SB-10057897-7675
SB-19-0392V2

SERVICE BULLETIN
To:
For the attention of:
Please copy to:

All Dealers
After Sales Manager
Executive Manager
Service Manager
Sales Manager
Warranty
Technician(s)
Parts

Model:

Vanquish, Rapide, DB9, DBS and Virage (Automatic
Transmission only).

VIN Range:

All

Subject:

Ground Cable Modification for the Automatic
Transmission

Reference
SB-19-0392V2
Issued:
02 March 2015

Page 1 of 43

Reason for Version 2 of this Service Bulletin (SB-19-0392)
Version 2 of this Service Bulletin has been issued because we found the connectors in step 72 had the incorrect
connector number. Some text errors have also been corrected. Amendments to this document have a black line
against them in the left-side margin. Please destroy all copies of SB-19-0392 that you have and replace them with
this Service Action SB-19-0392V2.

Reason for this Service Bulletin
If a Customer has one of the vehicles that follow with the 6-speed automatic transmission:


DB9 (all)



DBS



Virage



Rapide (including ‘S’)



Vanquish 13MY onwards,

And the Customer complains that one of the problems that follow has occurred on their vehicle:


Warning Message “GEARBOX FAULT SERVICE REQUIRED”



Cannot easily select gears when parked or driving, by use of the PRND switches



The transmission changes to a different gear or neutral when the PRND switches are used to select a gear



Unexpected gear change when the switches or paddles have not been operated,

Do the steps that follow:
1.

Connect the AMDS to the vehicle.

2.

Do a check for fault codes.

3.

If you find a condition that follows:


There is only a P1712 code logged,



There are no codes logged,



The problem only occurs when the paddles are used for gear selection,

Do the usual diagnostic procedures to find the fault.
Note:

In these conditions, you do not need to do the workshop procedure that follows.

March 2015

Page 1 of 43

Service Bulletin
4.

SB-19-0392V2

If you find one or more of the the codes that follow:


P0705, P2805, P1921, P1797 or P0863.

and it is known or proven that the fault codes have not been caused by an incomplete or edge-push of a
PRND switch, do the test that follows in “PRND Voltage Measurement”.
PRND Voltage Measurement
5.

Set the AMDS datalogger to monitor the signal voltages on PRND1 and PRND2.

6.

Set the ignition to On.

7.

Refer to Table 1. Push and release each PRND button and look at the AMDS to make sure that there is the
correct change in the PRND signal values. If the voltage is 0.02 volts or more higher than the value shown
in Table 1, do the Workshop Procedure that follows below. This procedure will install a new ground wire
connection from the right Powertrain Control Module (PCM) to the Centre Console Module (CCM).
Table 1

Note:

Button

PRND1 Ground

PRND2 Ground

Park (P)

0.45V

2.26V

Neutral (N)

1.08V

2.26V

Drive (D

1.74V

2.26V

Reverse

2.16V

2.26V

None

2.62V

3.71V

Refer to Parts Data for the kit of parts that is available to do this modification.

Workshop Procedure
Part A – Remove the Powertrain Control Module (PCM)
All Models:
1.

Do the battery disconnect procedure (refer to Workshop Manual procedure 14.01.CA).

2.

Do a check of the harness ground points (refer to Service Bulletin SB-18-0385).

3.

Examine the bulkhead ground stud and eyelet assembly.

4.

Undo and remove the ground eyelet attachment nut. Make sure that there is no insulation material near or
around the ground stud or ground eyelets.

5.

Install a new attachment nut for the ground eyelet.

6.

Remove the front right side wheel arch liner (refer to Workshop Manual procedure 01.02.GB).

March 2015

Page 2 of 43

Service Bulletin
7.

SB-19-0392V2

Release the bases of the three fir-tree cable ties
that attach the Powertrain Control Module
(PCM) harness to the PCM bottom bracket (refer
to Figure 1). Do not cut the cable ties.

Figure 1

8.

Release the base of the fir-tree cable tie that
attaches the forward harness to the PCM bottom
bracket (refer to Figure 2). Do not cut the cable
tie.

Figure 2

9.

Release the electrical connector for the side
repeater, from the clip that attaches it to the
PCM bracket (refer to Figure 3).

Figure 3

March 2015

Page 3 of 43

Service Bulletin
10.

SB-19-0392V2

Disconnect the electrical connector from the
indicator side repeater (refer to Figure 4).

Figure 4

11.

Release the forward harness from the fir-tree
clip that attaches it to the body (refer to
Figure 5).

Figure 5

12.

Remove the three bolts that attach the PCM
bottom bracket and PCM to the PCM top
bracket (refer to Figure 6).

Figure 6

March 2015

Page 4 of 43

Service Bulletin
13.

SB-19-0392V2

Remove the bolt that attaches the check-arm
bracket for the front door, to the PCM bottom
bracket (refer to Figure 7).

Figure 7

14.

Release the PCM bottom bracket (refer to
Figure 8).

Figure 8

15.

Disconnect the three electrical connectors from
the PCM (refer to Figure 9).

Figure 9

March 2015

Page 5 of 43

Service Bulletin
16.

SB-19-0392V2

Remove the PCM (refer to Figure 10).

Figure 10

Part B – Remove the Centre Stack
DB9, DBS and Virage Only:
17.

Apply protective tape to the leather trim that surrounds the centre stack.

18.

Use the special tool to release the veneer panel
for the instrument panel (refer to Figure 11).

Figure 11

CAUTION:

19.

DURING THE STEP THAT FOLLOWS, BE CAREFUL WHEN YOU RELEASE THE VENEER
BEZEL FOR THE IP. THE SURFACE FINISH CAN BE EASILY DAMAGED.

Release the veneer bezel from the four clips that
attach it to the IP (refer to Figure 12).

Figure 12

March 2015

Page 6 of 43

Service Bulletin
20.

SB-19-0392V2

Disconnect the electrical connectors from each
of the four transmission control switches (refer to
Figure 13).

Figure 13

21.

Disconnect the electrical connector from the
ignition switch module (refer to Figure 14).

Figure 14

22.

Disconnect the electrical connector from the
ignition switch module (refer to Figure 15).

Figure 15

Note:

Steps 23 and 24 that follow apply to 2014 Model Year onwards vehicles.

March 2015

Page 7 of 43

Service Bulletin
23.

SB-19-0392V2

Disconnect the two electrical connectors from
the navigation display screen (refer to
Figure 16).

Figure 16

24.

Remove the screw that attaches the two tethers
to the veneer bezel (refer to Figure 17).

Figure 17

25.

Remove the veneer bezel (refer to Figure 18).

Figure 18

26.

Remove the centre console (refer to Workshop Manual procedure 01.12.DN).

March 2015

Page 8 of 43

Service Bulletin
27.

SB-19-0392V2

Remove the four screws that attach the centre
stack assembly to the IP (refer to Figure 19.

Figure 19

28.

Move the centre stack assembly to get access to
the electrical connectors (refer to Figure 20.

Figure 20

29.

Disconnect the two electrical connectors from
the Infotainment Control Module (ICM) (refer to
Figure 21).

Figure 21

March 2015

Page 9 of 43

Service Bulletin
30.

SB-19-0392V2

Disconnect the two electrical connectors from
the HVAC control module (refer to Figure 22).

Figure 22

31.

Disconnect the four electrical connectors from
the control switches (refer to Figure 23).

Figure 23

32.

Remove the centre stack assembly (refer to
Figure 24).

Figure 24

Rapide Only:
33.

Apply protective tape to the leather trim that surrounds the centre stack.

March 2015

Page 10 of 43

Service Bulletin
34.

SB-19-0392V2

Use the special tool to release the veneer bezel
for the Instrument Panel (IP) (refer to
Figure 25).

Figure 25

CAUTION:

35.

DURING THE STEP THAT FOLLOWS, BE CAREFUL WHEN YOU RELEASE THE VENEER
BEZEL FOR THE IP. THE SURFACE FINISH CAN BE EASILY DAMAGED.

Release the veneer bezel from the four clips
that attach it to the IP (refer to Figure 26).

Figure 26

36.

Disconnect the electrical connectors from each
of the four transmission control switches (refer
to Figure 27).

Figure 27

March 2015

Page 11 of 43

Service Bulletin
37.

SB-19-0392V2

Disconnect the electrical connector from the
ignition switch module (refer to Figure 28).

Figure 28

38.

Disconnect the electrical connector from the
ignition switch module (refer to Figure 29).

Figure 29

39.

Disconnect the two electrical connectors from
the navigation display screen (refer to
Figure 30).

Figure 30

March 2015

Page 12 of 43

Service Bulletin
40.

SB-19-0392V2

Remove the screw that attaches the two tethers
to the veneer bezel (refer to Figure 31).

Figure 31

41.

Remove the veneer bezel (refer to Figure 32).

Figure 32

42.

Remove the two rubber base inserts from the
cup holders (refer to Figure 33).

Figure 33

March 2015