Dedicated Subsystem WorkbenchPlatform Gen: 2021–2025

2024 Honda CRF450R Charging System, Stator AC Output & Battery Health

Stator 3-phase AC voltage at 5,000 RPM, coil resistance, regulated DC voltage, battery code HY85S, CCA rating, and multimeter charging diagnostic steps for 2024 Honda CRF450R.

Technical PassportOEM VERIFIED

Engine

449cc

Cooling

Not Available

Final Drive

520 Chain

Engine Oil

1.05 L (1.11 US qt) shared engine/transmission sump

Spark Plug

NGK SILMAR9A-9S (Iridium)

Front Tire

80/100-21 51M

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Gen 2021–2025

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2021 through 2025.

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 2024 Honda CRF450R.

Configure Service Bundles→

Select Model Year:(Active: 2024)
5 Production Years (2021–2025)

2021 2022 2023 2024 2025

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 HY85S Batteries

OEM Battery Code

HY85S (LiFePO4 (Lithium Iron Phosphate))

Cold Cranking Rating

120 CCA

Capacity (10HR Rate)

2 Ah (12V)

Regulated Output Spec

14.0V – 14.4V DC @ 5,000 RPM

Key-OFF Parasitic Limit

< 1.0 mA

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: 113mm L x 70mm W x 85mm H • Weight: Not Available. Pre-filled absorbed glass mat technology engineered for heavy vibration resistance.

Lithium LiFePO4 UpgradeUp to 70% Lighter

OEM Equipped LiFePO4 (Antigravity ATZ-7 / Shorai LFX14A2-BS12 compatible)

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: 1.0A Max (Dedicated LiFePO4 Charger Only — Zero Desulfation). Automated desulfation & float maintenance ensures full capacity retention during off-season winter storage.

Recommended Parts: •

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Honda Diagnostic Fault Codes & Multimeter Bench Testing

FI & OBD2 Decoder

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

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Code 1 BlinkManifold Absolute Pressure (MAP)

MAP sensor circuit low or high voltage (< 0.15V or > 4.95V).

Test: 5.0V reference from ECM; 2.7-3.1V at sea level ambient.

Code 7 BlinksEngine Coolant Temp (ECT)

ECT sensor circuit open or shorted to ground.

Test: 2.3-2.6 kΩ at 20°C (68°F); drops to 200-400 Ω at 80°C (176°F).

Code 21 BlinksOxygen Sensor (O2)

O2 sensor heater or voltage circuit malfunction.

Test: Measure heater element pins: 10-16 Ω at 20°C.

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

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Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

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

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2024 Honda CRF450R platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.