DTC P0327


DTC P0327	Knock sensor circuit low input
DETECTION CONDITION	• The PCM monitors the input signal from the knock sensor when the engine is running. If the input voltage at PCM terminal 2BA is less than 1.25 V, the PCM determines that the knock sensor circuit has a malfunction. Diagnostic support note • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. • The PENDING CODE is available if the PCM detects the above malfunction condition. • The FREEZE FRAME DATA is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• Knock sensor malfunction • Connector or terminal malfunction • Short to ground circuit between knock sensor terminal A and PCM terminal 2BA


STEP	INSPECTION		ACTION
1	PERFORM DTC CONFIRMATION PROCEDURE • Perform the DTC CONFIRMATION PROCEDURE. (See DTC CONFIRMATION PROCEDURE.) • Is same the DTC present?	Yes	Go to the next step.
1		No	Intermittent concern exists. Go the to INTERMITTENT CONCERN TROUBLESHOOTING procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING.)
2	INSPECT KNOCK SENSOR CONNECTOR TERMINAL • Turn the ignition switch off. • Disconnect the knock sensor connector. • Check for poor connection at terminal A (such as damaged, pulled-out pins, and corrosion). • Is there any malfunction?	Yes	Repair the terminal, then go to Step 6.
2		No	Go to the next step.
3	INSPECT KNOCK SENSOR • Inspect the knock sensor. (See KNOCK SENSOR INSPECTION.) • Is the knock sensor normal?	Yes	Go to the next step.
3		No	Replace the knock sensor, then go to the next step.
4	INSPECT KNOCK SENSOR CIRCUIT FOR SHORT TO GROUND • Inspect the continuity between knock sensor terminal A (wiring harness-side) and body ground. • Is there continuity?	Yes	Repair or the replace suspected wiring harness, then go to Step 6.
4		No	Go to the next step.
5	INSPECT PCM CONNECTOR TERMINAL • Turn the ignition switch off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged, pulled-out pins, and corrosion). • Is there any malfunction?	Yes	Repair the terminal, then go to the next step.
5		No	Go to the next step.
6	VERIFY TROUBLESHOOTING OF DTC P0327 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from memory using WDS or equivalent. • Perform the KOEO/KOER self-test. (See KOEO/KOER SELF-TEST.) • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION.)
6		No	Go to the next step.
7	VERIFY AFTER REPAIR PROCEDURE • Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE.) • Are any DTCs present?	Yes	Go to applicable DTC troubleshooting. (See DTC TABLE.)
7		No	Troubleshooting completed.