TCJ
TCJ is the exclusive Japanese distributor of THINKCAR OBD diagnostic scanners and software, serving automotive repair shops, used-car dealerships, and import vehicle specialists with hardware (¥181,500–¥1,760,000), annual software subscriptions, and the AI-enabled TC Doctor platform and TC Mechanics knowledge community.
- Company typePrivate
- Founded2022
- HeadquartersTokyo, Japan
- Headcount—
- GTM typeB2B
- OfferingHardware or Manufacturing
TCJ firmographics
Firmographics- Name
- TCJ
- Legal name
- 株式会社TCJ
- Website
- https://tcjltd.com
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Short description
- TCJ is the exclusive Japanese distributor of THINKCAR OBD diagnostic scanners and software, serving automotive repair shops, used-car dealerships, and import vehicle specialists with hardware (¥181,500–¥1,760,000), annual software subscriptions, and the AI-enabled TC Doctor platform and TC Mechanics knowledge community.
- Ownership category
- akta.pro rank
TCJ industry classification
Industry- Product category
- Automotive Diagnostic Equipment
- NAICS
- Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823), Wholesale-Electronic Parts & Equipment, Nec (5065)
- akta.pro industry
- Vehicle Diagnostics & Fault Code Scanning ServicesTransportation & Logistics/Vehicle & Equipment Maintenance, Repair & Services (MRO)/Calibration, Diagnostics & Emissions/Compliance TestingExhaust & Emissions/Smog Testing & RepairTransportation & Logistics/Vehicle & Equipment Maintenance, Repair & Services (MRO)/Automotive Repair & Maintenance (Light-Duty Vehicles)
Keywords
Where TCJ is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices2 records
Markets served
TCJ business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Diagnostic Hardware Sales: One-time purchase of vehicle diagnostic scanners including THINKTOOL Max, Master X2, Expert series, and Reader HD. Hardware includes standard accessories like oscilloscopes, video scopes, TPMS tools, and battery test clips.
- Software Subscriptions: Annual software licenses for TCMa (¥90,000/year) and annual update licenses for diagnostic tools (¥143,000/year for THINKTOOL series)
- Security Gateway Licenses: Annual licenses for FCA (¥32,780/year), Renault, and VAG security gateway access to enable vehicle diagnostics
- Specialty Software Licenses: Additional licenses for ADAS (¥64,900), Heavy Duty (¥85,800), EV (¥88,000), and other specialized diagnostic functions
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | One-time purchase | THINKTOOL Max - Premium diagnostic scanner |
| One time/ perpetual license | One-time purchase | THINKTOOL Master X2 - Mid-range diagnostic scanner |
| Subscription | Annual | TCMa - Smartphone-based diagnostic tool |
| One time/ perpetual license | One-time purchase | Expert 399 - Top-tier model for inspection, imports, EV, trucks |
| One time/ perpetual license | One-time purchase | Expert 394 - Core model |
| One time/ perpetual license | One-time purchase | Expert 195 - Mid-range with online coding |
| One time/ perpetual license | One-time purchase | Expert 191 - Entry-level model |
| One time/ perpetual license | One-time purchase | Reader HD - Truck diagnostic tool |
| Subscription | Annual | FCA Security Gateway License |
| Subscription | Annual | Software Update License (THINKTOOL series) |
| Subscription | Annual | ADAS/Heavy Duty/EV Licenses |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels4 records
TCJ product offering
Product offeringCore offering
TCJ sells professional OBD diagnostic scan tools, software licenses, and related accessories (TPMS tools, ADAS calibration, oscilloscopes, videoscopes) for the automotive aftermarket, sourced from THINKCAR and resold/operated in Japan. The company also provides the TC Doctor companion app with AI-powered 24/7 fault code analysis, remote support, and the TC Mechanic knowledge platform for professional mechanics.
Product overview
TCJ provides a multi-tiered portfolio of OBD diagnostic scanners and supporting software/services for the automotive aftermarket. The core offering spans handheld diagnostic scanners — from entry-level (Expert 191, Expert 195) through mid-range (Expert 394, THINKTOOL Master X, Master X2, TCMa) to top-tier flagship models (Expert 399, THINKTOOL Max) — covering passenger vehicles, imports, EVs, trucks, and motorcycles. Accessories include ADAS calibration equipment, TPMS tools, oscilloscopes, videoscopes, battery test clips, and EV-specific cables. Software licenses unlock manufacturer-specific functions (FCA Security Gateway, Renault, VAG SFD, ADAS, HD, EV). TC Doctor is the companion platform integrating AI diagnostics, remote support, OBD certificate issuance, and fault trend analytics, with TC Mechanics extending it into a knowledge-sharing community for professional mechanics.
Differentiator
Problem solved
Functional benefit
Brands
- TC Doctor: AI-powered diagnostic support app offering OBD appraisal certificates, one-touch phone support, repair memo functionality, and 24/7 AI diagnosis.
- TCメカニック (TC Mechanic)
- THINKTOOL Max
- THINKTOOL Master X2
- TCMa
Products and services
- THINKTOOL Max Top-tier OBD diagnostic scanner for professional automotive repair shops and used car dealerships, featuring the highest hardware specifications (CPU, memory, battery, OS), fastest diagnostic speed, and four standard modules (oscilloscope, videoscope, TPMS, battery test clip). Supports new OBD inspection requirements. Priced at 660,000 JPY (tax included).
- THINKTOOL Master X2 Mid-range diagnostic scanner with built-in TPMS, refreshed design, and 220 manufacturer coverage including full diagnostic, maintenance reset, and coding functions. Includes 3-year free software updates (2 years standard plus 1 year additional) and remote support. Priced at 495,000 JPY (tax included).
- THINKTOOL Master X Entry mid-range diagnostic scanner with TPMS as an optional add-on, providing identical diagnostic software functionality to the Master X2 at a lower price point. Priced at 429,000 JPY (tax included).
- TCMa Smartphone app-based diagnostic tool that delivers full diagnostic scanner functionality through a user's mobile phone on an annual subscription. Priced at 90,000 JPY/year (tax included).
- Expert 399 Top-of-the-line flagship Expert model targeting inspection centers, import vehicle specialists, EV, and truck diagnostics. Covers all vehicle segments with maximum functionality. Priced at 825,000 JPY (tax included).
- Expert 394 Core/foundation model of the Expert lineup, designed to flexibly accommodate current and future diagnostic scenarios. Priced at 605,000 JPY (tax included).
- Expert 195 Most affordable Expert model with near-complete functionality, excluding online coding. Priced at 385,000 JPY (tax included).
- Expert 191 Entry-level Expert model with minimum functionality, still supporting import vehicle diagnostics with TCJ support. Priced at 275,000 JPY (tax included).
- Reader HD Diagnostic scanner designed specifically for trucks and construction equipment, positioned as an affordable truck diagnostics solution. Priced at 181,500 JPY (tax included).
- CE EVD (EV Diagnostic) EV-specific diagnostic scanner covering Tesla, BYD, and domestic EV brands. Positioned as the starting point for EV diagnostics.
- MOTO Diagnosis Motorcycle-specific scan tool supporting EURO6 EOBD standards, positioned as the definitive motorcycle diagnostic scanner. Priced at 132,000 JPY (tax included).
- THINKCAR ADAS ADAS (Advanced Driver Assistance Systems) calibration accessory providing portable, accurate, guide-based calibration to simplify ADAS calibration procedures. Priced at 1,760,000 JPY (tax included).
- THINKTOOL TPMS S3 TPMS (Tire Pressure Monitoring System) accessory tool for sensor activation, registration, and diagnosis, positioned as a more affordable TPMS option.
- FCA Security Gateway License Annual software license enabling diagnosis of FCA group vehicles (Fiat, Chrysler, Alfa Romeo) from approximately 2018 onward, which require SGW (Security Gateway) authentication. Essential for working on modern FCA vehicles. Priced at 32,780 JPY/year (tax included).
- TC Doctor Companion mobile and web platform for TCJ diagnostic scanner users that integrates OBD certificate issuance (TCカルテ), one-touch phone support, repair memo with photo sharing, AI-powered 24/7 fault code and general vehicle Q&A, fault code history display, fault trend analysis, and third-party service connectivity. Free for TCJ diagnostic machine purchasers.
- TC Mechanic (TCメカニック) Professional mechanic knowledge platform within TC Doctor for TCJ diagnostic machine users. Enables browsing of diagnostic machine manuals, posting and sharing of success stories and technical information by manufacturer and vehicle model, peer comments, and keyword search. Free service.
Quantifiable outcome
- TPMS work reduced from 1 hour 30 minutes to 15 minutes
- +2 more outcomes
Companies that use TCJ
Customer profileNamed customers3 records
Segments4 records
Ideal customer profiles4 records
TCJ technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability5 records
Feature4 records
TCJ partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core and minor.
- Japan Automobile Distribution OBD Diagnosis Promotion Association (JAODA)coreTCJ is a core founding member preparing for the establishment of JAODA, aimed at promoting OBD diagnosis adoption in the used vehicle distribution market. JAODA plans to issue diagnostic certificates (鑑定書) for used cars using designated scanning tools. Target establishment: December 2026.
- Carseven DigifieldminorCarseven Digifield is a customer and distributor of TCJ diagnostic products, serving the used car dealership market.
- THINKCAR (Thinkcar Global)coreTCJ is the authorized distributor of THINKCAR diagnostic tool products in Japan, sourcing hardware and software technology for vehicle diagnostics, including Security Gateway solutions for FCA, Renault, and VAG vehicles.
Scale indicators3 records
Recent moves5 records
Expansion highlights5 records
TCJ competitors and assessment
Company assessmentRegional players
- ACTIA Group: European diagnostics and vehicle electronics specialist comparable in multi-segment coverage (passenger, commercial, EV) and security-gateway-aware tooling. Regional overlap is limited (Europe-focused) but the technical positioning is similar.
- TEXA: Italian diagnostic equipment maker (Navigator, Axone) with strong motorcycle, marine, and agricultural vehicle diagnostic focus — directly comparable to TCJ's MOTO Diagnosis and Reader HD specialty verticals, though primarily European in geographic reach.
- Carseven (カーセブン): Japan-focused used-car dealer chain and TCJ customer/distributor. Comparable not as a diagnostic tool maker but as a strategic channel partner and downstream use case for TCJ's JAODA-aligned OBD certification in the Japanese used-car market.
Direct peers
- THINKCAR (Thinkcar Global): Core supplier and brand originator of TCJ's diagnostic hardware lineup. While TCJ is the Japan distributor, THINKCAR markets the same hardware platforms globally under its own brand and competes in adjacent verticals with direct sales, making it both the partner and the most directly comparable peer.
Broad incumbents
- Launch Tech: Major Chinese-origin diagnostic tool manufacturer (X-431 series) competing globally in the automotive aftermarket. Directly comparable on product tiering, manufacturer coverage, and AI-assisted diagnostic features.
- Snap-on Incorporated: US-based automotive tool heavyweight offering diagnostic platforms (MODIS, Solus) through franchise distribution. Comparable on diagnostic scanner scope and aftermarket positioning, with much broader portfolio beyond diagnostics.
- Autel Intelligent Technology: Global diagnostic scanner leader (MaxiSys, AP series) competing across passenger, EV, and heavy-duty segments. Comparable to TCJ's portfolio scope and AI-enhanced software focus, with broader geographic reach and R&D scale.
- HELLA Gutmann Solutions: European diagnostic equipment specialist (mega macs series) comparable in tiered handheld scanner offering, OEM data integration, and ADAS calibration focus. Stronger in European OEM coverage but similar mid-to-premium positioning.
- Bosch Automotive Service Solutions: Bosch's diagnostics division (KTS series) provides OEM-grade diagnostic tools competing across passenger and commercial vehicle segments. Comparable on product breadth, security gateway expertise (via OEM relationships), and global distribution.
Emerging players
- TOPDON: Fast-growing Chinese diagnostic tool maker with comparable AI/tablet-style scanner offerings (ArtiDiag, Phoenix series). Increasingly overlapping with TCJ's portfolio and GTM motion in the mid-market segment.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
TCJ financial estimates
Financial estimateRevenue estimate
Valuation estimate
TCJ leadership team
Management profileNumber of profiles
Profiles1 record
TCJ funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
TCJ M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about TCJ
What does TCJ do?
TCJ sells professional OBD diagnostic scan tools, software licenses, and related accessories (TPMS tools, ADAS calibration, oscilloscopes, videoscopes) for the automotive aftermarket, sourced from THINKCAR and resold/operated in Japan. The company also provides the TC Doctor companion app with AI-powered 24/7 fault code analysis, remote support, and the TC Mechanic knowledge platform for professional mechanics.
Is TCJ a public or private company?
TCJ is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was TCJ founded?
TCJ was founded in 2022.
Where is TCJ based?
TCJ is headquartered in Tokyo, Japan, in the Asia region.
How does TCJ make money?
Four revenue lines are on record. Diagnostic Hardware Sales are the primary driver. The others are software Subscriptions, security Gateway Licenses and specialty Software Licenses.
Who are TCJ's main competitors?
Regional players on record are ACTIA Group, TEXA and Carseven (カーセブン). THINKCAR (Thinkcar Global) is listed as a direct peer. Broad incumbents are Launch Tech, Snap-on Incorporated, Autel Intelligent Technology, HELLA Gutmann Solutions and Bosch Automotive Service Solutions. TOPDON is listed as an emerging player.
Does TCJ have an API?
No public API is recorded for TCJ.
What industry is TCJ in?
TCJ's product category is Automotive Diagnostic Equipment. Its primary akta.pro industry code is TLAKANAA, Vehicle Diagnostics & Fault Code Scanning Services, with a secondary code of TLAKAAAI, Exhaust & Emissions/Smog Testing & Repair. Its NAICS code is 3345 and its SIC code is 3823.