P0340 No Crank Reference Signal at PCM

SYMPTOM
P-0340 NO CRANK REFERENCE SIGNAL AT PCM

WHEN MONITORED
During cranking, with battery voltage between 4.0 volts and 11.6 volts and manifold vacuum present.

SET CONDITION
No signal from the crank position sensor is present during engine cranking or the cam position signal is present with no crank signal.

POSSIBLE CAUSES
- Camshaft position sensor defective
- CKP sensor defective
- CKP sensor defective (6 cyl)
- Crank position sensor ground circuit open
- Crankshaft notches damaged
- Flywheel damaged
- 8-volt supply circuit open
- 8-volt supply circuit short to ground
- CKP sensor signal circuit shorted to ground
- CMP/CKP sensor wiring harness intermittent defect
- CMP/CKP sensor wiring harness observable defect
- Crank position sensor signal circuit open
- PCM defective
- PCM defective (no crank ref sig)