DTC P0328

DTC P0328  : Knock Sensor 1 (Bank 1) Circuit High Voltage

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	Freeze Frame
   P0328 Knock Sensor 1 (Bank 1) Circuit High Voltage

   Is DTC P0328 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 knock sensor 1 (Bank 1) and the PCM.

2. Determine possible failure area (knock sensor 1 (Bank 1), others)

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

   -2. Disconnect the following connector.

   Knock sensor 1 (Bank 1) 2P connector

   -3. Turn the vehicle to the ON mode.

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

   Test condition	Vehicle ON mode
   	Knock sensor 1 (Bank 1) 2P connector: disconnected
   Test circuit	KS B1, KSSGB1
   Test point 1	Knock sensor 1 (Bank 1) 2P connector No. 1 (GRN)
   Test point 2	Knock sensor 1 (Bank 1) 2P connector No. 2 (RED)

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

   Is there about 5.0 V?

   YES 

   Replace knock sensor 1 (Bank 1) , then do the repair verification.

   NO 

   Go to step 3.

3. Open wire check (KS B1 line)

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

   Test condition	Vehicle ON mode
   	Knock sensor 1 (Bank 1) 2P connector: disconnected
   Test circuit	KS B1
   Test point 1	Knock sensor 1 (Bank 1) 2P connector No. 2 (RED)
   Test point 2	Body ground

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

   Is there about 5.0 V?

   YES 

   The KS B1 wire is OK. Go to step 5.

   NO 

   Go to step 4.

4. Open wire check (KSB1/KS B1 line)

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

   -2. Jump the SCS line with the HDS.

   -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
   	Knock sensor 1 (Bank 1) 2P connector: disconnected
   	PCM connector C (51P): disconnected
   Test circuit	KSB1, KS B1
   Test point 1	Knock sensor 1 (Bank 1) 2P connector No. 2 (RED)
   Test point 2	PCM connector C (51P) No. 41 (RED)

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

   Is there continuity?

   YES 

   The KSB1/KS B1 wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then do the repair verification.

   NO 

   Repair an open in the KSB1/KS B1 wire between the PCM (C41) and knock sensor 1 (Bank 1), then do the repair verification.

5. Open wire check (KSSGB1 line)

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

   -2. Jump the SCS line with the HDS.

   -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
   	Knock sensor 1 (Bank 1) 2P connector: disconnected
   	PCM connector C (51P): disconnected
   Test circuit	KSSGB1
   Test point 1	Knock sensor 1 (Bank 1) 2P connector No. 1 (GRN)
   Test point 2	PCM connector C (51P) No. 42 (GRN)

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

   Is there continuity?

   YES 

   The KSSGB1 wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then do the repair verification.

   NO 

   Repair an open in the KSSGB1 wire between the PCM (C42) and knock sensor 1 (Bank 1), then do the repair verification.

6. Repair verification

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

   -2. Reconnect all connectors.

   -3. Exit the SCS mode with the HDS.

   -4. Turn the vehicle to the ON mode.

   -5. Reset the PCM with the HDS .

   Reset PCM

   -6. Do the PCM idle learn procedure.

   -7. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P0328 Knock Sensor 1 (Bank 1) Circuit High Voltage

   DTC (PGM-FI)

   Is DTC P0328 indicated?

   YES 

   Check for poor connections or loose terminals at knock sensor 1 (Bank 1) and the PCM. If the PCM was updated, substitute a known-good PCM , then recheck. If the PCM was substituted, go to step 1.

   NO 

   Troubleshooting is complete. If the PCM was substituted, replace the original PCM . If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.