NHTSA ID Number: 10219411
Manufacturer Communication Number: KC-219
TSB/Document Date: 2022-09-08
Summary
oil in the control housing of the transmission diagnostics
8/30/22, 11:19 AM
Article
Oil In Control Housing Or TECU -- AMT-F
Internal Content
IMPORTANT
If there is oil leakage from the gearbox vents or a report of 'smoke' or
'oil mist' during shifting, gear box testing or PTO operations
accompanied with excessive air leakage during these operations:
Article CBR-343 for Mack
and CBR-338 for Volvo should be
referenced.
If there is no air leakage or only slight air leakage from vents
during countershaft brake testing and oil is found in the control
housing:
1. Remove the gearbox from the vehicle.
2. Remove the countershaft brake air line.
3. Check for the presence of oil in the air line or check the exhaust port
on the solenoid block for the presensce of oil.
If oil is found in the countershaft brake airline or the solenoid block
then repair or replace the countershaft brake as needed. Oil in the
solenoid block does not affect the operation and can be cleaned and
reused following the instructions below.
The clutches in the countershaft brake must also be replaced.
The Countershaft brake assembly is not available as an assembly.
Order parts as needed. Repair instructions are availiable in IMPACT
for the countershaft brake piston assembly.
Clean the oil from the inside of the control housing and from the
TECU with a clean cloth and blow it dry with compressed air. Cleaning
sprays like brake cleaner are not recommended by WABCO for
cleaning the electrical components like the solenoids harnesses and
circuit boards. Unplug the connectors from the circuit board and
clean the oil from inside the connections with compressed air and
wipeUIoff any residue. Clean all the air passages for the countershaft
; Live
brake and reassemble the unit.
https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD3?pyActivity=%40basec…
1/5
8/30/22, 11:19 AM
Article
2/5
8/30/22, 11:19 AM
Article
3/5
8/30/22, 11:19 AM
Article
NOTE: Bench test assembly before reinstallation.
4/5
8/30/22, 11:19 AM
Article
Tags
k90500425
mdrive hd
oil in control housing
mack
mdrive
amt-f
i-shift
oil contamination in control housing
Related links and attachments
No content available
Feedback
Give feedback
to help improve the content of this article
5/5
8/31/22, 12:57 PM
Article
Mack Chassis - mDRIVE Transmission - AMT Gear
Box Air Leaks
Internal Content
Complaint:
Air leak from the left or right side vent of the TECU all the time. AMT-D:
See Figures 2 and 3.
Air leak from gearbox case vent tube all the time AMT-C: see Figure 5
Cause:
AMT - C & D; One or more TECU shift valves have become stuck open
allowing the air path to the open venting solenoid. This can be an
intermittent issue. Testing and investigation has shown that exercising
the valves with TT by forcing shifts can ‘unstick’ the valves and the leak
might not return however there is a good chance that the valve will
become stuck again. TECU to control housing seals can leak causing
symptoms like described and should be checked prior to major
component replacement. A leak between ports in the TECU due to a
failed gasket like in picture below can cause erratic or undesired
shifting due to air bleeding to the wrong ports during shifting. The
seals should be pliable and have a peaked appearance. This seal is
bad due to the flattened sealing surfaces.
1/8
8/31/22, 12:57 PM
Article
2/8
8/31/22, 12:57 PM
Article
Repair:
Replace TECU to Control housing seals if faulty and retest
Replace TECU
Complaint:
Air leak only when shifting or certain gears are not avail during
operation or slow shifting accompanied by an air leak.
Cause:
Air leaks like these are in the shift control housing and not the TECU.
Causes of these leaks are typically screws backed out of the shift
piston covers (see figure 4) that allow the end cap to come out and
vent air to the case during a shift. This will typically only be affecting
one shifter and only when the shifter is asked to move in only one
direction. The complaint may indicate that several gears are
UI
; Live
unavailable at random times. The TECU will find these gears and will
https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD1?pyActivity=%40basec…
3/8
8/31/22, 12:57 PM
Article
try and avoid them if possible during operation. This may not always
happen consistently but in an effort allow unit operation the TECU will
abandon certain gears. A key cycle will typically reset this learning and
the unit will have to relearn the ‘bad’ gears.
Other causes of these types of leaks are broken shift forks piston rods
and cracked internal pistons. The broken rods can be identified by
inspection after removal of the control shift housing and manipulation
of the shift forks. One of them will feel like it is ‘not attached to
anything inside’. An AMT-C with external vent tubes on the right side
of the gearbox will vent air from the vent tubes when these two
failures occur. An AMT-D is internally vented through the TECU and
will leak air from the vents on the TECU.
Warning: Do not transfer the external vent tubes from an AMT-C to
an AMT-D gearbox during a repair.
The other types of failure that can occur and cause leaks during
shifting are broken/cracked internal shift pistons. This failure will in
addition to having an air leak will be a slow shift of the failed piston.
These failures will vent through the TECU vents on all AMT versions.
Cracked pistons will vent air from the TECU vents but this is only
during shifting. Air leaks during shifting can also be caused by a
leaking countershaft brake assembly, CVU or CCA. Testing of these
components is needed prior to replacing the control housing
assembly.
Repair:
Replace shift control housing only, unless other damage is found.
Complaint:
Gearbox slow to engage a gear from Neutral or shift quality is bad.
Slow to shift between gears or harsh shifting. Air leak heard from
clutch/flywheel housing.
UI
; Live
Cause:
https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD1?pyActivity=%40basec…
4/8
8/31/22, 12:57 PM
Article
Air leak on CCA (Clutch control Actuator) inside clutch housing.
Air leak on Countershaft brake assembly
Perform clutch release tests in TT and listen for excessive air to escape
during these tests. Some air venting is normal but long blasts of air
are not normal.
Repair:
Inspect and replace the cause of the leak. Tech tool can be used to
manipulate the clutch actuator with the gearbox in or out of chassis to
investigate this type of leak. Use 4111-08-04-01 - PWM Valves Clutch
Activation, Test (Transmission Removed) or 4111-08-03-06 - PWM
Valves Clutch Activation, Test to pressurize the clutch system to check
for leaks.
Internal AMT-D venting
The internal venting of the AMT-D is provided in the bearing
retainer plate for the rear main shaft bearing. This provides
venting and oil separation for return back to the gearbox.
5/8
8/31/22, 12:57 PM
Article
AMT-D gearbox venting with bearing retainer removed. All of this
is contained behind the high range synchronizer cone in the rear
of the gearbox.
The Vent port is cast and drilled in the main case and leads into
the control housing and TECU and is vented through the ports on
the left side of the main case.
6/8
8/31/22, 12:57 PM
Article
Internal ports in the control housing and the air path for gearbox
case venting.
Tags
air leak
7/8
8/31/22, 12:57 PM
Related links and attachments
No links or attachments available
Article
Feedback
Give feedback
to help improve the content of this article
8/8
8/31/22, 12:58 PM
Article
Volvo Chassis - I-Shift Transmission - AMT Gear
Box Air Leaks
Internal Content
Complaint:
Air leak from the left or right side vent of the TECU all the time. AMTD: See Figures 2 and 3.
Air leak from gearbox case vent tube all the time AMT-C: see Figure 5
Cause:
AMT - C & D; One or more TECU shift valves have become stuck open
allowing the air path to the open venting solenoid. This can be an
intermittent issue. Testing and investigation has shown that
exercising the valves with TT by forcing shifts can ‘unstick’ the valves
and the leak might not return however there is a good chance that
the valve will become stuck again. TECU to control housing seals can
leak causing symptoms like described and should be checked prior to
major component replacement. A leak between ports in the TECU due
to a failed gasket like in picture below can cause erratic or undesired
shifting due to air bleeding to the wrong ports during shifting. The
seals should be pliable and have a peaked appearance. This seal is
bad due to the flattened sealing surfaces.
1/9
8/31/22, 12:58 PM
Article
2/9
8/31/22, 12:58 PM
Article
Repair:
Replace TECU to Control housing seals if faulty and retest
Replace TECU
UI
Complaint:
; Live
https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD1?pyActivity=%40basec…
3/9
8/31/22, 12:58 PM
Article
Air leak only when shifting or certain gears are not avail during
operation or slow shifting accompanied by an air leak.
Cause:
Air leaks like these are in the shift control housing and not the TECU.
Causes of these leaks are typically screws backed out of the shift
piston covers (see figure 4) that allow the end cap to come out and
vent air to the case during a shift. This will typically only be affecting
one shifter and only when the shifter is asked to move in only one
direction. The complaint may indicate that several gears are
unavailable at random times. The TECU will find these gears and will
try and avoid them if possible during operation. This may not always
happen consistently but in an effort allow unit operation the TECU will
abandon certain gears. A key cycle will typically reset this learning and
the unit will have to relearn the ‘bad’ gears.
Other causes of these types of leaks are broken shift forks piston
rods and cracked internal pistons. The broken rods can be identified
by inspection after removal of the control shift housing and
manipulation of the shift forks. One of them will feel like it is ‘not
attached to anything inside’. An AMT-C with external vent tubes on
the right side of the gearbox will vent air from the vent tubes when
these two failures occur. An AMT-D is internally vented through the
TECU and will leak air from the vents on the TECU.
Warning: Do not transfer the external vent tubes from an AMT-C to
an AMT-D gearbox during a repair.
The other types of failure that can occur and cause leaks during
shifting are broken/cracked internal shift pistons. This failure will in
addition to having an air leak will be a slow shift of the failed piston.
These failures will vent through the TECU vents on all AMT versions.
Cracked pistons will vent air from the TECU vents but this is only
during shifting. Air leaks during shifting can also be caused by a
leaking countershaft brake assembly, CVU or CCA. Testing of these
components is needed prior to replacing the control housing
assembly.
4/9
8/31/22, 12:58 PM
Article
Repair:
Replace shift control housing only, unless other damage is found.
Complaint:
Gearbox slow to engage a gear from Neutral or shift quality is bad.
Slow to shift between gears or harsh shifting. Air leak heard from
clutch/flywheel housing.
Cause:
Air leak on CCA (Clutch control Actuator) inside clutch housing.
Air leak on Countershaft brake assembly
Perform clutch release tests in TT and listen for excessive air to
escape during these tests. Some air venting is normal but long blasts
of air are not normal.
Repair:
Inspect and replace the cause of the leak. Tech tool can be used to
manipulate the clutch actuator with the gearbox in or out of chassis
to investigate this type of leak. Use 4111-08-04-01 - PWM Valves
Clutch Activation, Test (Transmission Removed) or 4111-08-03-06 UI
; Live
PWM Valves Clutch Activation, Test to pressurize the clutch system to
check for leaks
5/9
8/31/22, 12:58 PM
check for leaks.
Article
Internal AMT-D venting
The internal venting of the AMT-D is provided in the bearing
retainer plate for the rear main shaft bearing. This provides
venting and oil separation for return back to the gearbox.
AMT-D gearbox venting with bearing retainer removed. All of this
is contained behind the high range synchronizer cone in the rear
of the gearbox.
6/9
8/31/22, 12:58 PM
Article
The Vent port is cast and drilled in the main case and leads into
the control housing and TECU and is vented through the ports on
the left side of the main case.
; Live UI
Internal ports in the control housing and the air path for gearbox
7/9
8/31/22, 12:58 PM
Article
Internal ports in the control housing and the air path for gearbox
case venting.
Tags
k34232811
us07
us10
us14+obd15
us14+obd16
vhd
11l engine
amt-c
vt
amt-d
us10+obd13
vnl
13l engine
vnm
us14
vah
16l engine
; Live UI
Related links and attachments
Feedback
8/9
8/31/22, 12:58 PM
e ated
s a d attac
e ts
Article
eedbac
No links or attachments available
Give feedback
to help improve the content of this article
9/9
- 6X better wear protection on critical engine parts than...
- 1.3X better sludge protection than industry standards*
- 3X Stronger against viscosity breakdown than leading full...
- Protection for 10,000 miles between oil changes
- Meets or exceeds the following specifications: API SP/SN...
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: KC-219
Replacement Service Bulletin Number:
MFR Communication Date: 2022-08-29
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- [Notice] When you receive a used device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way. THINKSCAN 689BT Bidirectional Scan Tool Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
- Full Bi-Directional Control & 3000+ Active Tests: Take control and test components like actuators, fuel injectors, relays, and cooling fans in real time. You’ll quickly see if the problem is in the part itself or the control module — saving you hours of guesswork and frustrating trial-and-error.
- Advanced ECU Coding Capabilities: Handle module matching and hidden feature activation with confidence. When you replace an ECU or want to customize settings, this obd2 scanner diagnostic bi directional tool gives you the professional-level capabilities you need without the dealership price tag.
- 34+ Useful Reset and Maintenance Functions: Complete everyday service tasks smoothly with a wide range of helpful reset and maintenance functions. Whether you’re keeping up with regular upkeep or tackling a specific job, this scanner makes maintenance simpler and less stressful for both DIYers and pros.
- Comprehensive Full System Diagnostics: Diagnose every major system — Engine, Transmission, ABS, SRS, TPMS, and more — all in one place. Finally stop wondering if you’re missing something important; get the full picture and clear codes with ease.
- Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCA
Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU c0ding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations - 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCA AutoAuth: Now supports FCA SGW module for Chrysler, for Jeep, for Dodge (2018+), for Fiat (2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Pr0gramming): Allows for Ford, for Lincoln, and for Mazda ECU pr0gramming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order
- 39+ Services/Resets/Adaptations/Relearns/Calibrations: XTOOL D7S full system car scanner diagnostic tool tackles 99% of common car issues through its 36+ special functions, including Oil Reset, EPB, SAS, BMS, Throttle Reset, Injector C0ding, ABS Bleed, TPMS Reset, Power Balance, etc and also covers specific-vehicle functions like Crank Sensor Relearn, ABS Initialization, Cylinder Power Balance, Fuel Trim Reset, Idle Relearn etc. This car diagnostic scanner enhances efficiency, making repairs and maintenance hassle-free. Tip: DO NOT for All vehicles, please check compatibility first
- Cost-effective ECU C0ding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMW, for Benz and offline for BENZ, for MIT, along with PMI functions for Ford, for Mazda, and for Lincoln. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase
- OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently
- 【✅Compared to BOSSCOMM IF742, IF745 Offers Full-System Diagnostics】The BOSSCOMM IF745 car diagnostic scanner is an upgraded model of IF742. In addition to supporting all OBD2 Code Reader functions and 6 reset options (ABS/EPB/SAS/BMS/Oil/Throttle), it expands diagnostics from 4 systems (Check Engine/ABS/SRS/Transmission) to vehicle All systems, including Steering, Suspension, and Body Electronics. This provides deeper, more comprehensive diagnostic capabilities.
- 【✨10 OBD2 Functions】The BOSSCOMM IF745 scan tool’s DTC Lookup instantly translates fault codes into user-friendly explanations, its I/M Readiness feature streamlines emissions testing with a single tap, and Freeze Frame lets you pinpoint the exact moment of a fault for in-depth root-cause diagnosis. Combined with a live data dashboard and advanced diagnostics (O2S, OBMon, EVAP), it delivers comprehensive insights for confident troubleshooting.
- 【✨Deep Diagnostics for All Vehicle System Modules】Beyond code reading/clearing and ECU information retrieval, our all-in-one data stream feature lets you inspect all current fault codes and their locations across the vehicle’s systems. This vehicle code reader helps you turn off dashboard warning lights and perform a comprehensive self-check of your car at home—no more back-and-forth trips to the repair shop or hefty inspection fees.
- 【✨6 Essential Resets: ABS Bleeding, Oil, EPB, SAS, Throttle, BMS】The BOSSCOMM IF745 obd2 scanner diagnostic tool swiftly purges air from brake lines to restore braking sensitivity, fine-tunes maintenance cycles to eliminate false alerts, resolves parking brake issues with one-click control, recalibrates steering sensors for stability, optimizes engine idling/acceleration for smoother performance, and deeply resets battery systems to extend lifespan and range via precise parameter adjustments.❗NOTE: Does NOT support bidirectional control, coding, or programming.
- 【✨10,000+ Car Models, AutoVIN, 13 Languages】The BOSSCOMM IF745 vehicle scanner diagnostic tool covers 73+ global car brands and offers support in 13 languages, making it perfect for DIYers, auto mechanics, or as a thoughtful gift. With a single-click AutoVIN feature, it instantly retrieves vehicle serial numbers, streamlining diagnostics for users globally. This adaptable tool balances user-friendliness with precision, catering to both personal and professional requirements.✅Unsure about compatibility? Compatibility will vary on vehicles' model and year, pls reach us via 📧 [email protected] 📧 before purchase.
This product presentation was made with AAWP plugin.