Sensors & outputs Solenoid
VVT solenoid
OCV, VANOS, VTEC solenoid · output · Solenoid
Two-wire oil-control valve. Race Core high-sides source 12 V; the other side of the valve returns to power ground. Intake / bank 1 is Highside 1.
Typical parts: Toyota 1UZ / 2JZ OCV; Nissan VQ intake/exhaust OCV; BMW VANOS solenoid
Device pinout
Looking into the solenoid. Two cavities — source and return.
- Connector: 2-way on the solenoid
- Layout (looking into the part): 1 · 2; polarising key top
| Device pin | Function | Type | Race Core | TunerStudio |
|---|---|---|---|---|
| 1 | 12 V from ECU high-side (intake / bank 1) | High-side | A2 | Highside 1 |
| 2 | Power ground (head) | Ground | Cylinder head / block | — |
Wiring notes
- Bank / cam map: Highside 1 A2 intake / bank 1, Highside 2 A1 exhaust / bank 2, Highside 3 A13 VVT 3, Highside 4 A14 VVT 4 or boost.
- Some OEM valves are low-side with 12 V from the main relay. That also works — land 12 V on pin 1 from the main-relay rail and pin 2 on a spare low-side. Do not mix high-side and low-side on one valve.
- Filter screen on the nose faces the gallery. A blocked screen is a VVT that never moves, not a PID problem.
- Enable VVT only after trigger, offset, spark and idle are sorted.
Failure modes
- Cam does not move, oil pressure is fine: the screen is blocked, or the high-side and a low-side are both connected and fighting.
- One bank moves, the other pegs: Highside 2 (A1) was left off, or that valve is on Highside 4 which is also the boost solenoid.
- A ground-switched OEM valve stays on: it was wired to a high-side and to ground, so it is powered whenever the high-side is commanded. Pick one drive style.