Wiring diagram - ESP - Fiat PANDA 1.3 JTD 16v
COMPONENTS - ESP - Fiat PANDA 1.3 JTD 16v
| Component code | Description | Reference to the assembly |
| B1 | engine compartment junction unit | |
| D1 | Front/dashboard coupling | - |
| D1 | front/dashboard coupling | - |
| D97 | Short circuit coupling | - |
| E50 | Instrument panel | |
| H1 | Ignition switch | |
| I30 | Brake pedal switch | |
| K71 | Right front wheel sensor for ABS | |
| K75 | Left rear wheel sensor for ABS | |
| M1 | Body computer | |
| M51 | Braking system control unit | - |
Component location - ESP - Fiat PANDA 1.3 JTD 16v
COMPONENTS - ESP - Fiat PANDA 1.3 JTD 16v
| Component code | Description | Reference to the assembly |
| B1 | engine compartment junction unit | |
| D1 | Front/dashboard coupling | - |
| D1 | front/dashboard coupling | - |
| D97 | Short circuit coupling | - |
| E50 | Instrument panel | |
| H1 | Ignition switch | |
| I30 | Brake pedal switch | |
| K71 | Right front wheel sensor for ABS | |
| K75 | Left rear wheel sensor for ABS | |
| M1 | Body computer | |
| M51 | Braking system control unit | - |
Description - ESP - Fiat PANDA 1.3 JTD 16v
The management of the ESP function is entrusted to the braking system control unit which, by processing the values acquired from the various sensors (lateral acceleration sensor, slewing sensor, steering angle sensor, wheel rpm sensors and pressure sensors) using software algorithms, monitors the dynamic control parameters (slipping of the wheels, axle drift, geometry angle) and interprets any errors made by the driver implementing suitable measures to restore the vehicle to a stable condition.In addition to the sensors mentioned above and obviously the control unit, the system interfaces: on the high speed CAN line (with the power unit (brake pump);with the electronic throttle;with the control panel (active type warning lights);with the steering wheel/steering column (steering sensor installation);with the centre floor/passenger compartment (slewing sensor and lateral acceleration sensor installation);engine compartment layout (specific ABS installation).
Operational description - ESP - Fiat PANDA 1.3 JTD 16v
The braking system control unit M051:at pin 2, 3 receives a direct battery power supply from the line protected by fuse F04;at pin 28 receives an ignition-operated supply from the line protected by fuse F42;from pin 26, 9, 6, 8 supplies wheel sensors K070, K071, K075 and K076 respectively;from pin 5, 10, 27, 29 it receives signals coming from wheel sensors K070, K071, K075 and K076 respectively;from pin 21, 19 supplies the longitudinal acceleration sensor K013;at pin 17 receives the signals supplied by the longitudinal acceleration sensor K013;interfaces from pins 15, 16, 18, 20, 37 with the slewing sensor K074;at pin 41 receives the positive signal (with reference to the power supply protected by fuse F42) from the brake pedal switch I030; the same signal is also supplied to the engine management control unit M010 , (pin 68 connector B);at pin 30 receives the positive signal (with reference to the power supply protected by fuse F37) from the brake pedal switch I030; the same signal is also supplied to the engine management control unit M010 , (pin 92 connector B);at pin 33 sends the milometer signal to the body computer node M001 (pin 18 connector D). The same signal is sent via the C CAN to the engine management control unit M010 and to the electric steering control unit M086 (for further details
Switch I030 comprises two internal switches, one normally open (N.A.) type and one normally closed (N.C.) type. In the rest condition (brake pedal not pressed), the switch supplies a positive signal from pin 1; this signal is taken, by means of the short circuiting coupling D097C by the engine management control unit and the braking system control unit. When the brake pedal is pressed the switch I030 switches the sending of the positive signal from pin 1 to pin 2 (with reference to the power supply protected by fuse F37); still via the short circuiting coupling D097C, this signal is sent to the engine management control unit (pin 35 connector B), to the braking system control unit (pin 30), to the body computer node M001 (pin 5 connector B), to the Selespeed gearbox control unit M054 (pin 69 connector B).The ASR function can be switched on using the special switch in the switch control unit H090 (pin 18 connector B) and its deactivation is indicated by an LED coming on.The body computer node M001 converses, via the B CAN, with the instrument panel E050 to switch on the warning light if there is a system malfunction.JUNCTION UNIT
B001A
B001D
B001D
B001D
B001D
B001D
B001D
B001D
FRONT/DASHBOARD COUPLING
D001
D001
D001
D001
D001
D001
D001
SHORT CIRCUITING COUPLING
D097A
D097A
D097A
D097A
D097A
D097B
D097B
D097B
D097B
D097B
D097C
D097C
D097C
D097D
D097E
D097E
D097F
D097G
D097G
D097H
ENGINE CONTROL AND MANAGEMENT SYSTEMS
E5010
E5010
E5010
E5020
E5020
E5020
E5020
E5020
E5020
E5030
E5030
E5030
E5050
IGNITION SWITCH
H001A
H001A
H001A
H001B
BRAKE PEDAL SWITCH
I030
I030
I030
I030
I030
RIGHT FRONT WHEEL SENSOR FOR ABS
K071
K071
K071
LEFT REAR WHEEL SENSOR FOR ABS
K075
K075
K075
BODY COMPUTER
M001A
M001A
M001A
M001B
M001B
M001B
M001C
M001C
M001C
M001C
M001D
M001D
M001E
M001E
M001F
M001F
M001F
M001G
M001H
M001H
M001I
M001L
M001L
M001M
M001M
M001N
M001O
M001O
M001P
Braking system control unit
M051
M051
