Volkswagen Golf / Golf GTI / Jetta. Manual — part 1072

27-31

CAUTION!

Before beginning repairs on the electrical
system

Switch off all electrical consumers.

Switch ignition off and remove ignition
key.

- Connect tester cable clamps to battery terminal

MCR 340V Instruction Manual Tester leads

must be securely fastened and make proper
contact with the battery posts.

Clamps must have a good contact with battery

terminals.

- Set tester to "Warranty Test"

MCR 340V

Instruction Manual.

- Perform battery battery test by setting load

current on tester according to battery (DIN)
capacity

MCR 340V Instruction Manual.

Note:

Use print function of MCR 340V where test

results are required for warranty claims.

Battery, checking

13/2/2005

27-32

Battery test results

Battery tester

display / print-

out

Required action

Good Battery

none

Good -
Recharge

Charge battery where

necessary

1)

Page 27-34

Use inCHARGE

Charge battery

1)

Page 27-34

Replace Battery

Replace battery

2)

Bad Cell -
Replace

Replace battery

2)

1)

Repeat battery battery test after recharging

battery.

2)

Replace battery with fastened fuse holder

Page 27-52

2)

Replace battery with clipped fuse holder

page 27-56

Battery, checking

13/2/2005

27-33

A battery is in good condition if the voltage

measured by the tester during the battery
test drops gradually and does not fall below
a specified value. The rate of decrease
varies and depends on the battery capacity
and cold cranking amp rating ("cold cranking
amps" is the rated ability of the battery to
perform at low temperatures and with high
loads i.e.: high compression engines).

A battery is either faulty or in a low state of

charge if the voltage measured during the
battery test drops quickly and falls below the
specified voltage.

After performing the battery test, a faulty

battery will remain below the specified
voltage and may only recover very slowly
over a long period of time. The no load
voltage (

Page 27-27

) is never reached.

Such batteries no longer have sufficient

reserve and load capacity and must be
replaced.

Battery, checking

13/2/2005

27-34

Battery, charging

WARNING!

Prior to handling or servicing batteries, read,
understand and observe the Warning and
Safety measures for lead-acid batteries

Page 27-4

.

Battery charger, connecting

WARNING!

Danger of explosion!

Batteries produce explosive gasses while
being charged.

Keep open flames and sparks away and DO
NOT smoke near batteries.

The battery charger MUST be turned off
when connecting or disconnecting the
cables at the battery.

Battery cell caps must NOT be removed
while charging.

"Boosting" a sulfated battery a high charging
rate can cause an explosion.

Ensure that battery is charged in a well
ventilated area.

Precision tools must not be kept in the same
room where batteries are being charged.
Tools may corrode due to chemical reaction.

Battery, charging

13/2/2005