Code 36, 24X Signal Error: Notes

The 24X crankshaft position sensor is used to improve spark during low engine speeds. Code 36 will set if the engine is running and the PCM detects 6 or more 24X crankshaft sensor reference pulses have not occurred. Code 36 diagnosis occurs once per ignition cycle.

1. The 24X signal RPM should be the same as engine speed up to 2000 RPM, at which time it stops. This test determines if the PCM is putting out a 24X signal.
2. Determines if signal voltage is present at the PCM.
3. Determines is battery voltage is present at sensor input.
4. Applying battery voltage to the 24X pigtail circuit determines pigtail and sensor integrity.
5. Determines ground path continuity.