W/Harness Inspection

P0328 Knock Sensor 1 Circuit High Input

Inspection/Repair - W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
1) Go to "Knock sensor circuit inspection" procedure.

Signal Circuit Inspection

1. Check voltage
(1) Key "OFF".
(2) Disconnect Knock sensor connector.
(3) Key "ON".
(4) Measure the voltage between terminal 1 of knock sensor harness connector and chassis ground.
(5) Measure the voltage between terminal 2 of knock sensor harness connector and chassis ground.
A. Specification : Approx 2.4 V




(6) Is the measured voltage within specification?
YES
1) Go to "Component inspection" procedure.
NO
1) Repair Short to power in signal circuit and then, go to "Verification of Vehicle Repair" procedure.