DTC P0327

DTC P0327  : Knock Sensor Circuit Low Voltage

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Turn the vehicle to the ON mode.

   -5. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P0327 Knock Sensor Circuit Low Voltage

   Is DTC P0327 indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   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 on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

2. Determine possible failure area (knock sensor, others)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   Knock sensor 2P connector

   -3. Turn the vehicle to the ON mode.

   -4. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P0328 Knock Sensor Circuit High Voltage

   Is DTC P0328 indicated?

   YES 

   Replace the knock sensor .

   NO 

   Go to step 3.

3. Shorted wire check (KS line to KSGND line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. Disconnect the following connector.

   PCM connector E (80P)

   -4. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Knock sensor 2P connector: disconnected
   	PCM connector E (80P) disconnected
   Test point 1	Knock sensor 2P connector (female terminals) No. 1:
   Test point 2	Knock sensor 2P connector (female terminals) No. 2:

   Courtesy of HONDA, U.S.A., INC.

   Is there 1 MΩ or more?

   YES 

   Go to step 4.

   NO 

   Repair a short in the KS wire to the KSGND wire between the PCM and the knock sensor.

4. Shorted wire check (KS line)

   -1. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Knock sensor 2P connector: disconnected

   	PCM connector E (80P) disconnected
   Test point 1	Knock sensor 2P connector (female terminals) No. 2:
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there 1 MΩ or more?

   YES 

   The KS wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM .

   NO 

   Repair a short in the KS wire between the PCM (E35) and the knock sensor.