Volkswagen Golf / Golf GTI / Jetta. Manual — part 160

01-182

Measured value (data) blocks

Safety precautions

Observe following if test and measuring

instruments are required during a road test:

Test and measuring instruments must be

secured to rear seat and operated by a 2nd
person from this location.

If test and measuring instruments are operated

from front passenger's seat and the vehicle is
involved in an accident, there is a possibility that
the person sitting in this seat may receive
serious injuries when the airbag is triggered.

Measured value (data) blocks

01-183

Read measured value (data)
block

The measured values in the
functions read measured value block
and basic setting are described
during the individual component test.
This table serves only as an
overview.

Special tools and equipment

Note:

All functions which could previously
be performed with VAG 1551/1552
can also be performed with the
vehicle diagnostic, testing and
information system VAS 5051.

Test requirements

VAG 1551 scan tool (or VAG

1552 vehicle system tester) with
VAG 1551/3 adapter cable

The fuses must be OK.

Measured value (data) blocks

01-184

The main fuses must be OK.

The battery voltage must be at

least 11.5 V.

Ground (GND) connection

between engine and body must
be OK.

All electrical devices, e.g. lights

and rear window defroster must
be switched off.

If the vehicle is equipped with air

conditioning, this must be
switched off.

Selector lever must be in

position "P" or "N" on vehicles
with an automatic transmission.

Coolant temperature must be at

least 85 C,

display group 1,

display zone 2.

Three Way Catalytic Converter

(TWC) temperature must be at
least 380 C,

display group

46, display zone 2.

No Diagnostic Trouble Codes

(DTCs) must be stored in DTC
memory

Page 01-23

, DTC

memory, checking and erasing.

Measured value (data) blocks

01-185

Work sequence

- Connect VAG 1551 scan tool ((VAG 1552) and

select Engine Control Module (ECM) with the
"Address word" 01. When doing this the engine
must be running at idle: (Connecting scan tool
and selecting Engine Control Module (ECM)

Page 01-12

).

Rapid data transfer

HELP

Select function XX

Indicated on display:

- Press buttons -0- and -8- for function "Read

measured value (data) block" and confirm entry
with -Q- button.

Read measured value (data) block

Input display group number XXX

Indicated on display:

Note:

The display group number 1 is an example, to
illustrate the sequence.

- Select required display group number.

- Press buttons -0-, -0- and -1- for "Display group

number 1" and confirm entry with -Q- button.

Measured value (data) blocks