Volkswagen Golf / Golf GTI / Jetta. Manual — part 1026

*Not for vehicles with Climatronic: A DTC entry is made when the malfunction has been
registered continuously for at least 60 seconds.

Instrument cluster through m.y. 1999, On Board Diagnostic (OBD)

13/2/2005

01-18

VAG 1551
print out

Possible cause

Possible effects

Corrective

actions

00771*

Fuel Level
Sensor -G-

Open/Short
circuit to B+

Short to
Ground
(GND)

Open or short circuit in

wiring between Fuel
Level Sensor -G- and
instrument cluster

-G- malfunctioning

Fuel reserve

displayed value
0 ("empty")

- Read
Measuring Value
Block

Page

01-33

- Check for open
or short circuit in
wiring using
wiring diagram.

- Replace -G-

00779**

Outside Air
Temperature

Sensor -G17-

Open/Short
circuit to B+

Short to
Ground
(GND)

Open or short circuit in

wiring between Outside
Air Temperature Sensor -
G17- and instrument
cluster

-G17- malfunctioning

Dashes ( - - - )

appear on
display in
instrument
cluster

- Read
Measuring Value
Block

Page

01-33

- Check for open
or short circuit in
wiring using
wiring diagram.

- Replace -G17-

* A DTC entry is made when the malfunction has been registered continuously for at
least 20 seconds.

**For vehicles with multi-function indicator (MFA) but not with Climatronic

Instrument cluster through m.y. 1999, On Board Diagnostic (OBD)

13/2/2005

01-19

VAG 1551
print out

Possible cause

Possible effects

Corrective

actions

01039*

ECT Sensor
-G2-

Open/Short
circuit to B+

Short to
Ground
(GND)

Open or short circuit in

wiring between ECT
Sensor -G2- and
instrument cluster

-G2- malfunctioning

Engine coolant

temperature (ECT)
gauge needle on
left stop

- Read Measuring
Value Block

Page 01-33

- Check for open
or short circuit in
wiring using
wiring diagram.

- Replace -G2-

65535

Control
module

- Faulty

Control unit with

display in instrument
cluster -J285-
malfunctioning

No display

Malfunction of

display and
warning lamps

- Replace
instrument cluster

Other DTC's If other DTC's are displayed that are not shown in this DTC table,

perform On Board Diagnostic (OBD) of anti-theft immobilizer system
using VAS 5051 Vehicle Diagnostic Testing and Information System.

* A DTC entry "Open circuit/short to positive" is made after the engine has been running
for 30 minutes and the DTC is recognized.

Instrument cluster through m.y. 1999, On Board Diagnostic (OBD)

13/2/2005

01-20

Output Diagnostic Test Mode (DTM)
(function 03)

The Output Diagnostic Test Mode (DTM) is part

of the electrical check. The following components
and systems are checked via Output DTM:

Speedometer

Tachometer

Engine Coolant Temperature (ECT) gauge

Fuel gauge

Brake system warning lamp

Seat belt warning lamp

Buzzer

All liquid quartz displays (LCD): odometer,

multi-function indicator (MFI) or digital clock &
selector lever position display (automatic
transmission)

Engine Coolant Temperature (ECT) & low

coolant indicator warning lamp

Brake pad wear warning lamp (where

applicable)

Fuel reserve warning lamp

Oil pressure warning lamp

Instrument cluster through m.y. 1999, On Board Diagnostic (OBD)

13/2/2005