Reatta V6-231 3.8L VIN C SFI (1990)
Oil Level Circuit
DESCRIPTION:
The BCM supplies and internally monitors the voltage level of the circuit at pin 3C11/1D1. The oil level switch provides a single path to ground for the
circuit when the switch is closed. With proper oil level, the switch is closed, and the BCM will detect low voltage. If the oil level is low, the switch opens
(low oil level condition), and the BCM will detect high voltage. Once the BCM has determined that all of the failure conditions have been met, it will
send the "OIL LEVEL IS LOW" message to the IPC.
NOTE: This test is only run at key "ON" with a coolant temperature drop of greater than 15°C. This is to ensure that all oil has drained back into the oil
pan before checking for proper oil level. Care should be taken to meet these conditions before trying to duplicate the complaint.
TEST CONDITIONS:
Ignition "ON."
FAILURE CONDITIONS:
1.
No code B334.
2.
Coolant sensor is in a valid range.
3.
Coolant temperature drop since the last ignition cycle greater than 15°C.
4.
Oil level signal low.
ACTION TAKEN:
Display the "OIL LEVEL IS LOW" light.
DIAGNOSIS:
Erroneous message - Short to ground on circuit 114 or shorted switch.
No message - Open in circuit 114, open in switch, or open in circuit 803.
