Volkswagen Jetta / Bora: Electrical System Manual - part 4

Note

Ensure test clamps have a good contact!

– Select point of connection of test terminals with selection

1 - Connected directly to battery.
2 - Connected to external test points in engine compartment.
– Check that the figures given on the battery are correct for the

settings on the battery tester.

– Press start test button

⇒ page 12

The green LED lights up

⇒ page 12

. The test program runs

through automatically. The test result is printed out by the printer

⇒ page 14

– Switch off unit

⇒ page 12

– Remove test terminals.

Note

♦

The test is completed after about 20 seconds.

♦

The result of the test is printed out by the printer.

♦

Perform test once only. Repeating the test falsifies the results.

2.6.3

Table: low-temperature test current

Low-temperature test current in A

EN/ SAE

IEC

⇒

DIN

136 - 17

95 - 124

⇒

80 - 104

178 - 219

125 - 154

⇒

105 - 129

220 - 261

155 - 184

⇒

130 - 154

262 - 303

185 - 214

⇒

155 - 179

304 - 345

215 - 244

⇒

180 - 204

346 - 387

245 - 274

⇒

204 - 229

388 - 429

275 - 304

⇒

230 - 254

430 - 471

305 - 334

⇒

255 - 279

472 - 513

335 - 364

⇒

280 - 304

514 - 555

365 - 394

⇒

305 -329

556 - 597

395 - 424

⇒

330 - 354

598 - 639

425 - 454

⇒

355 - 379

640 - 657

455 - 464

⇒

380 - 389

658 - 675

465 - 474

⇒

390 - 399

676 - 693

475 - 484

⇒

400 - 409

694 - 711

485 - 494

⇒

410 - 419

712 - 729

495 - 504

⇒

420 - 429

730 - 747

505 - 514

⇒

430 - 439

748 - 765

515 - 524

⇒

440 - 449

766 - 783

525 - 534

⇒

450 - 459

784 - 801

535 - 544

⇒

460 - 469

Jetta 2005 ➤ , Bora 2006 ➤

2. Checking battery

EN/ SAE

IEC

⇒

DIN

802 - 819

545 - 554

⇒

470 - 479

820 - 837

555 - 564

⇒

480 - 489

838 - 855

565 - 574

⇒

490 - 499

2) Batteries with a low-temperature test current of 520 A according to DIN can be tested using setting for 499A according to DIN.

2.7

Evaluating test result

Because of the high load on the battery during this test (a high

current flows) the battery voltage drops.
♦ If the battery is OK the voltage value only lowers to the mini‐

mum voltage.

♦ If the battery is defective or has a low charge the battery volt‐

age quickly drops below the minimum voltage.

♦ This low voltage value remains over a long period and the

voltage only increases again slowly after the test has been

completed.

♦ Perform test once only. Repeating the test falsifies the results.

2.7.1

Comments concerning test print out

1 - Measuring range set on tester.
2 - Diagram -arrow- indicates battery condition.
3 - Test result.
4 - Battery voltage during load test.
5 - Vehicle data and date. Must be completed by test person‐

nel.

Note

♦

The print out is required for warranty purposes.

♦

Perform test once only. Repeating the test falsifies the results.

2.7.2

Assessing test results

Battery tester print out

Measure to be performed

Starting power very good

Battery OK

Start output good

Battery OK

Starting power sufficient

Charge battery

⇒ page 15

and repeat battery load test

Starting power poor
Starting power very poor
Not capable of being tested

3) If after battery has been recharged “Starting output sufficient”, “Starting output

poor”, “Starting output very poor” or “Cannot be tested” is shown, the battery

should be renewed.

Jetta 2005 ➤ , Bora 2006 ➤

Charging battery

WARNING

Danger of injury! Observe warning notices and safety regula‐

tions

⇒ page 2

Caution

To prevent damage to the battery and vehicle, the following

should be observed concerning types of battery

⇒ page 1

3.1

Battery charger -VAS 5095 A-

This chapter describes the basic functions of the battery charger

-VAS 5095 A- . For additional information refer to ⇒ Operating

instructions for battery charger -VAS 5095 A- .

Note

♦

Observe ⇒ Operating instructions for battery charger -VAS

5095 A- .

♦

Observe battery manufacture's handling instructions!

3.1.1

Description of battery charger -VAS

5095 A-

Battery charger -VAS 5095- is suitable for charging
♦ Wet batteries (genuine VW batteries from 2004 with transpar‐

ent battery housing and black cover).

♦ Absorbent glass mat batteries (genuine VW batteries from

2004 with black housing).

The battery charger charges without peaks in amperage or volt‐

age. This will not adversely effect the onboard electronics. The

battery can remain in the vehicle while it is being charged and

need not be disconnected.
Battery charger -VAS 5095 A-
1 - ON / OFF switch (0 = charger OFF)
2 - Charging current indicator (I > 12 A)
3 - Charging current indicator, battery partially charged > 90 %
4 - Maintaining charge, lights up green when battery is fully charg‐

ed
5 - Malfunction indicator
6 - Support mode indicator
7 - Support mode/normal mode changer-over switch
8 - Charger cable posts, red terminal “+”, black terminal “-”
9 - Battery type change-over switch (on base of charger unit)

Jetta 2005 ➤ , Bora 2006 ➤

3. Charging battery