DescriptionThis device allows maximum ease of manoeuvring during parking; with reverse gear engaged, it indicates if the driver is approaching an obstacle that could be outside his field of vision, as illustrated in the diagram below.The system operates in accordance with the ultrasound 'sonar' principle: four ultrasound transducers are located in the rear bumper. They send signals to a control unit, which processes this information and determines the distance of possible obstacles.A loudspeaker controlled by the control unit emits an intermittent tone, proportional to the distance of the obstacle detected.The control unit is activated when reverse gear is engaged: under these conditions it energizes the transducers and sends them a signal request, and receives response signals from them.The control unit emits a signal with intermittent tone: the frequency of this sound increases as the bumper comes close to an obstacle: when the calculated distance falls below 25 cm, the sound becomes acute and constant.If the distance measured from the obstacle increases, or if the driver disengages reverse gear, the sound stops. If the distance measured from the obstacle remains constant, the sound ceases after about 3 seconds. For more details and information on the operation of the system, Characteristic of working principle 5580H parking obstacle detection device The signal that the reversing light has been switched on 3360738SeeE2022REVERSING LIGHTS is managed by the Body Computer which forwards this information to the parking sensor control unit via the CAN network. The system is supplied via a circuit protected by a specific fuse in the underfacia control unit.
Functional description Parking sensor control unit M84 is supplied - pin 1 of connector A - from the INT line protected by fuse F49 of control unit B2 . The control unit is connected via CAN line to all other nodes on the network via pins 7 and 14; in this way it receives the reverse engaged signal, amongst other signals. Pin 8 is earthed while pins 2 and 10 are connected to parking sensor buzzer P44 . Pin 5 receives an inhibition signal if a trailer is connected. via coupling D733360770SeeE2050TRAILER WIRING . The four parking sensors K97 are connected to connector C of control unit M84 : pin 1 supplies a reference earth, pin 6 the power supply, pins 5, 3, 2 and 4 are connected to sensors K97A , K97B , K97C and K97D .
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the negative battery terminal.1. Remove the junction unit protective cover.192009560
5505A35
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213363098-5530B56BATTERY DRIP TRAY COVER- R.R.Disconnect the battery negative terminal.3363361-7040A44facia lh side cover - r r1. Disconnect the front electrical connectors of the junction unitcomplete with body computer.2. Unscrew the retaining bolts.3. Remove from its seating the junction unit complete with bodycomputer.4. Disconnect the rear electrical connectors of the junction unitcomplete with body computer.2027438
5505A36
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Separate the junction unit (1a) from the body computer (1b),by releasing the retaining lugs (1c).2027440
5505A41
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213363098-5530B56BATTERY DRIP TRAY COVER- R.R.Disconnect the battery negative terminal.3363151-5580C18air bag module - r+r . 769- 4110A16 steering wheel - r r for replacement or checks forversions with airbag and manual gearbox with hydraulic selection . 1. Disconnect the electrical connectors (1a) and remove the controlunit (1b) from its seating.2027441
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Disconnect the electrical connectors (1a) and (1b).2. Undo the fixing bolts (2a) and remove the door node (2b).2027444
767 It is not possible toorder a single lock barrel or to order barrels using a single partcode. When ordering barrels, observe the special procedure illustrated 3363161See assembly5580E anti-theft device .
5520A18
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213363098-5530B56BATTERY DRIP TRAY COVER- R.R.Disconnect the battery negative terminal.3363357-7040A26steering column trim - r+r1. Disconnect the electrical connectors of the ignition block (1a)and Cruise Control (1b).2. Release the retaining clips on the ignition switch contact block.2027470
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