Workshop Manual

11.2 Knock Sensor failure
Failure codes: P0324, P0327, P0328
No. Operating steps Result Follow up steps
1 Close the ignition switch, and the engine stops. Next step
Yes Next step 2 Pull out the joint of knock sensor on harness, use a
multimeter to check if both resistance values
between 1# and 2# pins and between 1# pin and
shielded wire (sensor shield) pin of knock sensor
are more than 1MΩ.
No Replace with a new
sensor
Yes Next step 3 Knock on the edge of knock sensor with a small
hammer and check with multimeter if there is
communicating signal output between sensor pin
1# and 2#.
No Replace the sensor
4 Turn on the ignition switch but do not start the
engine.
Next step
Yes Repair or replace
wires
5 Connect an adaptor between ECU and harness, use
a multimeter respectively check if it is break or
short circuit between 19#, 20# pins of ECU and
1#, 2# pins of sensor joint.
No Replace ECU
Note: Generally, knock sensor is not liable to damage. When disassembling and installing the knock
sensor, be careful not to leave dirt on the contact surface of the sensor and the engine body and do
not add any gasket. If the sensor is damaged, it will have an comparatively great effect on
economical efficiency and emission of the engine. After the knock sensor is damaged, the electric
control system of the engine will lock ignition advance angle of the engine at a fixed ignition angle,
so, the acceleration performance of the engine will fall and economical efficiency and emission of
the engine will also be greatly affected.