Nissan

310203JX7A Nissan Tiida JF015E Transmission

OE NO.:310203JX7A
Model Number: JF015E
Transmission Speeds:CVT
Gearbox Type:CVT
Product description: Application: Nissan Passenger Cars (Core Market): Tiida: 1.5L, 1.6L, 1.8L (2011 - 2020) Sylphy / Bluebird Sylphy: 1.6L, 1.8L (2012 - 2020) Sunny: 1.5L (2011 - 2020) Sentra: 1.8L (2012 - 2019) Ve
INQUIRY

Model Number	JF015E
MOQ	1 Pcs
Condition	Remanufactured
Warranty	6 Months

The Continuously Variable Transmission (CVT) assembly with reference number 310203JX7A is designed for the Jatco JF015E (Nissan code RE0F11A). This unit features a unique sub-planetary gear set and two-stage pulley system, optimized for smaller displacement engines to provide smooth acceleration and excellent fuel economy for the Nissan Tiida, Versa, and related compact platforms.

Quick Specifications:

Part Number: 310203JX7A (Nissan OEM format)
Transmission Model: Jatco JF015E / Nissan RE0F11A
Type: Continuously Variable Transmission (CVT) with Sub-Planetary Gear
Configuration: Front-Wheel Drive (FWD)
Max Input Torque: ~180-200 Nm (Optimized for 1.5L - 1.8L engines)
Fluid Type: Nissan NS-3 CVT Fluid
Fluid Capacity: ~6.5 - 7.5 Liters (dry fill)

Applications:

Nissan Tiida / Versa Note (C12) (2012-2019, 1.5L/1.6L HR15DE/HR16DE variants)
Nissan Versa Sedan (N17) (2012-2019, 1.6L variants)
Nissan Micra (K13) (Select 1.2L/1.5L markets)
Nissan Sylphy / Sentra (B17) (1.6L/1.8L variants in select regions)
Renault Clio / Captur (Select markets using JF015E)
Mitsubishi Mirage / Attrage (Select CVT applications)

Complete Assembly Includes:

✅ Transmission case with dual-stage pulley system and sub-planetary gear
✅ High-strength steel push-belt
✅ Torque converter with lock-up clutch
✅ Valve body with TCM (Transmission Control Module) integrated
✅ Oil pump, input/output speed sensors, and turbine speed sensor
✅ Cooler lines and sealing gaskets

Note: Transmission mounts, shift linkage, and external wiring harness adapters may need to be transferred from the original unit.

Key Features:

✅ Two-Stage Design: Uses a sub-planetary gear to switch between low and high ranges, allowing for smaller pulleys and reduced friction losses.
✅ Seamless acceleration without distinct shift points.
✅ Optimized for small-displacement engines (1.2L - 1.8L) for maximum fuel efficiency.
✅ Integrated TCM for precise control of belt clamping force and ratio.
✅ Requires specific NS-3 low-viscosity fluid for proper operation.

Technical Notes:

Critical Installation Requirements:

Fluid Specification: Must use Nissan NS-3 CVT fluid exclusively. Using NS-2 or other fluids will cause shudder, overheating, and premature failure.
Level Check Procedure: The fluid level must be checked at a strict temperature range (typically 40°C–50°C for initial check, then finalized at operating temp) with the engine running. Overfilling causes foaming and pressure loss; underfilling causes belt slip.
TCM Initialization: After installation, perform "TCM Memory Reset," "Idle Air Volume Learning," and "Throttle Valve Closed Position Learning" using a diagnostic scanner (e.g., Consult-III or equivalent). Failure to calibrate often results in high idle, limp mode, or poor driveability.
Cooler Flushing: The transmission cooler and lines must be flushed or replaced. Debris from a failed CVT will clog the valve body and destroy the new unit immediately.

Common Issues & Maintenance:

Overheating: The JF015E is compact and can run hot in stop-and-go traffic. Ensure the cooling system is efficient.
Shudder on Acceleration: Often caused by degraded NS-3 fluid or contaminated valve body solenoids. Regular fluid changes (every 40,000–60,000 km) are critical.
Noise: Whining or humming usually indicates bearing wear or belt slippage due to low line pressure.