1998 VOLKSWAGEN BORA wiring

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V.A.G 1551
print-out Possible cause
Repair
01130
ABS
operation
Implausible
signal
1)
Electrical interference from
other sources (high
frequency radiation e.g.
non-insulated ignition cable)- Erase DTC memory
- Perform test drive at more than 20 km/h
(13 mph)
- Check DTC memory again


Open circuit, short to
positive or Ground in the
wiring - Check wiring and connections using wiring
diagram
- Perform electrical checks Page 01
-102
If the malfunction occurs again:


ABS Control Module
(w/EDL) -J104- faulty
Repair Manual, Brake System, Repair
Group 45; Hydraulic unit, brake
booster/brake master cylinder - Assembly
overview; Removing and installing control
module and hydraulic unit - Replace ABS control module (w/EDL) -
J104-
1) Type of DTC; this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 30из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551
print-out Possible cause
Repair
01276
ABS hydraulic
pump
-V64-
Signal outside
tolerances
1)
ABS hydraulic pump
-V64-connector to
control module faulty- Perform output Diagnostic Test Mode (DTM)
Page 01
-74

Open circuit, short to
positive or Ground in
the wiring - Check wiring and connections using wiring
diagram

- Perform electrical checks from Page 01
-102

ABS hydraulic pump
-V64- faulty - If the ABS hydraulic pump -V64- runs free while
electrical check test step 18 performed Page
01-102 , replace ABS control module (w/EDL) -
J104-

ABS control module
(w/EDL) -J104- faulty
Repair Manual, Brake System, Repair Group 45;
Hydraulic unit, brake booster/brake master cylinder
- Assembly overview; Removing and installing
control module and hydraulic unit - Replace ABS control module (w/EDL) -J104-
1) Type of DTC; this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 31из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551
print-out Possible cause
Repair
01312
Drive train data
bus faulty
1)


or:
ABS control module (w/EDL) -
J104- incorrectly coded

Engine control module
incorrectly coded
Repair group 01 for relevant
engine code - Check ABS control module
(w/EDL) -J104- coding Page 01
-
58
- Check engine control module
coding

Open circuit, short to positive or
Ground in the wiring - Check wiring and connections
using wiring diagram

- Perform electrical checks Page
01-102
Drive train data
bus faulty
1)

Sporadic
Ignition/starter switch turned
too slowly - Erase DTC memory Page 01-56
- No further measures required
- 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.
Стр. 32из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551 print-out
Possible cause
Repair
01314
Engine control module
No communication
- Read measured value block
Page 01
-61 display group number
125

Open circuit, short to
positive or Ground in data
bus wiring - Check wiring and connections of
data bus wiring using wiring
diagram
- Perform electrical checks
Page 01
-102
01315
Transmission Control
Module (TCM)
1)
No communication
- Read measured value block
Page 01-61 display group number
125

Open circuit, short to
positive or Ground in data
bus wiring - Check wiring and connections of
data bus wiring using wiring
diagram
- Perform electrical checks
Page 01
-102
1) Vehicles with automatic transmission only.
Стр. 33из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551 print-
out Possible cause
Repair
01316
Brake control
module
No
communication
Open circuit, short circuit to
positive or Ground in data bus
wiring - Check data bus wiring and
connection using wiring diagram
- Perform electrical checks
Page 01
-102
Стр. 34из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Checking data bus wiring

Display group number 125

- Press keys 1, 2 and 5

- Confirm entry with key Q.
Read measured value block
125
1 2 3 4
There are always 4 display zones -arrows-
in the measured value block. Decoding the
individual values in display zones 1 to 4 can
be read from the following tables.
Read measured value block
125
Engine 1 4WD 1 Gear. 1
Indicated on display: (vehicle stationary)
Press C key for the next display group
number entry.
If the key is pressed, keys 0 and 8 for
work sequence "Read measured value
block" must be pressed again afterwards to
regain entry.
Стр. 52из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Read measured value block
125 Display group number: 125
Engine
1 AWD
1 Gear.
1
Indicated on display (example)

Vacant

Data bus connection for transmission
1)

1 Data bus connection is available.
0 Data bus connection is not available.3)

Data bus for all-wheel drive2)
1 Data bus connection is available.
0 Data bus connection is available.

Data bus for engine

1 Data bus connection is available.
0 Data bus connection is not available.
1) Vehicles with automatic transmission only.

Incorrect transmission control module or incorrect transmission control module coding.

Transmission control module faulty.
Repair Group 01 for relevant transmission code.
2) All-wheel drive vehicles with Haldex coupling only.
3) Data bus connection is interrupted or data bus wires are interchanged.
Electrical Wiring Diagrams, Troubleshooting & Component Locations binder.
Стр. 53из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Multi-pin connector with contact
assignment


Note:
All contacts not listed are currently not
assigned and must never be connected to
other components!
Contact assignment of connectors for
voltage supply and On Board Diagnostic
(OBD) with V.A.G 1551 Scan Tool
Contact
4 = Ground (terminal 31)
Contact
16 = Positive (terminal 30) to S12
Contact
7 = K wire to contact 7 of multi-
pin connector T25 of ABS
control module (w/EDL) -
J104-
Contact assignment of connector T25
wiring harness/ABS control module
(w/EDL) -J104-
Стр. 5из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check