V271503 2016076
Service Bulletin Details
Public Details for: V271503 2016076
Technical bulletin: battery, discharged, diagnosis for excessive static current draw
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Technical Bulletin Model(s) Year Eng. Code Trans. Code VIN Range From VIN Range To 2000-2015 All All All All All except Routan Condition 27 15 03 March 12, 2015 2016076 Supersedes Technical Bulletin V271105 dated December 15, 2011 to include additional models and model year applicability. Battery, Discharged, Diagnosis for Excessive Static Current Draw Technical Background One or more of the following symptoms is possible. • Discharged battery • Engine does not start because of low battery voltage • Voltage display in the combination instrument displays too low • "Low battery" fault codes in various control modules Production Solution N/A. Service Tip: Refer to Elsa for other Technical Bulletins that apply to specific vehicles with discharged batteries. These Technical Bulletins provide information about intermittent faults and correct battery testing /charging procedures. Note: Perform ALL STEPS, to systematically test for faults and to avoid repeat repairs. Note: The power supply to vehicle must not be cut off. DO NOT perform terminal 30 reset. DO NOT remove or disconnect battery, battery cables or fuses. Page 1 of 4 © 2015 Volkswagen Group of America, Inc. All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher. Technical Bulletin Check the fault memory. • Compare control units on the fault memory print-out with vehicle equipment (PR numbers). Are all necessary control units listed on the print-out? Any control units not listed may be faulty and could be indications for the further fault finding. • Check which non-genuine parts are installed, e.g. tow bar, animal protection, radio, DVD, etc. If an increased closed-circuit current is found, check these components first. Step 1: Verify Battery Condition 1. Connect Midtronics INC-940 or GRX3000VAS to battery. 2. Check and/or charge battery based on applicable Technical Bulletin. 3. If INC-940 or GRX3000VAS test fails battery, replace battery before continuing. Step 2: Verify Sleep State Current 1. Connect 50 amp current clamp to appropriate VAS Diagnostic tool. 2. Calibrate the current clamp. 3. Connect current clamp to negative battery cable with arrow pointing away from battery. Tip: Current flows out of the battery to the chassis of the vehicle 4. Close all doors, trunk, or hood latch so vehicle control units detect all doors closed. 5. Arm vehicle anti-theft system with remote. Tip: • If vehicle has easy entry handles then it is necessary to keep clear of all handles to avoid bus communication/wakeup message. • On vehicles equipped with air suspension, after engine is turned off, the system will stay in standby for up to five minutes 6. Observe sleep state current draw after vehicle is left untouched for TWO HOURS. Vehicle: Phaeton All other models Nominal sleep current: 50 mA 40 mA 7. If after two hours the vehicle exceeds maximum sleep state current draw, proceed to Step 3: Consuming Circuit Isolation. If vehicle does not exceed maximum sleep state current draw, perform a long term (overnight) measurement test. Record the long term measurement using MIN/MAX setting of scan tool. Page 2 of 4 © 2015 Volkswagen Group of America, Inc. All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher. Technical Bulletin Tip: Periodic spikes in current draw are normal Step 3: Consuming Circuit Isolation Tip: Due to the state of the CAN Bus communications in the vehicle, it is no longer acceptable to pull each individual fuse one at a time to try and identify which circuit is consuming current. Removal/ reinsertion of a fuse while vehicle is in a sleep state may wake the bus of the vehicle, and invalidate the test. Identifying "consuming" circuits must be done by measuring a voltage drop across fuse and aligning with the value in matrix located at end of this document. Starting at interior fuse boxes, perform the following tasks: Tip: Use VAS multimeter function, Fluke 83 multimeter, or equivalent. • Use "mV" scale on meter • Measure voltage drop across fuse by placing the positive lead on one side of the fuse and negative lead on other side. • Take absolute value of reading of voltage drop (ignore negative signs) and then reference voltage drop chart to determine how much current the circuit is currently consuming. See Identifying Current Consumption with Matrix attachment. • Check all fuses until fuse with approximate excessive current draw is identified Identification of component: 1. Once fused circuit is identified, use service repair and wiring diagram information in Elsa to identify all components on circuit. 2. Disconnect components from the circuit one by one and allow sleep current to stabilize after each elimination. 3. Measure vehicle current consumption and voltage drop across fuse once again. If within normal range, as specified in the table (see Current Consumption Matrix attachment), the component with excessive consumption is identified. 4. Repeat steps above until component is identified causing excessive current draw. Page 3 of 4 © 2015 Volkswagen Group of America, Inc. All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher. Technical Bulletin Warranty Information only. Required Parts and Tools No Special Parts required. No Special Tools required. Additional Information All part and service references provided in this Technical Bulletin are subject to change and/or removal. Always check with your Parts Dept. and Repair Manuals for the latest information. Page 4 of 4 © 2015 Volkswagen Group of America, Inc. All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher. Identifying Current Consumption with Matrix • Measurement Mini mV 5 0.1 6 0.2 12 0.3 18 0.4 24 0.5 30 Measured voltage drop across fuse What is needed: o Measured voltage drop across fuse in mV o Fuse type o Fuse rating Mini 7.5 10 20 30 40 50 Mini StandardStandardStandardStandardStandard Standard 30 10 5 10 15 20 25 14 7 13 23 30 47 62 13 123 28 27 45 61 94 185 43 20 40 68 91 141 57 26 54 91 122 188 246 71 33 67 113 152 235 308 Example: • Measured voltage drop = .3 mV • Fuse type = Standard • Fuse rating = 5 A Current consumption through circuit = 20 mA Page 1 of 3 Fuse type Fuse rating 20 mA Current Consumption Matrix Measurement mV 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Mini 5 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120 126 132 138 144 150 156 162 168 174 180 186 192 198 204 210 216 222 228 234 240 246 252 258 264 270 276 282 288 294 Mini 7.5 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 169 179 189 199 209 219 229 239 249 259 269 279 289 299 309 319 329 339 349 359 369 379 389 399 409 419 429 439 449 459 469 479 488 Mini 10 14 28 43 57 71 85 99 114 128 142 156 171 185 199 213 227 242 256 270 284 298 313 327 341 355 369 384 398 412 426 441 455 469 483 497 512 526 540 554 568 583 597 611 625 639 654 668 682 696 Standard Standard Standard Standard Standard Standard 5 10 15 20 25 30 7 13 23 30 47 62 13 27 45 61 94 123 20 40 68 91 141 185 26 54 91 122 188 246 33 67 113 152 235 308 40 80 136 183 281 370 46 94 158 213 328 431 53 107 181 244 375 493 59 120 204 274 422 554 66 134 226 305 469 616 73 147 249 335 516 677 79 161 272 366 563 739 86 174 294 396 610 801 92 187 317 427 657 862 99 201 340 457 704 924 106 214 362 487 751 985 112 228 385 518 797 1047 119 241 407 548 844 1109 125 254 430 579 891 1170 132 268 453 609 938 1232 139 281 475 640 985 1293 145 294 498 670 1032 1355 152 308 521 701 1079 1417 158 321 543 731 1126 1478 165 335 566 762 1173 1540 172 348 589 792 1220 1601 178 361 611 823 1267 1663 185 375 634 853 1313 1725 192 388 656 884 1360 1786 198 401 679 914 1407 1848 205 415 702 944 1454 1909 211 428 724 975 1501 1971 218 442 747 1005 1548 2032 225 455 770 1036 1595 2094 231 468 792 1066 1642 2156 238 482 815 1097 1689 2217 244 495 837 1127 1736 2279 251 509 860 1158 1782 2340 258 522 883 1188 1829 2402 264 535 905 1219 1876 2464 271 549 928 1249 1923 2525 277 562 951 1280 1970 2587 284 575 973 1310 2017 2648 291 589 996 1341 2064 2710 297 602 1019 1371 2111 2772 304 616 1041 1401 2158 2833 310 629 1064 1432 2205 2895 317 642 1086 1462 2252 2956 324 656 1109 1493 2298 3018 Page 2 of 3 Measurement mV 5 5.1 5.2 5,3 5,4 5,5 5,6 5,7 5,8 5,9 6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 9 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 10 Mini 5 300 306 312 318 324 330 336 342 348 354 360 366 372 378 384 390 396 402 408 414 420 426 432 438 444 450 456 462 468 474 480 486 492 498 504 510 516 522 528 534 540 546 552 558 564 570 576 582 588 594 600 Mini 7.5 498 508 518 528 538 548 558 568 578 588 598 608 618 628 638 648 658 668 678 688 698 708 718 728 738 748 758 768 778 788 798 807 817 827 837 847 857 867 877 887 897 907 917 927 937 947 957 967 977 987 997 Mini 10 711 725 739 753 767 782 796 810 824 838 853 867 881 895 909 924 938 952 966 981 995 1009 1023 1037 1052 1066 1080 1094 1108 1123 1137 1151 1165 1179 1194 1208 1222 1236 1251 1265 1279 1293 1307 1322 1336 1350 1364 1378 1393 1407 1421 Standard Standard Standard Standard Standard Standard 5 10 15 20 25 30 330 669 1132 1523 2345 3080 337 683 1154 1554 2392 3141 343 696 1177 1584 2439 3203 350 709 1200 1615 2486 3264 357 723 1222 1645 2533 3326 363 736 1245 1676 2580 3387 370 749 1268 1706 2627 3449 376 763 1290 1737 2674 3511 383 776 1313 1767 2721 3572 390 790 1335 1798 2768 3634 396 803 1358 1828 2814 3695 403 816 1381 1858 2861 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