SB-10054744-1223

Reference:

Date:

ITB14-009a

January 27, 2014

VOLUNTARY SERVICE CAMPAIGN
2014 Q50; DIRECT ADAPTIVE STEERING SYSTEM
CONTROL MODULE REPLACE, REPROGRAM, AND RECALIBRATE
The Claims Information and Figure R1 in this bulletin have been amended. No other changes have been made.
Please discard previous versions of this bulletin.

CAMPAIGN ID #:

P4204

APPLIED VEHICLES: 2014 Q50 Hybrid (V37)
Check Service COMM to confirm campaign eligibility.
 There are four bulletins with different campaign ID numbers for this campaign.
 Each bulletin is applicable to specific vehicles depending on vehicle options.
 Make sure the correct bulletin (Campaign ID #) is being used.

INTRODUCTION
Infiniti is conducting a Voluntary Service Campaign on certain specific Model Year 2014 Q50 Hybrid vehicles to
replace and reprogram the Direct Adaptive Steering (DAST) control modules, and recalibrate the DAST system.
This Service will be performed at no cost to the customer for parts or labor.

IDENTIFICATION NUMBER
Infiniti has assigned identification number P4204 to this campaign. This number must appear on all
communication and documentation of any nature dealing with this campaign.

DEALER RESPONSIBILITY
Dealers are to correct each vehicle falling within the range of this campaign that enters the service department.
This includes vehicles purchased from private parties or presented by transient (tourist) owners and vehicles in
a dealer’s inventory.

Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe
that a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti dealer to determine if this
applies to your vehicle.
1/35

Repair Overview

Check Service Comm to confirm the vehicle you are working on
requires campaign ID # P4204.

The Service Procedure has 5 parts:
PART 1: Replace all Three DAST Control Modules, page 3:
 DAST 1 - Steering Angle Main Control Module
 DAST 2 - Steering Angle Sub Control Module
 EPS/DAST 3 - Steering Force Control Module

PART 2: Configure all Three DAST Control Modules, page 4:
 This must be performed 3 separate times to configure DAST
1, DAST 2, and EPS/DAST 3.

PART 3: Reprogramming Procedure, page 10:
 This includes three separate control module reprograms;
DAST 1, DAST 2, and EPS/DAST 3.

PART 4: Calibration and Confirmation Procedure, page 26:
 This includes the following: DAST CALIBRATION (MODE1),
ADJUST STEERING ANGLE SENSOR NEUTRAL
POSITION, Self-Diagnosis Check, and Confirmation of
EPS/DAST 3 ANGLE 1.

PART 5: Calibrate AVM Camera, page 33:

END

2/35

ITB14-009a

SERVICE PROCEDURE
PART 1: Replace all Three DAST Control Modules.
1. Replace all three DAST Control Modules (see Figure R1):
DAST 1 - Steering Angle Main Control Module.
 For R&R information, refer to the Service Manual > Section STC > Direct Adaptive Steering > Steering
Angle Main Control Module.
DAST 2 - Steering Angle Sub Control Module.
 For R&R information, refer to the Service Manual > Section STC > Direct Adaptive Steering > Steering
Angle Sub Control Module.
NOTE: The washer bottle does not need to be removed. Suspend it with string while replacing DAST 2
control module.
EPS/DAST 3 - Steering Force Control Module.
 For R&R information, refer to the Service Manual > Section STC > Direct Adaptive Steering > Steering
Force Control Module.

A = EPS/DAST 3 - Steering Force Control Module
B = DAST 2 - Steering Angle Sub Control Module
C = DAST 1 - Steering Angle Main Control Module

Figure R1
2. After all three DAST Control Modules are replaced; go to PART 2: Configure all Three DAST Control
Modules on the next page.
3/35

ITB14-009a

PART 2: Configure all Three DAST Control Modules
NOTE: PART 2 must be performed 3 separate times to configure the control modules for DAST 1, DAST 2,
and EPS/DAST 3.
1. Connect CONSULT III plus (C-III plus) VI to the vehicle.
2. Turn the ignition ON (engine OFF / not Ready).
3. Turn ON the CONSULT PC.
4. Open C-III plus and wait for the VI to be recognized.
5. Select Re/programming, Configuration.

Plus VI is
recognized
Step
5

Figure A1

4/35

ITB14-009a

6. Check the box for Confirmed Instructions, and then select Next.

Step
6

Figure A2
7. Select Q50 or Q50 Hybrid and 2014, or Automatic Selection(VIN).


If Automatic Selection (VIN) is selected, or the screen in Figure 3 does no display, skip to step 9.

8. Select Select.

This works,
too

Step
7

Step
8

Figure A3

5/35

ITB14-009a

9. Verify the VIN or Chassis # matches that of the vehicle.


If the correct VIN is displayed, select Confirm.

Verify
here

If OK, select
Confirm

Figure A4
10. Select Confirm again.

Step
10

Figure A5

6/35

ITB14-009a

11. Use the page arrows to scroll and select the correct control module for configuration.
Make sure to configure the control modules in this order:
DAST 1, then DAST 2, and then EPS/DAST 3
NOTE: DAST 1 and DAST 2 are shown in Figure A6; EPS/DAST 3 is not shown.

Step
11

Scroll with
arrows

Figure A6
12. Select Manual Configuration.

Step
12

Figure A7

7/35

ITB14-009a

13. Select (highlight) the correct DATA PART NO. (Use the scroll arrows as needed.)
 Use the table below to determine the correct DATA PART NO.
14. Select Next.

Step 13:
Select correct
number

Examples

Step
14

Figure A8
DATA PART NO.
AWD
2WD
With
Without
Active Lane Control
Active Lane Control

Q50 Hybrid

2WD
With
Active Lane Control

AWD
Without
Active Lane Control

DAST1

28505 4GF3E

28505 4GF4A

28505 4GF4B

28505 4GF4C

DAST2

28505 4GF8E

28505 4GF9A

28505 4GF9B

28505 4GF9C

EPS/DAST3

285H0 4GF3E

285H0 4GF4A

285H0 4GF4B

285H0 4GF4C

NOTE: Vehicles with Active Lane Control will have a Lane Camera Unit mounted above the inside rearview
mirror.

8/35

ITB14-009a

15. Confirm the DATA PART NO. is correct.
16. Select OK.

Step
15

Step
16

Figure A9
17. Wait for Transfer Data (Write Configuration) to complete.
18. Select END.

Step
18

Figure A10
19. Repeat the configuration procedure in the correct order; DAST 2 (2nd) and then EPS/DAST 3 (3rd).
20. After all 3 DAST control modules have been configured, go to PART 3: Reprogramming Procedure on
the next page.

9/35

ITB14-009a

PART 3: Reprogramming Procedure
NOTE: PART 3 must be performed 3 separate times to reprogram the control modules for DAST 1, DAST
2, and EPS/DAST 3.
1. Before continuing, it is IMPORTANT to make sure:


ASIST on the CONSULT PC has been synchronized (updated) with the current date.



All CONSULT related software updates (if any) have been installed.
NOTE: The CONSULT PC automatically gets all reprogramming software during ASIST
synchronization.

CAUTION:


Connect the GR8 to the vehicle 12 volt battery and set to ECM power supply mode.
If the vehicle battery voltage drops below 12.0V or rises above 13.5V during reprogramming,
the DAST may be damaged.



Be sure to turn OFF all vehicle electrical loads.
If a vehicle electrical load remains ON, the DAST may be damaged.



Be sure to connect the AC Adapter.
If the CONSULT PC battery voltage drops during reprogramming, the process will be interrupted
and the DAST may be damaged.



Turn off all external Bluetooth® devices (e.g., cell phones, printers, etc.) within range of the
CONSULT PC and the VI. If Bluetooth® signal waves are within range of the CONSULT PC
during reprogramming, reprogramming may be interrupted and the DAST may be damaged.

2. Once all ASIST and CONSULT related updates have been performed, attach the CONSULT PC to the
vehicle.


Connect the plus VI to the CONSULT PC with the USB cable.



Connect the AC adapter to the CONSULT PC.

10/35

ITB14-009a

3. Turn ON the CONSULT PC, and then open CONSULT III plus (C-III plus).
NOTE: Make sure all applications other than C-III plus are closed.
4. Turn the ignition ON (engine OFF / not Ready).
 Press the ignition switch twice without depressing the brake pedal.


The meter and gauges will illuminate.
CAUTION: Do Not start the engine, the DAST may be damaged. (For Hybrid vehicles, make sure the
Ready light is OFF.)
NOTE: Make sure ALL accessories are turned OFF.

5. Erase all stored DTCs as follows:
a.
b.
c.
d.

Wait for the plus VI to be recognized.
Select Diagnosis (All Systems) and Confirm.
Wait for system call to complete.
Erase all DTCs.

6. Go to Re/programming, Configuration.
a. Select the Home button, and then select YES to return to the screen shown in Figure 1.
b. select Re/programming, Configuration.

Plus VI is
recognized

Step
5b

Step
6b

Figure 1

11/35

ITB14-009a

7. Check the box for Confirmed Instructions, and then select Next.

Step
7

Figure 2
8. Select Q50 or Q50 Hybrid and 2014, or Automatic Selection(VIN).


If Automatic Selection (VIN) is selected, or the screen in Figure 3 does no display, skip to step 10.

9. Select Select.

This works,
too

Step
8

Step
9

Figure 3

12/35

ITB14-009a

10. Verify the VIN or Chassis # matches that of the vehicle.


If the correct VIN is displayed, select Confirm.

Verify
here

If OK, select
Confirm

Figure 4

11. Select Confirm again.

Step
11

Figure 5

13/35

ITB14-009a

12. Use the page arrows to scroll and select the correct control module to be reprogrammed.
Make sure to reprogram the control modules in this order:
DAST 1, then DAST 2, and then EPS/DAST 3
NOTE: DAST 1 and DAST 2 are shown in Figure 6; EPS/DAST 3 is not shown.

Step
12

Scroll with
arrows

Figure 6
13. Wait for System Call to complete, and then select Reprogramming.

Step
13

Figure 7

14/35

ITB14-009a

14. When you get to the screen shown in Figure 8, confirm reprogramming applies as follows:
A. Find the DAST Part Number and write it on the repair order.
NOTE: This is the current DAST Part Number. DAST 1 is shown; DAST 2 and DAST 3 are similar.

Current Part
Number

If a match,
select Save

Figure 8
B. Compare the P/N you wrote down to the numbers in the Current Part Number column of Table A
below:


If there is a match, reprogramming applies. Continue with the reprogramming procedure.



If there is not a match, reprogramming does not apply.
NOTE: If there is no match for DAST 1, there will be no match for DAST 2 or DAST 3. You can
stop. This reprogramming does not apply, or it has already been done.

Table A
MODEL

2014 Q50/Q50 Hybrid

CONTROL MODULE

CURRENT PART NUMBER:

DAST 1

28505 – 4GA1B, 4GA1C, 4GA1D

DAST 2
EPS/DAST 3

28505 – 4GA6B, 4GA6C, 4GA6D
285H0 – 4GA5B, 4GA5C, 4GA5D

C. If there is a part number match as specified above, Select Save, and then continue with the
reprogramming procedure on the next page.

15/35

ITB14-009a

15. Read the precautions on the C-III plus screen (use page arrow as needed). After reading, select
Confirmed instructions, and then select Next.

Step
15

Figure 9
NOTE:
 In some cases, more than one new P/N for reprogramming is available.
 If more then one P/N is available, the screen in Figure 10 will display.
 Select and use the reprogramming option that does not have the message “Caution! Use ONLY
with ITBXX-XXX”.


If you get this screen and it is blank (no reprogramming listed), it means there is no reprogramming
available for that control module.

DAST 1

Figure 10
16/35

ITB14-009a

16. Verify the Current Part Number matches the Part Number written down in step 14, and then select Next.

Verify P/Ns
above, then
select Next

Figure 11
17. If the screen in Figure 12 appears, first select Delete, then Confirm, and then Other Operation.


This will erase the Saved Data List and restart the reprogram from step 12. You must go back
to step 12.



If no Saved Data List is stored, Figure 13 on the next page will be displayed.

Step
17

Figure 12

17/35

ITB14-009a

18. Confirm battery voltage is correct, and then select Next.
NOTE: Battery voltage must stay within the specified range to make the indicator turn green.

Monitor 12V
battery voltage
here

Must be
“Green” before
selecting Next
Step
18

Figure 13
19. With battery voltage OK (green), select Start.
 The reprogramming process begins when Start is selected.
NOTE: For reprogramming to continue, vehicle 12V battery voltage must stay within 12 volts and 13.5
volts.

Monitor 12V
battery voltage
here

Step
19

Figure 14

18/35

ITB14-009a

IMPORTANT: Until the reprogramming has completed: