Description
Engineered to restore factory-fresh shifting performance and optimal hydraulic pressure balance, the Automatic Transmission Control Valve Body Assembly with Solenoids for Nissan serves as the complete electro-hydraulic command center for Nissan and Infiniti drivetrain platforms. Operating as the primary hydraulic director inside the transmission, this master assembly integrates precision-machined aluminum fluid channels, factory-calibrated linear pressure solenoids, internal pressure sensors, and smooth-sliding spool valves. Over extended service life, high thermal cycling and fluid contamination lead to internal pressure cross-bleeding, solenoid coil resistance decay, and valve sticking. Pre-tested on automated dynamic valve body test benches, this direct-fit replacement module eliminates shift flare, cures acceleration shudder, stabilizes line pressure under heavy loads, and prevents costly friction plate or pulley failure across both stepped automatic and continuous variable transmission architectures.
Technical Parameters
| Category | Specifications & Technical Details |
| High-Density Cast-Aluminum Housing & Micron-Polished Oil Galleries | The valve body housing is manufactured from high-density cast aluminum alloy. The complex internal intersecting oil galleries undergo micron-level precision deburring and super-finishing, greatly reducing fluid friction resistance and preventing internal leakage. |
| Factory-Calibrated Proportional Pressure Solenoid Array | The included PWM (pulse-width modulation) and on/off solenoid valves have all undergone flow curve and electrical resistance calibration under cold / hot conditions before leaving the factory, ensuring 100% matching with Nissan OEM TCM electronic control logic. |
| Micron-Tolerance Low-Friction Anti-Sticking Spool Valves | The internal precision steel spool valve cores feature micron-level fit tolerances, combined with built-in micro filtration structures. They effectively resist micron-level metal debris suspended in ATF / CVT lubricant, completely preventing spool sticking. |
| High-Frequency Main Line Pressure Stabilization System | The optimized main pressure regulation valve responds within milliseconds to throttle depth and engine torque changes, stably outputting high-pressure oil flow. This ensures clutch plates or transmission steel belts engage without slipping under extreme high torque. |
| Integrated High-Temperature FKM Viton Internal Seals | High-grade FKM / Viton sealing gaskets are pre-fitted between valve body plate layers and the solenoid valve base. They possess extremely high oil corrosion resistance and compression deformation resistance, never hardening or internally leaking under continuous oil temperatures up to 140°C. |
Applicable Car Brands & Models
Common failure indicators include:
Harsh Downshift or Upshift Clunks: Violent shaking or thudding when changing gears or when decelerating to a stop.
Engine Revs Without Acceleration (Slipping): Engine RPM surges when pressing the accelerator pedal, but vehicle speed increases slowly due to low fluid line pressure.
Delayed Gear Engagement: Taking several seconds to engage Drive (D) or Reverse (R) from Park (P) or Neutral (N).
Diagnostic Trouble Codes (DTCs): Transmission warning lights accompanied by OBD-II codes such as P0746, P0776, P0868, or P1778.
Yes. After replacing the transmission control valve body on Nissan/Infiniti vehicles, performing a TCM Adaptation Reset and EEPROM / Calibration ROM Data Transfer using a diagnostic scanner (such as Nissan CONSULT, Autel, or Launch) is mandatory. This clears previous learned pressure values and aligns the TCM with the new solenoid pressure characteristics.
Yes. This unit comes completely assembled with all pressure control solenoids, internal fluid passages, and electronic pressure sensors pre-installed. Each assembly undergoes 100% automated bench testing to ensure proper flow rate and electrical resistance specs before packaging.
Each valve body is drained of testing fluid, treated with protective anti-rust oil, and vacuum-sealed in a heavy-duty, moisture-proof polybag. It is then nested in custom-cut, high-density shock-absorbing foam inside a reinforced master carton. Bulk orders are corner-protected and stretch-wrapped on standard pallets for ocean or air transit.
