Component Inspection

P0327 Knock Sensor 1 Circuit Low Input

Inspection/Repair - Component Inspection

Component Inspection

1. Check Knock sensor
(1) Substitute with a known - good Knock sensor and check for proper operation.
(2) Is the signal normal?
YES
1) Replace Knock sensor and go to "Verification of Vehicle Repair" procedure.
NO
1) Substitute with a known - good ECM and check for proper operation.
If the problem is corrected, replace ECM and go to "Verification of Vehicle Repair" procedure.

CAUTION:
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM.
Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others