P0520-Oil Press Sensor Ckt Malf Signal Voltage Too High - DaimlerChrysler Jeep Grand Cherokee 2002 Service Manual

Symptom:
P0520-OIL PRESS SENSOR CKT MALF SIGNAL VOLTAGE TOO
HIGH
When Monitored and Set Condition:

P0520-OIL PRESS SENSOR CKT MALF SIGNAL VOLTAGE TOO HIGH

When Monitored: With the engine running.
Set Condition: The ECM detects the Oil Pressure Sensor Signal above 4.9 volts for more
than 3 seconds.
ECM - OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
ECM - OIL PRESSURE SENSOR SIGNAL OPEN
ENGINE OIL PRESSURE SENSOR
OIL PRESSURE SENSOR SIGNAL CIRCUIT OPEN
OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
SENSOR GROUND CIRCUIT OPEN
INTERMITTENT CONDITION
TEST
1 NOTE: If DTC P0641 or P0651 is present with this DTC, diagnose DTCs
P0641 and P0651 before diagnosing this DTC.
Turn the ignition on.
With the DRBIII , erase ECM DTCs.
Start the engine several times, letting the engine run for at least 30 seconds at a
time.
With the DRBIII , read ECM DTCs.
Did this DTC set again?
Yes → Go To 2
→ Go To 6
No
2 Turn the ignition off.
Disconnect the Oil Pressure Sensor harness connector.
Turn the ignition on.
Measure the voltage of the Oil Pressure Sensor Signal circuit.
Select the appropriate voltage reading.
Voltage is above 5.5 volts.
Voltage is between 4.7 and 5.4 volts.
Voltage is below 4.7 volts.
POSSIBLE CAUSES
ACTION
Go To 3
Go To 4
Go To 5
DRIVEABILITY - DIESEL
105
APPLICABILITY
All
All