Sub-Crankshaft Position Sensor

In the event optical crankshaft position sensor should fail, sub-crankshaft position sensor acts as its back-up. Sub-crankshaft position sensor consists of a magnetic pick-up and a signal rotor containing 8 machined grooves. Sensor produces a fluctuating AC voltage signal to ECM.

Sensor is capable of producing an RPM signal only, not a cylinder No. 1 TDC signal. While sensor is providing RPM input (during crank angle sensor failure), ECM will operate in a fail-safe mode, resulting in simultaneous rather than sequential fuel injection.