4.
Measure the capacitance between the terminal 2 and 3.
Standard value : 800~1600 pF |
The knock sensor is a piezoelectric device attached to the cylinder block that senses pressure from engine knocking conditions. This vibrational pressure is then converted into a voltage signal which is delivered as output.If engine knock occurs, ignition timing is retarded to suppress it.
The MIL is ON or the DTC is displayed on the HI-SCAN PRO under the following condition:
● When the knock sensor signal is not detected, even though the engine is in an overload condition. ● When the knock sensor signal is abnormally low. |
Disconnect the knock sensor connector.
Measure the resistance between terminals 2 and 3.
Standard value : about 5MΩ [at 20°C (68°F)] |
If the resistance is zero, replace the knock sensor.
Knock sensor : 16~25Nm (160~250 kg·cm, 11.8~18.4 lb·ft) |
Measure the capacitance between the terminal 2 and 3.
Standard value : 800~1600 pF |
