Volkswagen New Beetle. Manual - part 694

 

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Volkswagen New Beetle. Manual - part 694

 

 

Fig. 59: V.A.G 1551 Scan Tool Display - Checking ABS Brake Light Switch And ABS/EDL 
Function (1 Of 2)
 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Indicated on display 

z

Press -C- button for next display group number entry. 

If the --> button is pressed, buttons -0- and -8- ("Read Measuring Value Block") must be pressed again to 
regain entry. 

Fig. 60: V.A.G 1551 Scan Tool Display - Checking ABS Brake Light Switch And ABS/EDL 
Function (2 Of 2)
 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

MEASURING VALUE BLOCK 3 

Read Measuring Value Block 3

-->

Display group 003

0

 

 

 

Indicated on display

 

2003 Volkswagen New Beetle GLS 

1998-2004 BRAKES On Board Diagnostic (OBD) - New Beetle

  

OUTPUT DIAGNOSTIC TEST MODE (FUNCTION 03) 

Output Diagnostic Test Mode (DTM) allows you to check the function of the hydraulic system and the pump 
motor for incorrect connections or leaks (brake line connections to brake calipers and function of hydraulic 
valves). 

Example of VAG1551 display during output DTM (left-front wheel, FL shown in example): 

Indicated on display 

IFL: Inlet valve Front Left 

VBAT: Battery voltage at valve 

OFL: Outlet valve Front Left 

0V: 0 Volts (no voltage at valve) 

 

 

 

 

Vacant

 

 

 

Vacant

 

 

Vacant

 

Brake light switch: 

z

0 --> Brake pedal not depressed  

z

1 --> Brake pedal depressed  

 
If a -0- is displayed on the VAG1551 display despite a depressed brake pedal, or a -1- is 
displayed on the VAG1551 display without a depressed brake pedal, perform Electrical testing, 
test step No. 4 in VOLTAGE TEST - SWITCH TO 20V DC MEASURING RANGE . There 
is also a possibility that the brake light switch has not been correctly adjusted Adjusting brake 
light switch, see BRAKE LIGHT SWITCH, ADJUSTING

NOTE:

z

All functions which could previously be performed with V.A.G 1551 can 
also be performed with the tester VAS 5051.  

NOTE:

z

The vehicle must be raised until all wheels are free to turn. A second 
technician is required to rotate wheels.  

z

The -C- button can be used to exit the test sequence at any time.  

z

After depressing the brake pedal several times the vacuum in the brake 
booster will be exhausted. For this reason, more pressure must be applied 
to the brake pedal in order to attain the same braking effect.  

z

When the vacuum in the brake booster is exhausted the wheels may not 
lock. Start the engine briefly to build up vacuum in the brake booster.  

 

2003 Volkswagen New Beetle GLS 

1998-2004 BRAKES On Board Diagnostic (OBD) - New Beetle

  

Locked/free: Wheel condition; must be checked by second technician

Fig. 61: V.A.G 1551 Scan Tool Display - Initiating Output Diagnostic Test Mode - Function 03 (1 Of 37) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Indicated on display 

Hydr-P: Hydraulic pump 

Fig. 62: V.A.G 1551 Scan Tool Display - Initiating Output Diagnostic Test Mode - Function 03 (2 Of 37) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Connect VAG1551 scan tool, see VAG1551 SCAN TOOL (ST), CONNECTING AND SELECTING 
FUNCTION
  

z

Switch ignition on.  

z

Press button -1 - for "Rapid data transfer" operating mode.  

z

Press buttons -0- and -3- to insert "Brake Electronics" address word 03, see VAG1551 SCAN TOOL 
(ST), CONNECTING AND SELECTING FUNCTION

 

2003 Volkswagen New Beetle GLS 

1998-2004 BRAKES On Board Diagnostic (OBD) - New Beetle

  

Indicated on display 

z

Press -Q- button to confirm input. 

z

Read control module version in VAG1551 display.  

z

Press --> button. 

Fig. 63: V.A.G 1551 Scan Tool Display - Initiating Output Diagnostic Test Mode - Function 03 (3 
Of 37)
 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Indicated on display 

z

Press buttons -0- and -3- to select "Output Diagnostic Test Mode" function 03. 

Fig. 64: V.A.G 1551 Scan Tool Display - Initiating Output Diagnostic Test Mode - Function 03 (4 
Of 37)
 

NOTE:

During the next procedure steps ABS warning lamp -K47- flashes.

 

2003 Volkswagen New Beetle GLS 

1998-2004 BRAKES On Board Diagnostic (OBD) - New Beetle

  

 

 

 

 

 

 

 

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