS pipes A5and A6by tightening the nuts securing them to the corresponding connections with the
left rear brake calliper ( $)LJ) and the left front brake calliper ( %)LJ).
2. Position ABS pipes A3and A4by tightening the nuts securing them to the corresponding connections with the
right rear brake calliper ( &)LJ) and the right front brake calliper ( ')LJ).
3. Position ABS pipes A1and A2()LJ)LJ ) by tightening the nuts ( ()LJ) securing them to the brake booster
pump.
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The ESP function (Electronic Stability Program) controls the car’s dynamic behavior during fast cornering; when the
car’s speed and steering are not compatible with traction. In this situation the ESP uses the brake system and engine
torque to maintain the car’s trajectory. 7KH¿JXUHVKRZVWKHEHKDYLRURIDFDUFRUQHULQJDWDFRQVWDQWVSHHG
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1.
The driver steers, the lateral forces increase.
2. The vehicle begins to become unstable.
3. Countersteering, the driver loses control of the vehicle.
4. The vehicle becomes uncontrollable.
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1.The driver steers, the lateral forces increase.
2. The vehicle begins to become unstable. The ESP intervenes, braking the front right wheel.
3. The vehicle remains under control.
4. The vehicle begins to become unstable. The ESP intervenes, braking the front left wheel until the vehicle has been stabilized.
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7KH(63XVHVLQIRUPDWLRQSURYLGHGGLUHFWO\IURPVHQVRUV •Yaw rate and lateral acceleration; sensor located in the passenger compartment on the bench
• Steering angle; sensor located on the steering column
• Brake pressure; sensor
• Wheel speed sensors; the same as for the ABS
'DWDSURFHVVHGGLUHFWO\E\WKHFRQWUROXQLWUHFHLYHGIURPVHQVRUVLJQDOV• linear speed of the vehicle
•  ÀRDWDQJOH GLUHFWLRQRIPRWLRQZLWKUHVSHFWWRWKHORQJLWXGLQDOD[LVRIWKHYHKLFOH
• lateral forces acting on the wheels
• sideslip angle
• lateral speed of the vehicle
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brakes one or two wheels to create a yaw moment that places the car in the direction requested by the driver.
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UHÀHFWVWKHG\QDPLFEHKDYLRU ++&+LOO+ROGHU&RQWURO The ³+LOO+ROGHU&RQWURO´ ++& system helps and makes it easier for the driver to drive off going uphill.
It goes into operation when the ESP detects a change of gradient when the vehicle is running.
7KH(63WKHUHIRUHVHWVLWVHOIXSWRLQWHUYHQHGXULQJWKHXSKLOOSLFNXSLI¿UVWJHDULVHQJDJHGDQGWKHEUDNHSHGDOLV being pressed down.
In this case, the pressure of the brake calipers is kept for about 1.5 seconds after the brake pedal is released so the
driver can easily drive off pressing the accelerator pedal without the vehicle quickly backing up.
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The same is true when reverse gear is engaged. The system is activated in uphill starts (but in reverse gear), but is deactivated in downhill starts.

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 %HIRUHDVVHPEOLQJWKHJHDUVKLIWVHOHFWRUJULGDGMXVWWKHJHDUER[   1. Position the lever and gear selection cable assembly.
2. Tighten the three screws ( $)LJ) securing the gear selection cable support bracket to the gearbox.
 Secure the gear selection cables, release the safety springs ( %)LJ) and position the corresponding clips
¿[LQJWKHPWRWKHEUDFNHW &)LJ).
4.  7LJKWHQWKHVFUHZVVHFXULQJWKHFODPSV¿[LQJWKHJHDUVHOHFWLRQFDEOHV ')LJ) to the chassis and engine.
5. Secure the air conditioning circuit pipes ( ()LJ) by fastening the corresponding brackets ( ))LJ).

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 Tighten the four screws ( *)LJ) securing the gearbox lever assembly to the center console.
7. Position the ornament ( +)LJ) of the switches on the center console and connect the corresponding connectors
( ,)LJ ).
8. Tighten the two screws ( -)LJ5) securing the gearshift selector grid.
9. Position and tighten the gearbox lever knob ( .)LJ).
•  $VVHPEOHWKHDLU¿OWHU  .
• Assemble the engine bay aesthetic panels  .
• Assemble the propeller shaft  .
•  $VVHPEOHWKHFHQWUHDQGUHDUYHKLFOHÀRRUV  .

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&KHFNLQJWKHEUDNHSHGDO )25(*($59(56,2121/< 1. Position a rod so that one end passes through near the steering wheel ( Fig.1) and the other end is positioned
on the bottom left corner of the brake pedal ( Fig.2).
2. Hold the pedal in the neutral position and mark the height at which the steering wheel is aligned on the rod.
3. Act on the brake pedal until the STOP lights switch on, and then mark the height at which the steering wheel is
aligned on the rod.
4. Measure the distance between the two marks. The pedal stroke MUST measure between 3 mm and 10 mm. If
these values do not correspond, adjust the SWITCH   .

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B) Front bumper 1.
Secure the 4 supports on the car (2 supports ( A-Fig.2) per side).
2. Assemble the 4 side mounting brackets on the bumper (2 brackets ( B-Fig.3) per side).
3. Insert the front bumper on the car, inserting the brackets in the respective supports.

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7. Disconnect the connection ( *)LJ) of the temperature sensor.
8. Remove the front bumper releasing the 4 brackets ( +)LJ) (2 per side) on the bumper from the corresponding
supports ( ,)LJ) on the vehicle.

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