00518
Throttle valve potentiometer -G69-
Signal outside tolerance
Wiring open or short circuit
Control unit for engine or throt‐
tle valve potentiometer -G69-
(in throttle valve control part or
in accelerator pedal positioner -
G79-) defective
- Observe notes on =>Page
If this fault is indicated, the engine
control unit self-diagnosis must
always be performed
=> Repair group 01 for relevant
engine code
If additionally faults:
00638 or 01312 or 01314
are displayed, these must be rec‐
tified first
Read measured value block
numbers 001 and 003
Output on printer
V.A.G 1551
Possible cause of fault
Rectifying fault
00529
Wiring open circuit
- If additionally faults:
01312 or 01314
are displayed, these must be rectified
first
Check wiring and connectors accord‐
ing to current flow diagram, including
Data bus wiring
Speed information missing
- Read measured value block =>page
; display group numbers 003
Check engine control unit
=> Repair group 01 for relevant en‐
gine code
00532
Battery defective
- Test battery voltage
=> Repair group 27
Supply voltage
Insufficient system voltage for valves - Read measured value block =>page
; display group number 002
V.A.G 1551 print-out
)
Possible cause of fault
Rectifying fault
00545
Wiring open or short circuit
- If additionally the faults:
01312 or 01314
are displayed, these must be
rectified first
Check wiring and connectors
according to current flow dia‐
gram, including Data bus wiring
Engine/gearbox electrical connection
Open circuit1)
Short to earth1)
Open circuit/short to earth1)
No engine/gearbox control
unit connection
The signal for influencing the
ignition timing point is not
transferred or transferred er‐
roneously between engine
and gearbox control unit
- Read measured value block
1) One of these displays appears in addition to relevant component.
V.A.G 1551 print-out
(=> Page
Possible cause of fault
Rectifying fault
Golf 1998 ➤
Automatic gearbox 01M self-diagnosis - Edition 10.1997
24
01 - Self-diagnosis, Electrical check
