Crankshaft synchronization – Provides camshaft position data to synchronize with crankshaft position.

Cylinder identification – Identifies the specific cylinder (e.g., #1 cylinder) for sequential fuel injection timing.

Injection timing reference – Determines the exact start of injection for each cylinder.

Variable valve timing input (if equipped) – Provides real-time camshaft position data for VVT system control.

Engine phase detection – Detects the current phase of the four-stroke cycle (intake, compression, power, exhaust).

Sequential fuel injection enablement – Allows the ECU to fire injectors in the correct engine firing order.

Glow plug control timing – Helps determine which cylinder's glow plug to activate during cold starts.

Cylinder deactivation reference (if applicable) – Provides position data for systems that deactivate cylinders.

Misfire detection – Helps the ECU identify which specific cylinder is misfiring by comparing cam and crank signals.

Combustion monitoring reference – Aids in analyzing combustion quality per cylinder.

Start-stop system coordination – Ensures the engine restarts in the correct position for smooth, quick starting.

Cam/crank correlation monitoring – Verifies the mechanical timing relationship between the camshaft and crankshaft.

Timing error detection – Detects jumps or slips in the timing belt/chain by identifying signal misalignment.

Fuel pump control reference (for some systems) – Times the operation of the high-pressure fuel pump.

EGR valve timing control – Can assist in precise exhaust gas recirculation valve operation timing.

Boost pressure control reference – May influence turbocharger wastegate or VGT control based on engine cycle phase.

Idle speed control refinement – Provides finer cylinder-specific data for stable idle control.

Diagnostic trouble code (DTC) trigger – A faulty signal will generate specific DTCs (e.g., P0340, P0341).

Emergency limp-home mode enablement – If the sensor fails, the ECU may use a calculated value to allow limited operation.

Signal generation – Typically generates a digital square wave or sinusoidal signal via a Hall effect or magnetic reluctance principle.

Target wheel detection – Reads a notched or toothed wheel on the camshaft (often with one special "sync" tooth).

Voltage signal output – Sends a varying voltage signal to the ECU corresponding to camshaft position.

Frequency generation – The signal frequency changes with engine RPM.

Duty cycle information (for some types) – May provide additional timing data through pulse width modulation.

ECU wake-up signal – In some systems, its signal helps wake the ECU when the starter is engaged.

Immobilizer system synchronization – May be part of the security system's synchronization between ECU and key.

After-treatment system timing – For precise diesel exhaust fluid (DEF) injection or DPF regeneration triggering.

Engine braking system control – Can coordinate exhaust brake or compression release brake operation.

Fan clutch control input – May influence cooling fan engagement logic based on engine load and cycle.

Air conditioning compressor engagement coordination – Prevents AC clutch engagement at inopportune engine moments.

Power take-off (PTO) speed control reference – Provides a stable timing reference for constant PTO speed.