Electrical/Electronic Components

components and installing locations





1 - ABS hydraulic unit -N55
^ Located on left side of engine compartment.
^ The hydraulic unit consists of:
^ ABS return flow pump -V39
^ Can be checked using "Guided fault finding" with VAS 5051
^ Valve block (contains in/outlet valves).
^ The ABS return flow pump -V39- and valve block must not be separated from one another
2 - ABS control module (w/EDL) -J104-
^ Located on the hydraulic unit on left side of engine compartment.
^ Can be checked using "Guided fault finding" with the VAS 5051
^ Do not disconnect connector (26 pin) before checking of Diagnostic Trouble Code (DTC) memory. First switch ignition off then separate connector.
3 - ABS hydraulic unit for ABS/EDL or ABS/EDL with ASR -N55
^ Located on left side of engine compartment.
The hydraulic unit consists of:
^ ABS return flow pump -V39-
^ Can be checked using "Guided fault finding" with VAS 5051
^ Valve block (contains the in/outlet valves).
^ The ABS return flow pump -V39- and valve block must not be separated from one another
Distinguishing features:
Hydraulic unit can only be distinguished externally by different part numbers.
4 - Control module for ABS/EDL or ABS/EDL with ASR -J104-
^ Located on hydraulic unit on left side of engine compartment.
^ Can be checked using "Guided fault finding" with the VAS 5051
^ Do not disconnect connector (26 or 31 pin) before checking of (DTC) memory. First switch ignition off then separate connector.
Distinguishing features:
Hydraulic unit can be distinguished externally by different part numbers.
With ASR wiring harness connection for ABS control module (w/EDL) -J104- has 5 additional contacts (31 pin).
5 - Traction control indicator light -K86
^ Location: In the instrument cluster
Function:
6 - Warning light for brake system -K11 8
^ Location: In the instrument cluster
7 - ABS warning light -K47
^ Location: In the instrument cluster
8 - Brake system vacuum pump -V192
^ Not in all vehicles
^ Located on left side of engine compartment.
^ Checked by On Board Diagnostic (OBD) in engine control module
9 - Brake booster pressure sensor -G294-
^ Not in all vehicles
^ Location: in vacuum hose on brake servo
^ Checked by OBD in engine control module
10 - Brake light switch -F
^ Adjusting Page 4682
^ Can be checked using "Guided fault finding" with the VAS 5051
11 - Data Link Connector (DLC)
^ Location to model year 2000: below cover next to parking brake lever
^ Location from model year 2001: below stowage compartment, driver's side
12 - Impulse wheel for right and left front speed sensors
13 - Right/left front ABS wheel speed sensor G45-/-G47
^ Can be checked using "Guided fault finding" with the VAS 5051
14 - Right/left rear ABS speed sensor-G44-/-G46-
(Figure for Front Wheel Drive (FWD))
^ Can be checked using "Guided fault finding" with the VAS 5051
15 - Impulse wheel for right and left rear speed sensors