Dedicated Subsystem WorkbenchPlatform Gen: 2016–2026

2023 Triumph Bonneville T120 / Black / Speed Twin 1200 / Thruxton Charging System, Stator AC Output & Battery Health

Stator 3-phase AC voltage at 5,000 RPM, coil resistance, regulated DC voltage, battery code YTX12-BS (12V 10Ah), CCA rating, and multimeter charging diagnostic steps for 2023 Triumph Bonneville T120 / Black / Speed Twin 1200 / Thruxton.

Technical PassportOEM VERIFIED

Engine

1200cc

Cooling

Liquid-Cooled

Final Drive

525 Chain

Engine Oil

3.80 L (4.02 US qt)

Spark Plug

NGK LMAR8A-9

Front Tire

100/90-18 (T120) / 120/70 ZR17 (Speed Twin)

Gen 2016–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2016 through 2026.

SPECS-TO-CART BUNDLESFactory Direct-Fit Maintenance Bundles Available

1-Click verified Motul engine oil service kits, race filters, spark plugs, and brake fluid pre-measured for this 2023 Triumph Bonneville T120 / Black / Speed Twin 1200 / Thruxton.

Configure Service Bundles→

Select Model Year:(Active: 2023)
11 Production Years (2016–2026)

2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Suggested Items3 Verified Workshop Consumables Available for this Job

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3-Phase Charging System & Battery Diagnostic Flowchart

Yuasa & OEM Standards

Multimeter troubleshooting protocols, cold cranking amps (CCA) ratings, 3-phase stator AC outputs, and regulator-rectifier health verification.

Shop YTX12-BS (12V 10Ah) Batteries

OEM Battery Code

YTX12-BS (12V 10Ah)

Cold Cranking Rating

Not Available

Capacity (10HR Rate)

Not Available

Regulated Output Spec

Key-OFF Parasitic Limit

Enter Multimeter DC Voltage Reading

V DC

Multimeter Test Diagnosis

Enter your multimeter terminal reading on the left to view instant diagnostic interpretations and recommended workshop actions.

OEM Factory AGM BatteryOEM Replacement

Dimensions: • Weight: Not Available. Pre-filled absorbed glass mat technology engineered for heavy vibration resistance.

Lithium LiFePO4 UpgradeUp to 70% Lighter

Features built-in RE-START jump starting reserve. Never stranded by dead lights: press the restart button on the top terminal to crank the motorcycle without jumper cables.

Smart Maintainer SpecBattery Life Extension

Standard Charge Rate: . Automated desulfation & float maintenance ensures full capacity retention during off-season winter storage.

Recommended Parts: •

Shop Smart Battery Chargers Find Direct-Fit Batteries

Triumph Diagnostic Fault Codes & Multimeter Bench Testing

FI & OBD2 Decoder

Authentic factory ECU fault codes, sensor resistance specifications, and harness pinout troubleshooting.

Launch Full Triumph DTC Engine→

Code P0107Manifold Absolute Pressure (MAP) Sensor

MAP sensor circuit low voltage or condensation moisture blockage in vacuum line.

Test: 5.0V VRef at sensor harness pin 1; check SRAN 606 breather hose condensation trap.

Code P0118Engine Coolant Temperature (ECT)

Coolant temperature sensor signal open circuit or shorted high (> 4.85V).

Test: Measure NTC thermistor: 2.45 kΩ at 20°C (68°F); 290 Ω at 85°C (185°F).

Code P0122Throttle Position Sensor (TPS / APS)

Electronic throttle twist grip or throttle body position sensor low voltage.

Test: Check APS 1 (0.85-4.15V) and APS 2 (0.42-2.08V); ratio must maintain exact 2:1 correlation.

Code P0335Crankshaft Position (Pick-Up) Sensor

Zero engine speed sync timing pulses received by Keihin / Bosch ECU.

Test: Measure VR inductive pickup coil: 560±50 Ω across 2-pin harness connector.

Code P0505Idle Speed Control Malfunction

Engine idle speed deviates from target by > 150 RPM after adaptation learning.

Test: Perform Triumph TuneECU / Dealer Tool 12-minute adaptation idle reset from cold start.

Code P1600CAN Bus Pack Communication Timeout

CAN bus lost communication between Instrument Pack, ABS Modulator, and Engine ECU.

Test: Measure 60 Ω termination resistance between CAN-H (Blue) and CAN-L (Red) at diagnostic port.

Looking for other error codes, sensor pinouts, or OBD2/Euro 5 codes?

View All 68 Multi-Brand Diagnostic Trouble Codes →

Official NHTSA Safety Recalls & Technical Bulletins

2 Active Campaigns

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

The U.S. National Highway Traffic Safety Administration reports 2 safety recall campaigns associated with this platform. Independent repair shops and riders should confirm that authorized dealership warranty remedies have been applied.

NHTSA #24V785000ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLES

Received: 21/10/2024▼

Defect Description

Triumph Motorcycles America, Ltd. (Triumph) is recalling certain 2022-2024 Bonneville T100, T120, T120 Black, 2022 Triumph Street Scrambler, Street Scrambler Sandstorm, Street Twin, Street Twin Goldline, 2023-2024 Scrambler 900, and Speed Twin 900 motorcycles. The wiring between the alternator and main harness connector may short circuit and overheat.

Safety Hazard / Consequence

Overheated wiring increases the risk of a fire or crash.

Factory Remedy & Repair Action

Dealers will install a new wire alignment clip, free of charge. Owner notification letters were mailed November 18, 2024. Owners may contact Triumph customer service at 1-678-854-2010. Triumph's number for this recall is SRAN 627.

Manufacturer Notes: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or go to nhtsa.gov.

NHTSA #26V078000ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

Received: 11/02/2026▼

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

2 Documented Bulletins

Bulletin #SRAN-560Safety Recall 19V-133 / SRAN 560: Bonneville T120 / T100 / Street Twin Steering Headstock Tidy & Clutch Cable Routing

Source: RCLRPT-19V133-9239.pdf

Mandated Torques:Headstock Tidy Cable Guide Screws (2x M5): 3 N·m (27 in-lb)Handlebar Upper Riser Clamp Bolts (4x M8): 26 N·m (19.2 lb-ft) (Front bolts tightened first to ZERO GAP)Headlamp Bowl Mounting Bracket Screws: 7 N·m (62 in-lb)Clutch Lever Pivot Bolt: 3 N·m (27 in-lb) / Locknut: 6 N·m (53 in-lb)

Consumable Specs:Coroplast High-Adhesion Anti-Abrasion Textile Harness TapeMolybdenum Disulfide Cable LubricantCorrugated Flame-Retardant Wire Conduit Sheath

Genuine Part Numbers:T2070054 (Countermeasure Headstock Tidy Bracket - Left)T2070055 (Countermeasure Headstock Tidy Bracket - Right)T3010114 (Coroplast Protective Sheath Wrap)T3020058 (Guide Fasteners M5)

NHTSA Recall 19V-133Triumph Campaign SRAN 560

Triumph Bonneville T120 / T100 / Street Twin Steering Headstock Tidy & Clutch Cable Routing

Electrical short-circuit countermeasure: Replacement headstock tidy bracket (T2070054), harness separation, and handlebar clamp sequence (26 N·m).

CLICK ANY ROUTING COMPONENT TO VIEW ANTI-CHAFING BRACKET SPECIFICATIONS AND HANDLEBAR CLAMP TORQUES

Select a component above to inspect headstock tidy replacement hardware, wiring sheath repairs, and handlebar riser clamp sequence.

Bulletin #SRAN-641Safety Recall 24V-785 / SRAN 641: Bonneville T120 / T100 / Speed Twin 900 Alternator to Regulator Connector Thermal Relief

Source: RCLRPT-24V785-3629.pdf

Mandated Torques:Regulator/Rectifier Frame Mounting Screws: 7 N·m (62 in-lb)Left Engine Alternator Cover Bolts: 9 N·m (80 in-lb) (diagonal pattern)Battery Ground Cable Terminal Stud: 4.5 N·m (40 in-lb)

Consumable Specs:DeoxIT High-Conductivity Contact Lubricant & SealantCoroplast High-Temperature Wiring TapeAlternator Cover Gasket (T1260262)

Genuine Part Numbers:T2500412 (Alternator Terminal Wire Alignment Clip Kit)T2500415 (Sealed 3-Pin Alternator Output Connector)T1260262 (Alternator Casing Gasket)