Celica L4-1.8L (1ZZ-FE) (2004)
Knock Sensor: Testing and Inspection
INSPECTION
1. REMOVE THROTTLE BODY
2. REMOVE RADIATOR RESERVOIR
3. REMOVE INTAKE MANIFOLD
4. 1ZZ-FE:
REMOVE KNOCK SENSOR
a. Disconnect the knock sensor connector.
b. Using SST, remove the knock sensor.
SST 09816-30010
5. 2ZZ-GE:
REMOVE KNOCK SENSOR
a. Disconnect the knock sensor connector.
b. Remove the nut and knock sensor.
6. 1ZZ-FE:
INSPECT KNOCK SENSOR
Using an ohmmeter, check that there is continuity between the terminal and body.
If there is continuity, replace the sensor.