Technical product information
Topic
Market
area
Brand
Transaction
No.
Level
Status
Release
date

Transmission communication DTC's (Numerous) - W12 engine
Australia E04 Bentley rest Asia and Australia (6E04),China 723 Volkswagen (Anhui) Automotive CO (6723),China 796 VW Import
Comp. Ltd (Vico), Beijing (6796),Germany E02 Bentley rest Europe (6E02),Japan E03 Bentley Japan (6E03),Korea, (South) E08
Bentley South Korea (6E08),United Arab Emirates E06 Bentley Middle East and Africa (6E06),United Kingdom E01 Bentley UK
(6E01),United States E05 Bentley USA and rest America (6E05)
Bentley
2059068/6
EH
Released for publishing
03-Oct-2023

New customer code
Object of complaint
vehicle service -> vehicle diagnosis -> guided fault finding
electrical power, electric system, data transfer -> data bus systems
power transmission -> power distribution, power flow -> power flow
electrical power, electric system, data transfer -> power supply

Complaint type
Position
control units, services -> with event log entry
component / consumables
functionality -> without function / defect
functionality

Vehicle data
New Continental GT/C and New Flying Spur - W12 engine
Sales types
Type
3S31BB
3S31BB
3S31BB
3S31BB
3S31BB
3S31BB
3S31BB
3S31EB
3S31EB
3S31EB
3S31EB
3S41BB
3S41BB
3S41BB
3S41BB
3S41BB
3S41BB
3S41EB
3S41EB
3S41EB
3S41EB
ZG21BB
ZG21BB
ZG21BB
ZG21BB
ZG21BB
ZG26BB
ZG26BB

INTERNAL

MY
2018
2019
2020
2021
2022
2023
2024
2021
2022
2023
2024
2019
2020
2021
2022
2023
2024
2021
2022
2023
2024
2020
2021
2022
2023
2024
2023
2024

Brand Designation Engine code Gearbox code Final drive code
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*

Documents
Document name
master.xml

INTERNAL

Technical product information
Transmission communication DTC's (Numerous) - W12 engine

Transaction No.: 2059068/6
Release date: 03-Oct-2023

Customer statement / workshop findings
Customer statement
Drive system fault active on DIP (Figure 1)

Figure 1
Workshop findings
Various and/or numerous Transmission control module (TCM) communication DTC’s logged

Technical background
Loose pins within the transmission link harness to the Mechatronic unit for dual clutch gearbox -J743- connections can lead to various
transmission communication and hardware based DTC’s

Production change
Not applicable

Measure
Ensure the ignition is switched off for the duration of this procedure
1) Remove the left hand front wheel arch liner - Refer to Repair manual Rep.Gr 66
•

Referring to Figure 2 - Disconnect the three connectors shown

Extreme care MUST be taken when conducting pin/terminal grab checks and resistance checks as damage can easily be
caused to the pins/terminals
2) Once disconnected carry out pin/terminal grab checks on all three male and female connections
NOTE: All resistance values shown within this TPI are approximate, tolerances may vary depending on the quality/type and age of the multimeter and or leads used
•

In the event the main vehicle harness pins are not to specification the applicable pins should be replaced

•

Should any issues be found with the transmission link harness and/or pins – the harness should be replaced

•

In the event the pins are to specification or the applicable repairs have been done (for example – Harness replacement or pin replacement)
- Reconnect all three connectors

INTERNAL

Figure 2
3) Remove the rear subframe support – Rep.Gr 40 (Figure 3)

Figure 3
4) Disconnect the connections (Figure 4 - Arrows) from the Mechatronic unit for dual clutch gearbox -J7435) Gain access and disconnect the transmission control module plug T58g - Refer to Repair manual Rep.Gr 37
•

Referring to the applicable current flow diagram and Figure 5 and 6 - Carry out resistance and pin/terminal grab checks on all disconnected
connections from the T58g connector to T20az and T20ay on the harness.

INTERNAL

Figure 4

Figure 5

Figure 6
When conducting the T58g resistance checks from pin 5 to the relevant fuse (Refer to the applicable Wiring diagram) please
ensure the correct fuse board is located

INTERNAL

TIP: For best results the fuse should be removed and checked from the correct pin to T58g, once the check has been done
refit the fuse
SK = LHD
SP = RHD
Connector TV48 (Figure 7) MUST also be disconnected when conducting the pin 55 to TV48 resistance check TIP: once the
check has been done reconnect TV48

Figure 7
6) Should all the resistance checks be within specification – Reconnect T20az and T20ay and referring to Figure 8 (Connector T58g) carry out
the requested pin resistance checks
NOTE: Referring to Figure 8 - The resistance value for checks on PIN’s 29 to 16 (Transmission fluid temperature sensor) will
vary depending on the actual transmission fluid temperature
Connector T58

Figure 8

INTERNAL

Should any issues be found with the Mechatronic unit for dual clutch gearbox -J743- pin connections/transmission control
module plug (T58g) pin connections or resistance values - Please raise a DISS query and await feedback before carrying out
any further work

Warranty accounting instructions
Warranty type:
910 or 110
Service ID number:
9797
Damage type:
0040
Labour
Time to conduct wiring checks
Labour operation code: 38 85 01 05
Time:
160 Time units
Time to replace link harness
Labour operation code: 38 85 55 55
Time
20 Time units

Parts information
Part number Description

Quantity

Refer to ETKA Link harness 1

INTERNAL