P0328

G : DTC P0327, P0328, P1648. KNOCK SENSOR (KS) RIGHT-HAND

G1 : CHECK THE KS RESISTANCE
1. Disconnect the KS electrical connector, PI20.
2. Measure the resistance between pins 1 and 2 of the KS.

Is the resistance 180 - 220 Kohms?

Yes
Goto G2

No
Install a new Knock Sensor.

G2 : CHECK THE KS SIGNAL WIRE FOR OPEN CIRCUIT
1. Turn the ignition switch to the OFF position.
2. Disconnect the KS sensor electrical connector PI20.
3. Disconnect the PCM electrical connector PI01.
4. Measure the resistance between PI20, pin 1 (N) and PI01, pin 98 (N).

Is the resistance less than 5 ohms?

Yes
Goto G3

No
Repair the circuit. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

G3 : CHECK THE KS SIGNAL WIRE FOR SHORT TO BATTERY
1. Connect the KS sensor electrical connector PI20.
2. Connect the PCM electrical connector PI01.
3. Turn the ignition switch to the ON position.
4. Check for a voltage between PI20, pin 1 (N) and GROUND.

Is a voltage present?

Yes
Repair the short to battery. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

No
Goto G4

G4 : CHECK THE KS SIGNAL WIRE FOR A SHORT TO GROUND
1. Measure the resistance between the KS sensor electrical connector PI20, pin 1 (N) and GROUND.

Is the resistance less than 10,000 ohms?

Yes
Repair the short to GROUND. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

No
Goto G5

G5 : CHECK THE KS GROUND LEAD FOR OPEN CIRCUIT
1. Disconnect the KS electrical connector, PI20.
2. Disconnect the PCM electrical connector, PI01.
3. Measure the resistance between PI20, pin2 (B) and PI01, pin 100 (BG)

Is the resistance less than 5 ohms?

Yes
Goto G6

No
Repair the circuit between PI20, pin2 (B) and PI01, pin 100 (BG) For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

G6 : CHECK THE KS GROUND LEAD FOR SHORT TO BATTERY
1. Connect the KS sensor electrical connector PI20.
2. Connect the PCM electrical connector PI01.
3. Turn the ignition switch to the ON position.
4. Check for a voltage between PI20, pin 1 (N) and GROUND.

Is a voltage present?

Yes
Repair the short to battery. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

No
Install a new KS. CLEAR DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new PCM.