DTC P0522: OIL PRESSURE VOLTAGE TOO LOW
1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC P1488: AUXILIARY 5 VOLT OUTPUT TOO LOW does not exist, go to next step. If DTC P1488: AUXILIARY 5 VOLT OUTPUT TOO LOW exists, perform DTC P1488: AUXILIARY 5 VOLT OUTPUT TOO LOW test.
2. Using scan tool, recheck for any other DTCs. If no other DTCs exist, go to next step. If any other DTCs exist, repair all existing DTCs before continuing.
3. Turn ignition off. Disconnect engine oil pressure sensor connector. Engine oil pressure sensor is located on driver's side of cylinder block, just behind ECM and contains 3-pin connector. See Fig. 48 . ECM is located on driver's side of engine, just in front of fuel transfer pump and contains a 50-pin connector. Turn ignition on with engine off. Using voltmeter, check voltage at terminal "A" (Orange wire) on engine oil pressure sensor connector. If voltage is 4.75-5.25 volts, go to next step. If voltage is not 4.75-5.25 volts, repair Orange wire between ECM and engine oil pressure sensor. Perform TEST VER-2A .
4. Ensure ignition is on with engine off. Using voltmeter, check voltage between terminals "A" (Orange wire) and "B" (Black/Light Blue wire) on engine oil pressure sensor connector. If voltage is 4.75-5.25 volts, go to next step. If voltage is not 4.75-5.25 volts, repair open on Black/Light Blue wire between ECM and engine oil pressure sensor. Perform TEST VER-2A .
5. Ensure ignition is on with engine off and engine oil pressure sensor connector is still disconnected. Using scan tool, read engine oil pressure sensor voltage. Engine oil pressure sensor voltage may also be referred to as oil pressure sensor voltage. If engine oil pressure sensor voltage is .39-.61 volt, go to next step. If engine oil pressure sensor voltage is not .39-.61 volt, replace engine oil pressure sensor. Perform TEST VER-2A .
6. Turn ignition off. Ensure engine oil pressure sensor connector is still disconnected. Disconnect ECM connector. ECM is located on driver's side of engine, just in front of fuel transfer pump and contains a 50-pin connector. Using ohmmeter, check resistance between terminal "C" (Gray/Black wire) on engine oil pressure sensor connector and terminal No. 6 (Gray/Black wire) on ECM connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open on Gray/Black wire between ECM and engine oil pressure sensor. Perform TEST VER-2A .
7. Ensure engine oil pressure sensor connector and ECM connector are still disconnected. Using ohmmeter, check resistance between ground and terminal "C" (Gray/Black wire) on engine oil pressure sensor connector. If resistance is 5 ohms or more, replace ECM. Perform TEST VER-2A . If resistance is less than 5 ohms, repair short to ground on Gray/Black wire between ECM and engine oil pressure sensor. Perform TEST VER-2A .