Toyota Corolla Cross Owners & Service Manuals

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

  • 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

REPLACE OR ADD ENGINE OIL

OK

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

-

Body Electrical > Combination Meter > Data List

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

B

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

OK

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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