1998 VOLKSWAGEN JETTA Service Manual

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V.A.G 1551
print-out Possible cause
Repair
00290
Left rear
ABS wheel
speed
sensor -
G46-
Open circuit, short to positive or
Ground, or loose contact in
connections between left rear ABS
wheel speed sensor -G46- and
ABS Control Module (w/EDL) -
J104- - Check wiring and connections using
wiring diagram
- Perform electrical checks Page
01-102

Left rear ABS wheel speed sensor
windings -G46- faulty

Damaged rotor or left rear ABS
wheel speed sensor -G46-
Repair Manual, Brake System,
Repair Group 45; Removing and
installing parts of ABS system on front
and rear axles - Check left rear ABS wheel speed
sensor -G46- and rotor for damage
- Replace rotor/left rear ABS wheel
speed sensor -G46-
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-
Стр. 26из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551
print-out Possible cause
Repair
00290
Left rear ABS
wheel speed
Sensor -G46-
Signal outside
tolerances
1)
Open circuit, short to positive or
Ground, or loose contact in
connections between left rear ABS
wheel speed sensor -G46- and ABS
Control Module (w/EDL) -J104- - Check wiring and
connections using wiring
diagram
- Perform electrical checks
Page 01
-102

Electrical interference from other
sources (high frequency radiation e.g.
non-insulated ignition cable) - Read measured value block
Page 01
-61 Display group
number 001

Damaged rotor or left rear ABS wheel
speed sensor -G46-


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 left rear ABS wheel
speed sensor -G46- and rotor
for damage
- Replace rotor/speed sensor
1) Type of DTC; this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 27из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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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