Volkswagen Golf / Golf GTI / Jetta. Manual - part 363

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Function 

 

  

   As the control modules are interconnected 

with a data bus wire, always start 
troubleshooting by the Diagnostic Trouble 
Code (DTC) memories of all the control 
modules in the vehicle.  

  

   This occurs in "Automatic test sequence" 

and is activated with key function 00.  

  

   When doing this, check to see if there are 

DTCs stored which may influence the ABS.  

  

   The On Board Diagnostic (OBD) relates to 

the electrical/electronic part of the ABS, in 
other words only malfunctions via the 
electrical connection to the control module 
are recognized (e.g. speed sensor open 
circuit).  

  

   The 47 pin ABS Control Module (w/EDL) -

J104- forms with the hydraulic unit a 
compact unit. The unit is located on the left 
of the engine compartment. The control 
module is equipped with a DTC memory. 
The Data Link Connector (DLC) is located in 
the center console below the heating/air 
conditioning controls.  

  

   The control module recognizes malfunctions 

during vehicle operation and stores them in 
a permanent memory, the contents of which 
remain even during periods of no battery 
voltage.  

ABS Mark 60 On Board Diagnostic (OBD), vehicles from my 10.00

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   Sporadic (irregular) malfunctions will also be 

recognized and stored. But if malfunctions 
affecting the data bus system do not occur again 
within the next 15 vehicle start and driving off 
sequences, or other malfunctions within the next 
50 vehicle start and driving off sequences, they 
will be erased from DTC memory except for the 
malfunction "Control module faulty" (forget-
malfunction counter).  

  

   After switching on the ignition and/or starting the 

engine, the ABS warning light -K47- and the ESP 
control lamp -K155- will light up for approx. 2 
seconds.  

  

   During this period a test sequence (self-check) is 

run in the control module for the following 
functions:  

  

  

 To check if the supply voltage is at least 10.0 

Volt, 

  

  

 To check control module including the valve 

windings, 

  

  

 To check the coding of the control module,  

  

  

 A static check of the speed sensor (no speed 

signal), 

  

  

 If the wheel speed signal is not OK after the car 

has been driven and a speed of approx. 20 
km/h (approx. 13 mph) has been exceeded, the 
ABS warning light -K47- will light up again. 

ABS Mark 60 On Board Diagnostic (OBD), vehicles from my 10.00

01-136

 

  

   Features of 4MOTION  

  

   In order to utilize the engine's maximum 

performance for a test, e.g. on a rolling road 
test bed, the longitudinal acceleration sensor 
-G251- must be switched off 

 

Page 01-

264

 , Initiating basic setting, Display group 

number 040.  

  

   Switch ignition off and on again to reactivate 

the longitudinal acceleration sensor -G251-.  

  

   All-wheel drive vehicles with a Haldex 

coupling are equipped with EDL (Electronic 
Differential Lock).  

  

   Special detail for bleeding brake systems 

with ABS/EDL 

  

   If a chamber in the brake fluid reservoir has 

run empty, basic setting must be performed 
for bleeding the brakes 

 

Page 01-264

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   V.A.G 1551 scan tool or tester VAS 5051 

  

   The On Board Diagnostic must be initiated 

at the commencement of troubleshooting. 
Electrical malfunctions which influence the 
braking characteristics will be stored.  

  

   They can be checked with the V.A.G 1551 

Scan Tool, Vehicles system tester V.A.G 
1552 or Vehicle Diagnosis, Testing and 
Information System VAS 5051.  

  

   The program card in the V.A.G 1551 must 

be at least version 9.0 and in vehicle system 
tester V.A.G 1552, at least version 6.0.  

ABS Mark 60 On Board Diagnostic (OBD), vehicles from my 10.00

01-137

 

  

  

Arrangement of ABS MARK 60 

 

  

  

The brake booster boost is produced 
by vacuum pressure.  

     Distinguishing features:  

1 - 

10" brake booster 

2 - 

Hydraulic unit 

3 - 

Control module, 47-pin (bolted 
to hydraulic unit). Two 4.8 mm 
wide contacts are located at 
each end of the connection. 

ABS Mark 60 On Board Diagnostic (OBD), vehicles from my 10.00