Toyota Tundra Service Manual: Oil Pressure Gauge Malfunction

DESCRIPTION

The oil pressure sender detects the oil pressure generated when the engine is started. The combination meter determines that the engine is running when the engine speed is 400 rpm or more, and determines that the engine is cranking when the engine speed is 200 rpm or less. The oil pressure receiver gauge detects and indicates the oil pressure applied to the oil pressure sender.

WIRING DIAGRAM

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if a CAN communication system DTC is output (See page ).

Result

Result

Proceed to

CAN communication system DTC is not output

A

CAN communication system DTC is output

B

B

Go to CAN COMMUNICATION SYSTEM

A

2.

PERFORM ACTIVE TEST USING TECHSTREAM (OIL PRESSURE RECEIVER GAUGE)

(a) Operate the Techstream according to the display and select "Active Test" (See page ).

Combination Meter:

Tester Display

Test Part

Control Range

Diagnostic Note

Oil Pressure Meter Operation

Oil pressure receiver gauge

OFF, LOW, 1/4, 1/2, 3/4 or HIGH

Perform the test with the vehicle stopped and engine idling

OK:

Needle indication is normal.

NG

REPLACE COMBINATION METER ASSEMBLY

OK

3.

INSPECT OIL PRESSURE SENDER GAUGE

(a) Disconnect the E11 sender gauge connector.

(b) Apply battery positive (+) voltage to the sender gauge terminal through a test LED.

(c) Check that the LED does not illuminate when the engine is stopped.

(d) Check that the LED flashes when the engine is running. The number of flashes varies with engine speed.

OK:

LED flashes when engine is running.

LED does not illuminate when engine is stopped.

Result

Result

Proceed to

LED operates correctly according to engine condition

A

LED does not operate correctly according to engine condition (for 1UR-FE)

B

LED does not operate correctly according to engine condition (for 3UR-FE)

C

LED does not operate correctly according to engine condition (for 3UR-FBE)

D

B

REPLACE OIL PRESSURE SENDER GAUGE ASSEMBLY

C

REPLACE OIL PRESSURE SENDER GAUGE ASSEMBLY

D

REPLACE OIL PRESSURE SENDER GAUGE ASSEMBLY

A

4.

CHECK HARNESS AND CONNECTOR (COMBINATION METER - OIL PRESSURE SENDER GAUGE)

(a) Disconnect the J28 meter connector.

(b) Disconnect the E11 gauge connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

J28-27 (S) - E11-1

Always

Below 1 Ω

J28-27 (S) or E11-1 - Body ground

Always

10 kΩ or higher

OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    How To Proceed With Troubleshooting

    Operation Check

    See More:

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