NHTSA ID Number: 10136559
Manufacturer Communication Number: TSB180048-041920
TSB/Document Date: 2018-05-14
Summary
This Technical Service Bulletin describes the verification and resolution a potential wiring issue where the ignition coil and low engine oil level sensor leads were wired together instead of being wired to the correct leads on the control harness. For liquid propane (LP) units: No physical symptoms are present. However, the low engine oil level sensor may not function as intended, potentially resulting in nuisance shutdowns or backfiring. For gasoline units: The generator set will not immediately shut down when the STOP button is pressed on the control panel or on the remote START/STOP switch. Once the STOP button has been pressed, the unit may run for up to three minutes before shutting down. Additionally, the low engine oil level sensor may not function as intended, potentially resulting in nuisance shutdowns or backfiring.
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)
advanced full-synthetic 
- MaxLife Technology prevents engine breakdown with 40% better...
- Includes seal conditioners to reduce oil consumption and oil...
- Added detergents reduce sludge, corrosion, rust and deposits...
- Advanced friction-fighting additives help maximize...
- Meets or exceeds all requirements of ILSAC GF-6A, API SP...
This product presentation was made with AAWP plugin.
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: TSB180048-041920
Replacement Service Bulletin Number:
MFR Communication Date: 2018-04-20
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
HGJBB Wiring Issue Between Oil Level Sensor and Ignition Coil
Page 1 of 6
Technical Service Bulletin
Technical Service Bulletin:
Released Date: 20-Apr-2018
TSB180048
HGJBB Wiring Issue Between Oil Level Sensor and Ignition Coil
HGJBB Wiring Issue Between Oil Level Sensor
and Ignition Coil
Warranty Statement
The information in this document has no effect on present warranty coverage or repair
practices, nor does it authorize TRP or Campaign actions.
Contents
Product Affected
A specific set of HGJBB Generator Sets produced in March and April of 2018 have been
identified to potentially have a wiring issue. A list of the potentially affected serial
numbers is included at the end of this document.
Issue
Symptom:
• For liquid propane (LP) units: No physical symptoms are present. However, The low
engine oil level sensor may not function as intended, potentially resulting in nuisance
shutdowns or backfiring.
• For gasoline units: The generator set will not immediately shut down when the STOP
button is pressed on the control panel or on the remote START/STOP switch. Once
the STOP button has been pressed, the unit may run for up to three minutes before
shutting down. Additionally, the low engine oil level sensor may not function as
intended, potentially resulting in nuisance shutdowns or backfiring.
Root Cause:
• During production, the ignition coil and low engine oil level sensor leads were wired
together instead of being wired to the correct leads on the control harness. Pictures
of the incorrect and correct wiring can be seen below.
https://qsol.cummins.com/qs3/pubsys2/xml/en/tsb/2018/tsb180048.html
4/27/2018
HGJBB Wiring Issue Between Oil Level Sensor and Ignition Coil
Page 2 of 6
• On LP units: Pressing the STOP button will engage the fuel shutoff solenoid valve
and shut the generator down on command.
• On gasoline units: Pressing the STOP button will turn the fuel pump off, but the
generator will continue to run until the fuel in the carburetor bowl is depleted.
Therefore, the generator may take up to three minutes to shut down after the STOP
button has been pressed.
Figure 1, Incorrect Wiring
https://qsol.cummins.com/qs3/pubsys2/xml/en/tsb/2018/tsb180048.html
4/27/2018
HGJBB Wiring Issue Between Oil Level Sensor and Ignition Coil
Page 3 of 6
Figure 2, Correct Wiring
Verification/Confirmation
For both LP and gasoline units: Visually inspect the wires to ensure they are properly
connected. The black ignition coil wire should be connected to the white wire marked
P1-4 (the white wire will also be marked S1-1). The orange oil level sensor wire should
be connected to the white wire marked P1-6 (the white wire will also be marked S2-1).
The black ignition coil wire and the orange oil level sensor wire should not be connected
to each other. If the black and orange wires are found to be connected to each other,
follow the steps given in the resolution section of this document to correct the issue.
Additionally for gasoline units only: If it is discovered that the generator does not shut
down immediately after pressing the STOP button, this may be an identifier for incorrect
wiring. If the generator does not shut down immediately on command, allow up to three
minutes for the generator to shut down, and then follow the steps given in the resolution
section of this document to correct the issue.
Resolution
For both LP and gasoline units: Connect the black ignition coil wire to the white wire
marked P1-4 (the white wire will also be marked S1-1). Additionally, connect the orange
oil level sensor wire to the white wire marked P1-6 (the white wire will also be marked
https://qsol.cummins.com/qs3/pubsys2/xml/en/tsb/2018/tsb180048.html
4/27/2018
HGJBB Wiring Issue Between Oil Level Sensor and Ignition Coil
Page 4 of 6
S2-1). After both wire connections have been made, start the generator set, allow it to
run for a short period of time, and then ensure the generator shuts down when the STOP
button is pressed.
List of Generator Set Serial Numbers
C180323
058
C180322
891
C180327
311
C180322
993
C180323
029
C180325
747
D180332
956
C180323
059
C180322
892
C180327
312
C180322
994
C180323
030
C180325
748
D180332
957
C180323
060
C180322
893
C180327
313
C180322
995
C180323
031
C180325
749
D180332
958
C180323
061
C180322
894
C180327
314
C180322
996
C180323
032
C180329
044
D180332
959
C180323
062
C180322
895
C180327
315
C180322
997
C180323
033
C180329
045
D180332
961
C180323
063
C180322
902
C180327
316
C180322
998
C180327
318
C180329
046
D180332
963
C180323
064
C180322
963
C180327
317
C180322
999
C180327
320
C180329
047
C180325
775
C180323
065
C180322
964
C180327
386
C180323
000
C180327
321
C180329
048
C180325
776
C180323
066
C180322
965
C180327
387
C180323
001
C180329
306
C180329
049
C180325
777
C180323
067
C180322
966
C180327
388
C180323
034
C180325
719
C180329
050
C180325
778
C180323
068
C180322
967
C180327
389
C180323
035
C180325
720
C180329
051
C180325
779
C180323
069
C180322
968
C180327
390
C180323
036
C180325
721
C180329
052
C180325
780
C180323
070
C180322
969
C180327
391
C180323
037
C180325
722
C180329
053
C180325
781
C180323
071
C180322
970
C180327
392
C180323
038
C180325
723
C180329
054
C180325
782
C180323
072
C180322
971
C180327
393
C180323
039
C180325
724
C180329
055
C180325
783
https://qsol.cummins.com/qs3/pubsys2/xml/en/tsb/2018/tsb180048.html
4/27/2018
HGJBB Wiring Issue Between Oil Level Sensor and Ignition Coil
Page 5 of 6
C180323
073
C180322
972
C180322
896
C180323
040
C180325
725
C180329
056
C180325
784
C180323
074
C180322
973
- 🎉[OTOFIX D1 Lite, Perfect Cost-effective Diagnostic Tool]: OTOFIX D1 Lite, a newest bidirectional scan tool from OTOFIX company, is a great choice for DIYers and repair shops. 👉This obd2 scanner diagnostic tool packs all practical functions: OE level all systems diagnoses, Bi-Directional Control, 38+ reset services fixing 99% of common problems, support DoIP & CANDF protocols and FCA
AutoAuth, high-end hardware configuration. Worldwide vehicles and 🔥2 Years Free Updating🔥 covered. - 🎉[Bi-Directional Scan Tool, Active Test]: OTOFIX D1 Lite bluetooth obd2 scanner can also command ECUs and monitor the operation of the actuators to track down the problems of certain parts, like windows, sunroof, wipers, fuel pumps, etc., saving repair time & trouble. This makes OTOFIX D1 Lite the most cost-effective bidirectional scan tool.
- 🎉[2026 Newest, 38+ Hot Reset Functions]: Equipped with 38+ reset functions in one, the OTOFIX D1 lite automotive scanner diagnostic tool allows you to troubleshoot 99% of common vehicle problems. You can use this car diagnostic scanner holding enough functions to easily repair common vehicle models in your repair shops. Including Oil Reset, Injector Coding, Throttle, DPF Reset, SCR Reset, Gear Learning, Clutch Learning, Suspension, etc. Note* Reset functions vary by model.
- 🎉[OE Level Full Systems Diagnostics]: Unlike the 2-system and 4-system diagnostic tools, the OTOFIX auto scan tool can complete comprehensive system diagnostics within 5 minutes. It accesses and scans all available onboard systems like for Engine /AT /ABS /EPB /BMS /TPMS /SRS /SAS /Audio System /BCM /Air Conditioning / etc., to read & clear codes, view live data, and check ECU information. Note: Active test is not involved.
- 🎉[Powerful Hardware Configuration]: Designed with a fashion appearance & a 7” touchscreen and a weight of 463g, this OTOFIX D1 Lite OBD2 diagnostic scanner scan tool is convenient for everywhere and easy to use & store. Android9.0 OS and 2+64GB memory enhance multi-task smoothness and diagnostic operation, no more wasting too much time. 5800mAh battery allows hours-lasting use. WiFi & VCI1 also bring faster communication for your diagnostics.
- 🏆【2026 TOP OBD2 Scanner Diagnostic Tool】OTOFIX D1 Lite wireless obd2 scanner has upgraded hardware configuration and car coverage. The newly upgraded D1 Lite with 🔥OS Android 9.0🔥1.5Ghz 4 core high efficiency processor🔥2GB RAM+64GB ROM large storage🔥5800mAh large battery, more stable and longer lasting diagnostics🔥 38+ Reset🔥action tests🔥full system diagnostic🔥Supports MV105 endoscope🔥21+ Language Supports🔥100000+ vehicle coverage to meet all your daily maintenance needs.
- 👍【Bi-Directional Control / Active Test】D1 Lite obd2 scanner has bidirectional control(worth $300+), which is the most beloved feature among mechanic. If your headlights or car windows are broken, going to a repair shop will cost a lot of money. You can use D1 Lite to send execution commands to the ECU module and identify the repair status. Such as ABS, car windows, doors, valves, wipers, headlights, etc., effectively shorten diagnostic time and reduce diagnostic costs.
- 🔥【All Systems Diagnostics, In-depth Checking】This advanced OBD2 Scanner D1 Lite can perform OE-level diagnosis of all systems including engine, transmission, airbag, ABS, ESP, TPMS, gateway, steering, radio, and air conditioning for more than 100 brands. This diagnostic scanner supports essential functions, such as reading ECU version info, reading and clearing fault codes, and reading data streams.With just a simple click, it provides you with accurate and in-depth diagnostics.
- 🏆【38+ Reset Hot Functions】For repair workshops, holding an OTOFIX D1 Lite Auto scanner is a strong advantage over others. Its 38+ maintenance functions provide various solutions for all module repairs, including Oil Reset, TPMS Reset, Injector Coding, Suspension, Throttle Matching, etc., which will usher your repair business to a new pinnacle. Continuously updating will never make the functionality & compatibility out-of-date.
- 🏆【150+ Models, 10000+ Car Coverage & 16 Languages】D1 Lite is a comprehensive car diagnostic scan tool, help you to troubleshoot car issues fast for 95% US, European, Asian auto makes. ✅ With frequent updates and optimizations allow D1 Lite to cover more vehicles to meet your needs. ✅ Multilingual menu allows auto mechanics around the world to use it without language barriers. 🚩Note: Kindly send us the S/N of the device to authorize new language updates before changing the menu language.
- 【2026 OTOFIX D1 Lite Gives the Best Value for Money】OTOFIX D1 Lite bidirectional scan tool is more FASTER and SMARTER with 2026 Enhanced Hardwares & New Functions! 👍Alternative Bluetooth +USB connect 👍2G+64GB 👍4x ARM Cortex-A35 (1.5GHz) Processor (5X Faster CPU) 👍Android 9.0 OS 👍5G GHz WiFi 👍CANFD&DOIP 👍 FCA AutoAuth 👍38+ Services 👍3K+ Bi-Directional Control 👍Full Systems Diagnose 👍2 Years Update 👍150+ Vehicle Coverage.
- 👍【Active Tests】 OTOFIX D1 Lite is a bi-directional scan tool that can send commands to, and also receive information from vehicle control modules. This way, you can quickly locate and repair faulty auto parts. For Example: send direct commands to ask the vehicle to turn on/off the radiator fan, lights, sound horn, fuel pump, modulate throttle, open/close windows, operate mirrors and more. *Note that only available tests will be displayed in the menu.
- 👍【38+ Service Functions】 OTOFIX D1 Lite scan tool offers 38+ of the hottest service functions that are commonly used for car repairs. That include Oil reset/SAS/EPB/BMS/Throttle/ABS bleeding, and 2065-new SUS/ADBLUE/NOX/Headlamp resets (and more) to help restore your car status after repairs are done. Compared to other diagnostic scanners for cars, the OTOFIX D1 Lite scanner is much more fully-featured. *Note that specific functions available depend on the make/model/year of your car.
- 👍【All System Diagnostics + Cloud Report Management】 This 2026 car scanner OTOFIX D1 Lite provides troubleshooting and data for all ECUs: read/clear DTCs, view graphic live data/VIN, and locate system faults for safe driving. With Cloud Report Management, you can save detailed reports to cloud servers and easily shared them with others via QR codes/emails/text messages. Others can access these reports from any device (smartphones/tablets/PCs …) anytime, and you can better manage repair work.
- 👍【99% Car Coverage】 This one-station car scanner diagnostic for all cars works on 150+ major car brands across the world. 1) It supports CAN-FD/DoIP protocols: compatible with GMCAVALIER/TRAX/Encore/Envision/GL8(LSY)/CT4/CT5 after 2019; Volvo after 2018; Land Rover/Jaguar after 2017; and BM.W F/G all chassis. 2) For models equipped with security modules (such as Renault & 2018+ FCA SGW), its built-in AutoAuth allows you to easily break diagnostic barriers after registration.
This product presentation was made with AAWP plugin.
Last update on 2026-05-11 / Affiliate links / Images from Amazon Product Advertising API