NHTSA ID Number: 11014066
Manufacturer Communication Number: ITB22-038D
TSB/Document Date: 2025-02-10
Summary
TURBOCHARGER REPLACEMENT PROCEDURE APPLIED ENGINES: VR30DDTT IF YOU CONFIRM One or both turbochargers require replacement. ACTION 1. Replace the affected turbocharger(s). Refer to the SERVICE PROCEDURE in this bulletin for the updated procedure. IMPORTANT: You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to successfully completing this repair. 2. Refer to step 212 in the SERVICE PROCEDURE to confirm if the ECM needs to be reprogrammed. 2016-2024 Q50 and 2017-2021 Q60 will require ECM reprogramming at the end of this SERVICE PROCEDURE. 3. If the ECM part number is in Table A (page 61 and 63), reprogram the ECM. IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to successfully completing this repair.
Classification:
Reference:
EM22-007D
Date:
ITB22-038D
February 4, 2025
TURBOCHARGER REPLACEMENT PROCEDURE
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.
APPLIED VEHICLES:
2016-2024 Q50 (V37)
2017-2022 Q60 (CV37)
APPLIED ENGINES:
VR30DDTT
IF YOU CONFIRM
One or both turbochargers require replacement.
ACTION
1.
Replace the affected turbocharger(s).
Refer to the SERVICE PROCEDURE in this bulletin for the updated procedure.
IMPORTANT: You MUST closely follow the entire SERVICE PROCEDURE as it
contains information that is essential to successfully completing this repair.
2.
Refer to step 212 in the SERVICE PROCEDURE to confirm if the ECM needs to be
reprogrammed.
3.
2016-2024 Q50 and 2017-2021 Q60 will require ECM reprogramming at the end
of this SERVICE PROCEDURE.
If the ECM part number is in Table A (page 61 and 63), reprogram the ECM.
IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you
will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it
contains information that is essential to successfully completing this repair.
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. HINT: If you believe that a described condition may apply to a particular vehicle, DO NOT
assume that it does. See your Infiniti retailer to determine if this applies to your vehicle.
1/67
SERVICE PROCEDURE
Remove Driveline
IMPORTANT: The following Figures are of an AWD vehicle; 2WD is similar.
1.
Place the vehicle on a lift that will allow the drivetrain to be removed.
2.
Remove the Engine Cover.
3.
Refer to the ESM: REPAIR > ENGINE > ENGINE MECHANICAL > REMOVAL
AND INSTALLATION > ENGINE COVER
Remove the Cowl Top Cover RH and Cowl Top Cover LH.
Refer to the ESM: REPAIR > BODY EXTERIOR, DOORS, ROOF & VEHICLE
SECURITY > EXTERIOR > REMOVAL AND INSTALLATION > COWL TOP
4.
Disconnect the battery cable from the negative terminal.
5.
Remove the cover from the battery positive terminal.
6.
Disconnect the battery cable from the positive terminal.
7.
Release the fuel pressure.
f
To avoid the risk of death or severe personal injury, work in a well-ventilated area to
prevent gasoline vapors from accumulating and to prevent their possible ignition.
Refer to the ESM: DIAGNOSIS > ENGINE > ENGINE CONTROL SYSTEM >
BASIC INSPECTION > ENGINE CONTROL SYSTEM > FUEL PRESSURE
CHECK
2/67
ITB22-038D
8.
Disconnect the wiring harness connector shown in Figure 1.
9.
Roll up the wiring harness dust boot (Figure 1).
Wiring harness
connector
Dust boot
Figure 1
10.
Disconnect the Engine Control
Harness connector from the Engine
Room Harness connector (Figure 2),
located under the dust boot.
Engine Control Harness to Engine
Room Harness connectors
Figure 2
11.
Disconnect the wiring harness connector shown in Figure 3.
12.
Located directly behind the battery.
Detach the two (2) engine control harness mounting clips (Figure 3).
Wiring harness
connector
Wiring harness
mounting clips (2)
Figure 3
3/67
ITB22-038D
13.
Detach the Engine Control Harness
grommet from the bulkhead.
Engine Control
Harness grommet
Figure 4
Vacuum Hose 1
14.
Vacuum piping
Disconnect Vacuum Hose 1 from the
vacuum piping (Figure 5), and then
detach its grommet from the bulkhead.
Grommet
Figure 5
15.
Disconnect the three (3) ECM wiring harness connectors.
ECM wiring
harness
connectors (3)
Figure 6
4/67
ITB22-038D
16.
Disconnect the three (3) wiring harness connectors shown in Figure 7.
Wiring harness
connectors (3)
Figure 7
17.
Positive battery
cable nut
Remove the positive battery cable nut,
and then remove the positive battery
cable from the battery terminal with
fusible link.
Battery terminal
with fusible link
18.
Disconnect the engine wiring harness
from its mounting bracket.
19.
Detach the positive battery cable
grommet from the vehicle.
Positive battery
cable grommet
Figure 8
Positive
battery cable
Mounting
bracket
Figure 9
5/67
ITB22-038D
20.
Detach the body ground cable (Figure 10) and the engine ground cable (Figure 11).
The body ground cable is located on the driver (LH) side of the engine room inner
fender.
The engine ground cable is located on the front of the timing cover.
Body
ground cable
Engine
ground cable
Figure 10
Figure 11
21.
Remove all vehicle Under Covers.
22.
Drain the coolant from the radiator.
23.
Remove the two (2) bolts retaining the engine room wiring harness bracket shown in
Figure 12.
24.
Disconnect both the passenger (RH) side and the driver (LH) side heater hoses from
the engine.
Passenger (RH) side
heater hose
Figure 12
Driver (LH) side
heater hose
Figure 13
6/67
ITB22-038D
25.
Detach Fuel Feed Hose 2.
26.
Disconnect Water Hose 1 from
Connector Pipe 3.
Connector Pipe 3
Water Hose 1
Figure 15
27.
Disconnect Water Hose 9 from Water
Pipe 3.
Water Pipe 3
Water Hose 9
Figure 16
7/67
ITB22-038D
28.
Remove the Air Duct (inlet), shown in Figure 17.
Eight (8) clips.
Air Duct (inlet)
Clips (8)
Figure 17
Reservoir Tank
Hose
29.
Disconnect the Radiator Hose (Upper)
and the Reservoir Tank Hose from the
Multi-way Control Valve.
Multi-way
Control Valve
Radiator Hose
(Upper)
Figure 18
Radiator Hose
(Upper)
30.
Disconnect the Radiator Hose (Upper)
from the radiator.
Radiator
Figure 19
8/67
ITB22-038D
31.
Unclip the first clip of the passenger (RH) side and the driver (LH) side Hood Side
Seal Assemblies, to allow access to the Air Cleaner Body (bank 1) and Air Cleaner
Body (bank 2) mounting bolts (Figure 20).
Hood Side Seal
Assemblies
Mounting bolt locations
Clips
Figure 20
32.
Disconnect both MAF sensor wiring harness connectors from the MAF sensors
(Figure 21), located on the Air Cleaner Body (bank 1) and Air Cleaner Body (bank 2).
33.
Unclip the MAF sensor wiring harnesses from Air Cleaner Body (bank 1) and Air
Cleaner Body (bank 2).
34.
Unbolt both Air Cleaner Body (bank 1) and Air Cleaner Body (bank 2); two (2) bolts
each where shown in Figure 21.
35.
Detach both Air Cleaner Body (bank 1) and Air Cleaner Body (bank 2) from Air Duct
(bank 1) and Air Duct (bank 2), and then remove them from the vehicle.
Air Duct (bank 1) and Air Duct (bank 2) are located beneath Air Cleaner Body
(bank 1) and Air Cleaner Body (bank 2).
Air Cleaner
Body (bank 1)
Bolts (4)
MAF sensors
Air Cleaner
Body (bank 2)
Figure 21
9/67
ITB22-038D
36.
Place tape over Air Duct (bank 1) and Air Duct (bank 2) inlets, to prevent foreign
objects from entering the ducts.
To prevent engine damage, tape must be placed over both duct inlets. If foreign
debris enter either duct inlet, turbocharger damage and possibly engine damage may
occur.
37.
For vehicles that have an oil cooler, remove the two (2) bolts retaining Oil Cooler
Pipe 1 bracket to the vehicle (Figure 22 and Figure 23), located under the Air Cleaner
Body (bank 1).
Oil Cooler
Pipe 1 bracket
Bolts (2)
Figure 23
Figure 22
High-Pressure
Flexible Hose
38.
Recover the A/C refrigerant using
approved equipment.
39.
Disconnect the High-Pressure Flexible
Hose from the condenser.
Bolt (1)
One (1) bolt.
Figure 24
10/67
ITB22-038D
Low-Pressure
Flexible Hose
40.
Disconnect the Low-Pressure Flexible
Hose from the Internal Heat
Exchanger Pipe.
Figure 25
Radiator Hose
(lower)
41.
Detach the Radiator Hose (lower) and
the Reservoir Tank Hose from the
Multi-way Control Valve.
Reservoir
Tank Hose
Figure 26
11/67
ITB22-038D
The following Figures are of the passenger (RH) side AWD; driver (LH) side is similar.
HINT: 2WD is similar for steps 42-47.
42.
Raise the vehicle to a comfortable height, and then remove both front wheel
assemblies.
The following steps will be performed on
both passenger (RH) side and the driver
(LH) side.
43.
Brake caliper
assembly
Remove both front brake caliper
assemblies and rotors.
Do not disconnect hydraulic hoses.
HINT: Two (2) piston caliper shown in
Figure 27. Four (4) piston removal is
similar.
Figure 27
Brake hose
locator clip
44.
Remove the brake hose locator clips.
Figure 28
45.
Remove the wheel sensors from both
front Steering Knuckles.
Wheel sensor
Figure 29
12/67
ITB22-038D
46.
Detach the wheel sensor harnesses from the two (2) locations they are attached to on
each steering knuckle bracket (Figure 30).
Figure 30
Top steering
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TSB/Document ID: ITB22-038D
Replacement Service Bulletin Number:
MFR Communication Date: 2025-02-04
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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