DTC P0523
DTC P0523 : Rocker Arm Oil Pressure Sensor High Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information .
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P0523 Rocker Arm Oil Pressure Sensor High Voltage |
DTC (PGM-FI)
- 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) More than 4.79 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 .
- Determine possible failure area (Rocker arm oil pressure sensor, others)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
Rocker arm oil pressure sensor 3P connector -3. Connect terminals A and B with a jumper wire.
Terminal A Rocker arm oil pressure sensor 3P connector No. 1 Terminal B Rocker arm oil pressure sensor 3P connector No. 2 -4. Turn the vehicle to the ON mode.
-5. Check the parameter (s) below with the HDS.
Signal Malfunction Threshold Current conditions Values Unit Values Unit (ROCKER ARM) OIL PRESSURE SENSOR (B) More than 4.79 V Do the current condition (s) match the threshold?
YES
Go to step 3.
NO
Replace the rocker arm oil pressure sensor. Refer to the appropriate service information. .
- Determine possible failure area (POIL line, SG2 line)
-1. Remove the jumper wire from the rocker arm oil pressure sensor 3P connector.
-2. 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 Is there about 5.0 V?
YES
Go to step 5.
NO
Go to step 4.
- Open wire check (SG2 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. 1 Test point 2 PCM connector B (51P) No. 5 Is there continuity?
YES
The SG2 wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P0523 goes away and the PCM was updated, troubleshooting is complete. If DTC P0523 goes away and the PCM was substituted, replace the original PCM .
NO
Repair an open in the SG2 wire between the PCM (B5) and the rocker arm oil pressure sensor.
- Open 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 PCM connector C (51P) No. 48 Is there continuity?
YES
The POIL wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P0523 goes away and the PCM was updated, troubleshooting is complete. If DTC P0523 goes away and the PCM was substituted, replace the original PCM .
NO
Repair an open in the POIL wire between the PCM (C48) and the rocker arm oil pressure sensor.