Circuit Description
The oil level switch is a magnetic reed float style switch which is closed with oil level full and open when oil level is low. With the test conditions met it is normal for the oil level switch to indicate low oil level. This diagnostic monitors the oil level switch input signal, If the test conditions are met and the switch indicates oil level full with no transition of the oil level switch for a specific lenth of time, DTC 1617 will set.
Conditions for Running the DTC
| • | Engine running. |
| • | Vehicle speed is 3 MPH or greater. |
| • | Engine speed is 2000 RPM or greater. |
Conditions for Setting the DTC
Oil level switch indicates full level with no transition of the oil level switch for a specific lenth of time.
Action Taken When the DTC Sets
| • | The Malfunction Indicator Lamp (MIL) will not illuminate. |
| • | No message will be displayed. |
Conditions for Clearing the MIL/DTC
| • | A History DTC will clear after forty consecutive warm-up cycles with no failures of any non-emission related diagnostic test. |
| • | A Last Test Failed (current) DTC will clear when the diagnostic runs and does not fail. |
| • | Use a scan tool to clear DTCs. |
| • | Interrupting PCM battery voltage may or may not clear DTCs. This practice is not recommended. Refer to Clearing Diagnostic Trouble Codes in PCM Description and Operation. |
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Powertrain On-Board Diagnostic (OBD) System Check? | -- | ||
2 | Check the engine Oil level. Is the oil level above the proper operating range? | -- | ||
3 |
Does the scan tool indicate low oil level? | -- | Fault not Present. | |
4 | Disconnect the oil level switch connector. Does the scan tool indicate low oil level? | -- | ||
5 |
Is the resistance the same or less than the value specified? | 10K ohms | ||
6 | Repair the short to ground in oil level input circuit. Is the repair complete? | -- | -- | |
7 | Drain the engine oil to the proper operating range. Is the repair complete? | -- | -- | |
8 | Replace the engine oil level switch. Is the repair complete? | -- | -- | |
9 | Replace the PCM. Refer to Powertrain Control Module Replacement/Programming . Is the repair complete? | -- | -- |
