Sentra L4-1.8L (QG18DE) SULEV (2003)
Knock Sensor: Testing and Inspection
KNOCK SENSOR
1. Disconnect knock sensor harness connector.
2. Check resistance between terminal 1 and ground.
NOTE: Use an ohmmeter which can measure more than 10 MOhm.
Resistance: 530 - 590 kOhm [at 20 °C (68 °F)]
CAUTION: Discard any knock sensors that have been dropped or physically damaged. Use only new ones.