DTC P0522

DTC P0522  : Rocker Arm Oil Pressure Sensor 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. Check the parameter (s) below with the HDS.

   Signal	Malfunction Threshold		Current conditions
   	Values	Unit	Values	Unit
   (ROCKER ARM) OIL PRESSURE SENSOR (B)	Less than 0.18	V

   Do the current condition (s) match the threshold?

   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 rocker arm oil pressure 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 (P-OIL line, others)

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

   -2. Disconnect the following connector.

   Rocker arm oil pressure sensor 3P connector

   -3. Turn the vehicle to the ON mode.

   -4. Check the parameter (s) below with the HDS.

   Signal	Malfunction Threshold		Current conditions
   	Values	Unit	Values	Unit
   (ROCKER ARM) OIL PRESSURE SENSOR (B)	Less than 0.18	V

   Do the current condition (s) match the threshold?

   YES 

   Go to step 4.

   NO 

   Go to step 3.

3. Determine possible failure area (Rocker arm oil pressure sensor, others)

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

   Test condition	Vehicle ON mode
   	Rocker arm oil pressure sensor 3P connector: disconnected
   Test point 1	Rocker arm oil pressure sensor 3P connector No. 1
   Test point 2	Rocker arm oil pressure sensor 3P connector No. 3

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

   Is there about 5.0 V?

   YES 

   Replace the rocker arm oil pressure sensor. Refer to the appropriate service information. .

   NO 

   Go to step 5.

4. Shorted wire check (POIL 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
   	Rocker arm oil pressure sensor 3P connector: disconnected
   	PCM connector C (51P): disconnected
   Test point 1	Rocker arm oil pressure sensor 3P connector No. 2
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short in the POIL wire between the PCM (C48) and the rocker arm oil pressure sensor.

   NO 

   The P-OIL wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P0522 goes away and the PCM was updated, troubleshooting is complete. If DTC P0522 goes away and the PCM was substituted, replace the original PCM .

5. Open wire check (VCC2 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 B (51P)

   -4. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Rocker arm oil pressure sensor 3P connector: disconnected
   	PCM connector B (51P): disconnected
   Test point 1	Rocker arm oil pressure sensor 3P connector No. 3
   Test point 2	PCM connector B (51P) No. 29

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

   Is there continuity?

   YES 

   The VCC2 wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P0522 goes away and the PCM was updated, troubleshooting is complete. If DTC P0522 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Repair an open in the VCC2 wire between the PCM (B29) and the rocker arm oil pressure sensor.