V011231 2023591

Technical Bulletin
Model(s)
Year
Jetta, Jetta
Wagon
2009
Golf, Jetta, Jetta
SportWagen
2010-2013
Passat
2012-2013
Touareg
2009-2010
Touareg
2011-2013
Beetle
2013
Eng. Code
Trans. Code
VIN Range From
VIN Range To
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
2.0L TDI
(CBEA)
2.0L TDI
(CJAA)
2.0L TDI
(CKRA)
3.0L TDI
(CKRA)
3.0L TDI
(CNRB)
2.0L TDI
(CJAA)
Condition
01 12 31 October 24, 2012 2023591 Supersedes T. B. V011015 dated November 10, 2010 to add additional text
and model year applicability.
TDI Clean Diesel I/M (Inspection Maintenance) Testing Issues due to Readiness Not Set
DTCs were recently erased from the vehicle’s engine control module (ECM).
A Volkswagen TDI clean diesel is not ready for I/M (Inspection Maintenance) testing due to readiness codes not
being fully set.
Tip:
This does not indicate any technical problems with the vehicle, only that more driving may be necessary to set full
OBD readiness.
Certain environmental conditions and customer driver profiles may extend the drive time required to fully set
readiness on TDI clean diesel vehicles. Fully setting the DPF monitoring function requires a cycle of building soot
and burning the soot off during a regeneration process.
Tip:
If possible, advise customer not to service vehicle directly before I/M inspection. If the readiness bits are reset,
this can create a condition where extensive driving is required prior to setting full readiness.
Page 1 of 8
© 2012 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
Technical Background
Some readiness codes on TDI clean diesel vehicles require special driving conditions to be set. If DTCs have
been recently erased from the vehicle’s ECM, it may take additional driving under different conditions to fully set
OBD readiness parameters.
MVB 89 (on non-UDS protocol ECM’s) will store correct data concerning OBD readiness. Figure 1 illustrates how
to manually read OBD readiness codes.
Figure 1. An example of a possible MVB 89 reading. Actual values will depend on vehicle tested and OBD
readiness status.
Tip:
Information on the readiness status on UDS protocol vehicles is available by reading the Mode 1 – Mode 10 data
in the OBD section of the scan tool.
Page 2 of 8
© 2012 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
Additional Information:
Interpreting Bit Values:
MVB89 is displayed as an 8-bit value. Depending on which diagnostic tester is used, the measurement value may
be displayed as follows: „1010 0100“. All positions in the measurement value are described in bits, where Bit0 is
the rightmost position and Bit7 is the leftmost position.
Example:
MVB89/4 = 1000 0011
Bit0
1
Test NMHC catalyst monitoring (1 = not complete; 0 = complete)
Bit1
1
Test NOx/SCR aftertreatment monitoring (1 = not complete; 0 = complete)
Bit2
0
optional
Bit3
0
Test Boost pressure system monitoring (1 = not complete; 0 = complete)
Bit4
0
optional
Bit5
0
Test Exhaust gas sensor monitoring (1 = not complete; 0 = complete)
Bit6
0
Test PM filter monitoring (1 = not complete; 0 = complete)
Bit7
1
Test EGR system monitoring (1 = not complete; 0 = complete)
MVB 89 (EOBD Status 1)
MVB 89/1
MVB 89/2
Monitor status since
Monitor Status since
DTCs cleared DATA A DTCs cleared DATA B
MVB 89/3
MVB 89/4
Monitor Status since
DTCs cleared DATA
C
Monitor Status since
DTCs cleared DATA
D
" MVB 89/1" Describes whether DTCs are stored and how many
_000 XXXX
# of DTCs stored in this ECU
X000 0001
1 DTCs stored
X000 0010
2 DTCs stored
X000 0011
3 DTCs stored
....
......................
X000 1000
8 DTCs stored
0XXX XXXX
MIL-Lampe off
1XXX XXXX
MIL-Lampe on
Page 3 of 8
© 2012 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
"MVB 89/2" Describes which functions are supported and the fuel type
Bit0
Support: Misfire monitoring (1 = supported; 0 = not supported)
Bit1
Support: Fuel system monitoring (1 = supported; 0 = not supported)
Bit2
Support: Comprehensive component monitoring (1 = supported; 0 = not supported)
Bit3
Compression ignition monitoring = Diesel
Bit4
Test Misfire monitoring (1 = not complete; 0 = complete)
Bit5
Test Fuel system monitoring (1 = not complete; 0 = complete)
Bit6
Test Comprehensive component monitoring (1 = not complete; 0 = complete)
Bit7
optional
" MVB 89/3" Describes which monitors are supported on this vehicle
Bit0
Support: NMHC catalyst monitoring (1 = supported; 0 = not supported)
Bit1
Support: NOx/SCR after-treatment monitoring (1 = supported; 0 = not supported)
Bit2
optional
Bit3
Support: Boost pressure system monitoring (1 = supported; 0 = not supported)
Bit4
optional
Bit5
Support: Exhaust gas sensor monitoring (1 = supported; 0 = not supported)
Bit6
Support: PM filter monitoring (1 = supported; 0 = not supported)
Bit7
Support: EGR system monitoring (1 = supported; 0 = not supported)
" MVB 89/4" provides the readiness status of the SUPPORTED systems from MVB 89/3
Bit0
Test NMHC catalyst monitoring (1 = not complete; 0 = complete)
Bit1
Test NOx/SCR after-treatment monitoring (1 = not complete; 0 = complete)
Bit2
optional
Bit3
Test Boost pressure system monitoring (1 = not complete; 0 = complete)
Bit4
optional
Bit5
Test Exhaust gas sensor monitoring (1 = not complete; 0 = complete)
Bit6
Test PM filter monitoring (1 = not complete; 0 = complete)
Bit7
Test EGR system monitoring (1 = not complete; 0 = complete)
Production Solution
No Production Solution required.
Page 4 of 8
© 2012 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
Service
1. To check the correct status of OBD readiness, refer to MVB 89 and the supplemental information in the
Technical Background section (applies to non-UDS protocol vehicles). For ECMs with UDS protocol, readiness
status can be obtained by reading the Mode 1 – Mode 10 data within the OBD section of the scan tool.
2. If any OBD system indicates incomplete monitoring (“1” shown in Byte 4) with no DTCs stored in the ECM, no
repair is necessary.
Tip:
There is no need to repair any vehicle system due to readiness not being set. Repair work is required only if there
is a relevant DTC stored within the ECM and the MIL is illuminated. Ignore pending DTCs.
Tip:
Do not reset the ECM unless a DTC is saved in memory and the MIL is illuminated. Ignore pending DTCs.
Resetting the ECM will erase the readiness codes and additional driving will be required to set the readiness
codes.
3. The vehicle requires additional driving to complete the OBD readiness checks. Drive the vehicle until all
required monitoring systems indicate complete readiness before attempting emissions testing. Do not send a
customer to I/M testing until the readiness meets the minimum state requirements.
4. Contact the VW Technical Helpline (TAC) if there are difficulties setting readiness on a TDI clean diesel vehicle.
Procedure:
Required conditions for running this procedure:
Switch OFF accessories (ex. Heated seats, rear defroster, climate control, lights, etc.).
No fault entries recorded in the Engine Control Module (ECM).
Driving profile requires approximately 60-90 minutes.
General procedure in order to achieve “Readiness” (diagnostic checks complete)
The engine should be running (leave ignition key “on) during the entire procedure so that the driving profile is not
extended unnecessarily.
Some of the bits described in the table may be set by driving the vehicle a certain way. In this case, the
corresponding test procedure steps can be skipped.
Procedure for Diesel Particulate Filter (DPF) Regeneration
Only one DPF regeneration is necessary per driving cycle. This means, if points 1-7 need to be carried out, only
one DPF regeneration is required.
In order to carry out regeneration:
Page 5 of 8
© 2012 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
Start adaptation channel 13 (DPF service regeneration) with security access. The DPF light switches ON and
stays ON for the entire time during regeneration. If the light switches OFF, then the regeneration process is
completed.
During regeneration, the vehicle needs to be driven at constant speed (50-70 mph or 80-120 km/h), preferably
using cruise control over a stretch of highway or country road. Periods of vehicle acceleration or coasting should
be avoided.
Note:
Obey all local and state traffic laws.
Description of Table 2
The column “NO.” shows an optimal sequence for conducting the readiness vehicle profile split into individual
“readiness categories”. The “Number” stands for a particular “readiness category”, and the “Letter” stands for a
“subcategory” which needs to be set in order to test the “readiness category”.
The column “MVB 89 Ok = 0” describes the “readiness category”. This bit = 0 when this category has
achieved readiness. The “subcategories” belonging to this “readiness category” no longer need to be
carried out.
The column “MVB 86 Ok = 1” describes the readiness “subcategory”. This bit = 1 after the “category” has been
tested. The “subcategories” no longer need to be tested when the “readiness category” bit for the particular
“subcategory” has already been set.
The column “procedure” describes the required vehicle profile which is necessary to set the bits in the “readiness
category” or in the “subcategory.
Table 1: Description of Readiness categories
PiD01 readiness categories since SAE-J1979
(mai 2007 (new))
PiD01 readiness description before SAE-J1979
(mai 2007)
1.
Misfiring monitoring
Misfire monitoring
2.
PM filter monitoring
Oxygen sensor heater monitoring
3.
EGR system monitoring
EGR system monitoring
4.
NMHC catalyst monitoring
Catalyst monitoring
5.
NOx/SCR after-treatment monitoring
Heated catalyst monitoring
6.
Exhaust gas sensor monitoring
Oxygen sensor monitoring
7.
Boost pressure system monitoring
Secondary air system monitoring
No.
Page 6 of 8
© 2012 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
Table 2: Readiness-Bits and Driving Procedure
NO.
MVB 89 Ok = 0 MVB 86 Ok = 1
Procedure
1a
89/2 Bit 4
-
Monitor must be restarted and idle for 45 seconds
2a
89/4 Bit 6
86/2 Bit 7
Drive for 30 minimum 30 sec. at 3000 rpm in 4 -5 gear
2a
89/4 Bit 6
86/2 Bit 6
Drive for 30 minimum 30 sec. at 3000 rpm in 4 -5 gear.
Additionally “A total of” roughly 140 sec. dynamic driving
(coasting/acceleration transmissions), Gas pedal position at max.
50%, (vehicle profile interruptions are allowed).
2b
89/4 Bit 6
86/2 Bit 4
DPF regeneration and drive: The vehicle must be driven for 5 min.
at a constant speed (50-70 mph, 80-120 km/h), preferably using
cruise control over a stretch of highway or country road. Phases of
acceleration or coasting are to be avoided in order to set MVB 86/2
Bit 4.
2b
89/4 Bit 6
86/2 Bit 5
DPF regeneration and drive: When MVB 100/1 > 575°C (1073°F)
(EGT3, drive for 150 additional seconds then, if possible,
immediately pull over, stop, and let the vehicle idle for 60 sec. until
MVB 86/2 Bit5 is set. Finally, continue with regeneration.
2c
89/4 Bit 6
-
DPF regeneration until the light goes out.
3a
89/4 Bit 0
-
DPF regeneration until the light goes out.
4a
89/4 Bit 7
86/1 Bit 7
MVB 100/2 > 300°C (573°F). Maintain this condition for about 60
sec. (avoid coasting).
4b
89/4 Bit 7
86/1 Bit 3
Drive at constant speed for 20 sec. in 3 gear at 1800 rpm.
4c
89/4 Bit 7
86/1 Bit 6
Coast for 8 sec. when motor is warm.
5a
89/4 Bit 1
-
6a
89/4 Bit 5
86/3 Bit 0
Test run in order to warm up exhaust system
6a
89/4 Bit 5
86/3 Bit 1
Test run in order to warm up exhaust system (2 min. no coasting
6a
89/4 Bit 5
86/4 Bit 0
Test run in order to warm up exhaust system
6a
89/4 Bit 5
86/4 Bit 1
Test run in order to warm up exhaust system (2 min. no coasting
6b
89/4 Bit 5
86/3 Bit 4
Leave vehicle idling for 30 sec.
6b
89/4 Bit 5
86/4 Bit 4
Leave vehicle idling for 30 sec.
th
th
th
th
1
1
1
1
rd
Drive 30-40 min. at constant speed, (50-70 mph, 80-120 km/h), in 5th
6 gear.
Page 7 of 8
© 2012 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
6c
89/4 Bit 5
86/3 Bit 2
Moderate acceleration up to 2500 rpm, then quickly release gas
pedal.
6c
89/4 Bit 5
86/4 Bit 2
Moderate acceleration up to 2500 rpm, then quickly release gas
pedal.
6d
89/4 Bit 5
86/3 Bit 3
Coasting phase at 3000 rpm in 4 gear (min. 10 sec.)
6d
89/4 Bit 5
86/4 Bit 3
Coasting phase at 3000 rpm in 4 gear (min. 10 sec.)
6e
89/4 Bit 5
86/3 Bit 5
Drive 30-45 min, at constant speed, (50-70 mph, 80-120 km/h), in 5th
6 gear.
6e
89/4 Bit 5
86/4 Bit 5
Drive 30-45 min, at constant speed, (50-70 mph, 80-120 km/h), in 5th
6 gear.
7a
89/4 Bit 3
-
Drive 30-45 min, at constant speed, (50-70 mph, 80-120 km/h), in 5th
6 gear.
1
th
th
= carry out DPF regeneration. See part 3: Procedure for DPF Regeneration
Note:
During winter conditions, the setting of the readiness flag for Nox after-treatment MVB 89/4 Bit 1 will be delayed. In
this case, the vehicle must be driven for a much longer period.
Warranty
Information Only.
Required Parts and Tools
No Special Parts required.
Tool Description
Tool No:
Midtronics Battery Tester/Charger
InCharge 940 (INC-940)
VAS Diagnostic Tool
VAS-PC, 5051B, 5052A, 6150X
(Base CD V19.01.00 and Brand DVD V19.18.00 or
higher)
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 8 of 8
© 2012 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.