P0328

G : DTC P0327, P0328, P0332, P0333, P1648. KNOCK SENSOR (KS)

G1 : CHECK THE KS SIGNAL WIRE FOR OPEN CIRCUIT

1. Turn the ignition switch to the OFF position.
2. Disconnect the KS sensor electrical connector EN23.
3. Disconnect the PCM electrical connector EN16.
4. Measure the resistance between EN23, pin 1 (N) and EN16, pin 98 (N).

Is the resistance less than 5 ohms?
Yes
Goto G2

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

G2 : CHECK THE KS SIGNAL WIRE FOR SHORT TO BATTERY

1. Turn the ignition switch to the ON position.
2. Check for a voltage between EN23, 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 G3

G3 : CHECK THE KS SIGNAL WIRE FOR A SHORT TO GROUND

1. Measure the resistance between the KS sensor electrical connector EN23, 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
INSTALL a new KS. CLEAR DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new PCM. Before replacing a PCM, contact Dealer technical support.

G4 : CHECK THE KS GROUND CIRCUIT FOR OPEN CIRCUIT

1. Measure the resistance between the KS electrical connector EN23 pin 2 (W) and GROUND.

Is the resistance greater than 5 ohms?
Yes
REPAIR the circuit between EN23, pin 2 (W) and GROUND. CLEAR the DTCs. TEST the system for normal operation.
This circuit includes the PCM. For additional information, refer to wiring diagrams.

No
Goto G5

G5 : CHECK THE KS GROUND LEAD FOR OPEN CIRCUIT

1. Disconnect the KS electrical connector, EN23.
2. Disconnect the PCM electrical connector, EN16.
3. Measure the resistance between EN23, pin2 (W) and EN16, pin 100 (BG).

Is the resistance less than 5 ohms?
Yes
Goto G6

No
REPAIR the circuit between EN23, pin2 (W) and EN16, 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 EN23.
2. Connect the PCM electrical connector EN16.
3. Turn the ignition switch to the ON position.
4. Check for a voltage between EN23, pin 2 (W) and GROUND.

Is the voltage greater than 1 volt?
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 the DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new PCM. Before replacing a PCM, contact Dealer technical support.