Suspect map sensor check if its unplugged
check the wiring
replace MAP sensor
oil pressure low
Turn the ignition off.
Disconnect the Oil Pressure Switch harness connector.
Ignition on, engine not running.
Connect a jumper wire to the (G6) Oil Pressure Signal circuit in the Sensor harness connector.
With the scan tool monitor the Oil Pressure Switch state.
Touch the other end of the jumper wire to a known good Ground several times.
Did the Oil Pressure Switch state change from High to Low when connecting and disconnecting the jumper wire to ground?
Replace the Oil Pressure Switch.
Check for a short wire
need manual CHECK IT @
Thursday, November 20th, 2008 AT 6:25 AM