Volkswagen New Beetle. Manual - part 755

DIAGNOSTIC TROUBLE CODE (DTC) - ITT MARK 20 IE (17 OF 20) 

DIAGNOSTIC TROUBLE CODE (DTC) - ITT MARK 20 IE (18 OF 20) 

in the wiring  

 

 

z

Perform electrical checks, see ELECTRICAL 

TESTING

 

z

Hydraulic pump -

V64- faulty  

z

If the ABS hydraulic pump -V64- runs free while 

electrical check test step 18 performed, see BRAKE 

LIGHT SWITCH, ADJUSTING , replace ABS 

control module (w/EDL) -J104-

 

z

ABS control module 

(w/EDL)-J104- 

faulty  

z

Replace ABS control module (w/EDL) -J104-

 

 

See ABS CONTROL MODULE AND HYDRAULIC 

UNIT, REMOVING AND INSTALLING ; HYDRAULIC 

UNIT, BRAKE BOOSTER/MASTER CYLINDER -

ASSEMBLY OVERVIEW .

(1)

Type of DTC; this DTC is only recognized above 20 km/h (13 MPH) (carry out test drive).

V.A.G 1551 
printout

Possible cause

Corrective action

01312
Drive train data 
bus faulty

(1)

 

or:

z

ABS control module 

(w/EDL) -J104- incorrectly 

coded  

z

Engine control module 

incorrectly coded  

z

Check control module (w/EDL) -J104-

coding, see CODE CONTROL MODULE 

(FUNCTION 07)

z

Check engine control module coding 

See

 

z

Open circuit, short to 

positive or Ground in the 

wiring  

z

Check wiring and connections using wiring 

diagram 

 

 

z

Perform electrical checks, see 

ELECTRICAL TESTING

Drive train data 
bus faulty

1)

 

Sporadic

z

Ignition/starter switch 

turned too slowly  

z

Erase DTC memory, see ERASE DTC 

MEMORY (FUNCTION 05)

z

No further measures required 

z

Inform customer 

(1)

The DTC "Drive train data bus" will not cause the ABS warning light -K47- or warning light for 
brake system -K118- to light up. The ABS function is retained over the complete range.

V.A.G 1551 print-

 

2003 Volkswagen New Beetle GLS 

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

  

DIAGNOSTIC TROUBLE CODE (DTC) - ITT MARK 20 IE (19 OF 20) 

DIAGNOSTIC TROUBLE CODE (DTC) - ITT MARK 20 IE (20 OF 20) 

out

Possible cause

Corrective action

01314
Engine control 
module 
No communication

 

z

Read measured value block, see READ 

MEASURING VALUE BLOCK 

(FUNCTION 08) display group number 125 

 

z

Open circuit, short to 

positive or Ground in 

data bus wiring  

z

Check wiring and connections of data bus 

wiring using wiring diagram 

 

 

z

Perform electrical checks, see 

ELECTRICAL TESTING

01315
Transmission Control 
Module (TCM)

(1)

 

No communication

 

z

Read measured value block, see READ 

MEASURING VALUE BLOCK 

(FUNCTION 08) display group number 125 

 

z

Open circuit, short to 

positive or Ground in 

data bus wiring  

z

Check wiring and connections of data bus 

wiring using wiring diagram 

 

 

z

Perform electrical checks, see 

ELECTRICAL TESTING

(1)

Vehicles with automatic transmission only.

V.A.G 1551 
printout

Possible cause

Corrective action

01316
Brake control 
module 
No 
communication

z

Open circuit, short circuit to 

positive or Ground in data bus 

wiring  

z

Check data bus wiring and 

connection using wiring diagram 

 

 

z

Perform electrical checks, see 

ELECTRICAL TESTING

V.A.G 1551 
printout

Possible cause

Corrective action

18256
Check Engine 
Control Module 
(ECM) memory

z

DTC in 

ECM  

z

Check engine control module DTC memory 

See for relevant engine code

65535
Control module 

ABS control 

z

Replace control module (w/EDL) -J104-

 

2003 Volkswagen New Beetle GLS 

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

  

ERASE DTC MEMORY (FUNCTION 05) 

Requirements 

z

DTC memory has been checked  

z

Press --> button.  

Indicated on display 

z

Press buttons -0- and -5- to select "Erase DTC Memory" function 05. 

Fig. 38: V.A.G 1551 Scan Tool Display - Erasing DTC Memory - Function 05 (1 Of 6) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Indicated on display 

z

Press -Q- button to confirm input. 

faulty

module (w/EDL) -

J104- faulty

 

 

See ABS CONTROL MODULE AND HYDRAULIC UNIT, 

REMOVING AND INSTALLING ; HYDRAULIC UNIT, 

BRAKE BOOSTER/MASTER CYLINDER - ASSEMBLY 

OVERVIEW .

NOTE:

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

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 39: V.A.G 1551 Scan Tool Display - Erasing DTC Memory - Function 05 (2 Of 6) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Indicated on display 

DTC memory is now erased. 

z

Press --> button. 

Fig. 40: V.A.G 1551 Scan Tool Display - Erasing DTC Memory - Function 05 (3 Of 6) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Indicated on display 

 

2003 Volkswagen New Beetle GLS 

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