P0523 Rocker Arm Oil Pressure Sensor Circuit High Voltage
1.
Problem verification:
Problem verification
?1.
Turn the vehicle to the ON mode.
?2.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
ROCKER ARM OIL PRESSURE SENSOR
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.?
2.
Determine possible failure area (rocker arm oil pressure sensor, others):
Determine possible failure area (rocker arm oil pressure sensor, others)
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 (C31) and the rocker arm oil pressure sensor.?
5.
Open wire check (OPSEN line):
Open wire check (OPSEN 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
The OPSEN 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 OPSEN wire between the PCM (B34) and the rocker arm oil pressure sensor.?