Toyota Corolla Cross: Engine Oil Level Sensor Circuit
DESCRIPTION
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.
HINT:
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.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- 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.
- When replacing the combination meter assembly, update the ECU security key.
Click here
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- 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 HEV Model: Click here
for Gasoline Model: Click here
PROCEDURE
|
1. | CHECK ENGINE OIL |
(a) Check the engine oil level and engine oil quality is normally .
for HEV Model: Click here
for Gasoline Model: Click here
| NG | .gif) |
REPLACE OR ADD ENGINE OIL |
|
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| 2. |
READ VALUE USING GTS |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Combination Meter > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Oil Level Switch | Engine oil level sensor input |
OFF or ON | OFF: Engine oil level not low ON: Engine oil level low |
- |
|
Tester Display |
|---|
| Oil Level Switch |
|
Result | Proceed to |
|---|---|
|
The Data List item changes correctly |
A |
| The Data List item do not change correctly |
B |
| A |
| REPLACE COMBINATION METER ASSEMBLY |
|
| 3. |
INSPECT ENGINE OIL LEVEL SENSOR |
for HEV Model: Click here
for Gasoline Model: Click here
| NG | |
REPLACE ENGINE OIL LEVEL SENSOR for HEV Model: Click here for Gasoline Model: Click here
|
|
| 4. |
CHECK HARNESS AND CONNECTOR (ENGINE OIL LEVEL SENSOR - COMBINATION METER ASSEMBLY) |
(a) Disconnect the I4 combination meter assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
C38-1 - I4-14 (OILW) |
Always | Below 1 Ω |
|
C38-1 or I4-14 (OILW) - Body ground |
Always | 10 kΩ or higher |
| OK | | REPLACE COMBINATION METER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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