Fiat BRAVO 1.4 16v TJet – ESP – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - ESP - Fiat BRAVO 1.4 16v TJet

ESP - WIRING DIAGRAM Fiat BRAVO 1.4 16v TJet

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COMPONENTS - ESP - Fiat BRAVO 1.4 16v TJet

Component code	Description	Reference to the operation
B001	JUNCTION UNIT
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXI FUSE BOX ON BATTERY	-
C010	LEFT FRONT EARTH	-
C012	ABS FRONT EARTH	-
C038	EARTH ON CENTRE TUNNEL	-
D001	FRONT/DASHBOARD COUPLING	-
D006	FRONT/REAR COUPLING	-
E050	INSTRUMENT PANEL
H001	IGNITION SWITCH
H090	SWITCH CONTROL PANEL
I030	BRAKE PEDAL SWITCH
K070	LEFT FRONT WHEEL SENSOR FOR ABS
K071	RIGHT FRONT WHEEL SENSOR FOR ABS
K074	SLEWING SENSOR (VDC)
K075	LEFT REAR WHEEL SENSOR FOR ABS
K076	RIGHT REAR WHEEL SENSOR FOR ABS.
M001	BODY COMPUTER
M050	ABS CONTROL UNIT
R010	MULTIPLE TESTER CONNECTION	-

COMPONENT LOCATION - ESP - Fiat BRAVO 1.4 16v TJet

ESP - COMPONENT LOCATION Fiat BRAVO 1.4 16v TJet

Get access to all wiring diagrams of the car

Component code	Description	Reference to the operation
B001	JUNCTION UNIT
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXI FUSE BOX ON BATTERY	-
C010	LEFT FRONT EARTH	-
C012	ABS FRONT EARTH	-
C038	EARTH ON CENTRE TUNNEL	-
D001	FRONT/DASHBOARD COUPLING	-
D006	FRONT/REAR COUPLING	-
E050	INSTRUMENT PANEL
H001	IGNITION SWITCH
H090	SWITCH CONTROL PANEL
I030	BRAKE PEDAL SWITCH
K070	LEFT FRONT WHEEL SENSOR FOR ABS
K071	RIGHT FRONT WHEEL SENSOR FOR ABS
K074	SLEWING SENSOR (VDC)
K075	LEFT REAR WHEEL SENSOR FOR ABS
K076	RIGHT REAR WHEEL SENSOR FOR ABS.
M001	BODY COMPUTER
M050	ABS CONTROL UNIT
R010	MULTIPLE TESTER CONNECTION	-

DESCRIPTION - ESP - Fiat BRAVO 1.4 16v TJet

The ABS electronic anti-lock braking system regulates the braking pressure transmitted to the wheels, preventing them from losing grip whatever the tyre and road conditions.It is linked to the ESP (Electronic Stability Program) system which controls the stability of the vehicle, intervening, if necessary, on the drive torque and braking the wheels in a differentiated manner: If grip is lost, it helps to restore the vehicle to the correct trajectory. The most comprehensive versions of the ABS control unit also implements ESP (Electronic Stability Program) and ASR (Anti Slip Regulation) functions in addition to the HH "Hill Holder" function and the MSR function (adjustment of engine braking torque during gear change),The ESP system also acts on the motor and brakes to generate a stabilising torque when the ABS sensors detect conditions that cause the vehicle to slip. The ESP system has a specific sensor in addition to the ABS sensors: this sensor detects vehicle rotation about the vertical axis and side acceleration (centrifugal force) (yaw sensor); it also uses steering sensor signals from the electric steering control unit supplied via the CAN.With the Hill Holder function, a longitudinal acceleration sensor is also used that is built into the yaw sensor. The ESP system also uses information from the pressure sensor that measures pressure in the hydraulic circuit: this sensor is built into the hydraulic control unit.The ESP system is always combined with the ASR system.The ASR system increases the active safety and stability of the vehicle controlling the slipping of the drive wheels: if the slipping is caused by the transmission of excessive power, the system cuts in, with the co-operation of the engine management control unit, to reduce engine power output. If, on the other hand, the slipping is detected at one wheel only, the system cuts in to brake the slipping wheel only by means of the wheel''s modulating solenoid valve.The ASR comes on automatically whenever the engine is started: the system can be switched off using the "ASR OFF) button located in the controls in the centre of the dashboard, right side.When the system is off, an LED in the button and a warning light in the control panel come on simultaneously. The ESP function, on the other hand, is switched on automatically each time the engine is started up and cannot be turned off.The Hill Holder system is designed to assist the driver when setting off on an incline. In effect the HH is capable of automatically providing sufficient braking torque to keep the vehicle stationary until the clutch is fully released and the engine torque is sufficient to start the vehicle comfortably.The Hill Holder is automatically activated when the brake pedal is pressed in conjunction with the following conditions: the vehicle speed equal to zero, the gradient more than 2% and the clutch pedal pressed; the moment the brake pedal is released, with all the other conditions being equal, the Hill Holder keeps the braking system pressurized for 2 seconds to allow the driver to move their foot from the brake pedal to the accelerator pedal without the vehicle slipping backwards and without using the parking brake.Once the accelerator is pressed, the Hill Holder continues to keep the vehicle still for a further 10 seconds or until the engine torque is sufficient to start the vehicle.For more detailsASR/ESP warning light: the warning light flashes when the system cuts in to notify the driver that the ASR has come on due to road grip conditions.When the control unit detects an error in the ASR or ESP or HH function, it turns on the warning light in fixed mode.The control unit power supply lines are protected by two special fuses located in the engine compartment junction unit; the ignition-operated supply is protected by a specific fuse in the junction unit under the dashboard.

FUNCTIONAL DESCRIPTION - ESP - Fiat BRAVO 1.4 16v TJet

The ABS electronic control unit receives a power supply (at pins 2 and 3) directly from the battery from the line protected by fuses F1 and F23 of the engine compartment junction unit B1.The ignition-controlled power supply (INT) arrives at pin 18 from the line protected by fuse F42 of the junction unit under the dashboard B2.The control unit is earthed at pins 1 and 4.The four sensors K70, K71, K75, K76 send wheel speed signals respectively to pins 5-16, 10-9, 17-6, 19-8 of control unit M50.The brake pedal switch I30 sends an enablement signal to pin 20 of the control unit M50: all intervention of the ABS is excluded unless the brake pedal is pressed (signal from N.A. contact); switch I30 receives an ignition-controlled power supply (INT) from fuse F37 of junction unit B2.The yaw and lateral and longitudinal acceleration sensor K74 receives an ignition-operated supply (INT) from a line protected by fuse F42 of the junction unit under the dashboard B2 and is connected via the CAN line to ABS control unit M50, to Body Computer M1 and to engine managment control unit M10.The “ASR OFF” control button on panel H90A sends a deactivation signal to pin 21 of M50, while pin 22 is the origin of a signal that turns on the LED - in panel H90A with the system off; the switch of H90 is ignition-operated (INT) from fuse F49 of the junction unit under the dashboard B2.The discrete speedometer signal sent to certain systems requiring this information leaves from pin 23 of M50; the same signal is replicated via the CAN.Via the CAN line, ABS control unit M50 is connected - from pins 14 and 25 - to the engine management control unit M10 and, from pins 15 and 26, to the Body Computer M1 and the instrument panel E50, to manage the ABS warning light and, if the problems concern the ASR or ESP or HH function, the ESP/ASR warning light.The autodiagnostic data can be read by connecting to connector C of the Body Computer M1 - pin 1: it receives signals from pin 11 of control unit M50 via the special diagnostic line.On right hand drive versions there is also diagnostic connector R10 separate from the Body Computer.