Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the knock sensor and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?
2.
Determine possible failure area (knock sensor, others):
Determine possible failure area (knock sensor, others)
Jump the SCS line with the HDS, and wait more than 1 minute.
?3.
Disconnect the following connector.
PCM connector C (51P)
?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
PCM connector C (51P) disconnected
Knock sensor 2P connector: disconnected
Test point 1
Knock sensor 2P connector No. 1
Test point 2
Knock sensor 2P connector No. 2
Is there continuity?
YES
Repair a short in the KNOCK wire to the KS GND wire between the PCM and the knock sensor.?
NO
Go to step 4.
4.
Shorted wire check (KNOCK line):
Shorted wire check (KNOCK line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
PCM connector C (51P) disconnected
Knock sensor 2P connector: disconnected
Test point 1
Knock sensor 2P connector No. 1
Test point 2
Body ground
Is there continuity?
YES
Repair a short in the KNOCK wire between the PCM (C29) and the knock sensor.?
NO
The KNOCK wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If DTC P0327 goes away and the PCM was updated, troubleshooting is complete. If DTC P0327 goes away and the PCM was substituted, replace the original PCM.?