The combination meter assembly and engine oil level sensor are connected via direct line. The combination meter assembly determines the engine oil level based on the engine oil level sensor signal.
As the engine oil level may be unstable when the engine is cold or running at high speeds, the combination meter assembly receives the engine coolant temperature signal and engine speed signal from the ECM via CAN communication in order to prevent the oil level warnings from being output erroneously.
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
The following troubleshooting procedure is based on the assumption that the SFI system is normal. Confirm that the SFI system is not malfunctioning before performing the following procedure.
for A25B-FXS:
for A25D-FXS:
Remove the engine oil level sensor.
for A25B-FXS:
for A25D-FXS:
Inspect the engine oil level sensor.
for A25B-FXS:
for A25D-FXS:
| Proceed to |
|---|
| OK |
| NG |
OK
NG
for A25B-FXS:
for A25D-FXS:
Disconnect the G151 combination meter assembly connector.
Disconnect the C20 engine oil level sensor connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G151-10 (OILW) - C20-1 | Always | Below 1 Ω |
| G151-10 (OILW) or C20-1 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG