engine VOLKSWAGEN JETTA 1998 Workshop Manual

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V.A.G 1551 print-
out Possible cause
Repair
00290
Left rear ABS
wheel speed
sensor -G46-
Mechanical
malfunction
1)
Excessive air gap
between left rear ABS
wheel speed sensor -
G46- and rotor (signal
not OK.) Repair Manual, Brake System, Repair
Group 45; Removing and installing parts of
ABS system on front and rear axles - Check installation of left rear ABS wheel
speed sensor -G46- and rotor
- Read measured value block Page 01-
61 Display group number 002
- Perform output Diagnostic Test Mode
(DTM) Page 01
-74
If the malfunction occurs again:

Outlet valve in ABS
hydraulic unit -N55-
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 hydraulic unit -N55-
1) Type of DTC; this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 28из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551 print-
out Possible cause
Repair
00668
Vehicle voltage
terminal 30
Signal outside
tolerances
Open circuit, short to positive
or Ground in the wiring - Check wiring and connections
using wiring diagram
- Perform electrical checks
Page 01
-102
01044
Control module
incorrectly coded
ABS Control Module (w/EDL) -
J104- incorrectly coded

Coding bridge in multi-pin
connector has open or short
circuit - Check ABS Control Module
(w/EDL) -J104- coding Page 01-58
- Check wiring and connections
using wiring diagram
- Perform electrical checks
Page 01
-102
Стр. 29из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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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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V.A.G 1551
print-out Possible cause
Repair
18256
Check Engine
Control Module
(ECM) memory
DTC in ECM
Repair Manual, Fuel Injection & Ignition, Repair
Group 01 for relevant engine code - Check engine control module DTC memory
65535
Control module
faulty 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-
Стр. 35из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Diagnostic Trouble Code (DTC)
memory, erasing and ending output


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

Test requirements:

DTC memory checked Page 01-28 .

1. Erasing DTC memory

-
Press key.
Rapid data transfer HELP
Select function XX Indicated on display
- Press keys -0- and -5-; 05 enters "Erase
DTC memory" function.
Rapid data transfer Q
05 - Erase DTC memor
y
Indicated on display
- Confirm entry with Q key
Rapid data transfer
DTC memory is erased!
Indicated on display
-
Press key.
Rapid data transfer HELP
Select function XX Indicated on display
Стр. 36из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Warning!
DTC memor
y was not interrogated.
Indicated on display
Note:
Adhere exactly to test sequence: First
check DTC memory, then erase
2. Ending output
- Press keys -0- and -6-, to end output.
Rapid data transfer Q
06 - End output Indicated on display
- Confirm input with Q key.
Rapid data transfer HELP
Select function XX Indicated on display
ABS warning light -K47- and warning light
for brake system -K118- must go out after
approx. 2 seconds. - Switch ignition off.
- Disconnect V.A.G 1551 Scan Tool at
Data Link Connector (DLC).
- Switch ignition on.
Стр. 37из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program