Diagnostic test for oil pressure sensor

[pstephens46]

F150 TXRD

Is there an electrical test for this sensor? I have scanned the SM and don't see it.

Oil pressure readings were all over the scale last week when running on water with YDS.

[boscoe99]

Disconnect the connector to the sender. Measure the input voltage to the sender with the key on. Should be 4.75 ~ 5.25 volts DC. Orange wire terminal to black wire terminal.

Remove the oil pressure sender. Install test harness YB-06869 between the sender and the engine harness connector. Connect volt meter to the pink/white wire connector and to the black wire connector.

Apply pressure to the sender. Check for the following output voltages:

2.5 volts DC at 56.8 psi.
4.5 volts DC at 113.7 psi.

[rodbolt17]

if you see low voltage on the orange wire look at other sensors as well,especially water pressure or speed sensor.

[boscoe99]

As critical as the 5.0 reference voltage is, one would think that it would be monitored by the ECU, with a code being set if it is not within specification. Alas, with a Yamaha it is not.

Why not? Only Yam knows and Yam ain't talking.

[pstephens46]

Disconnect the connector to the sender. Measure the input voltage to the sender with the key on. Should be 4.75 ~ 5.25 volts DC. Orange wire terminal to black wire terminal.

Remove the oil pressure sender. Install test harness YB-06869 between the sender and the engine harness connector. Connect volt meter to the pink/white wire connector and to the black wire connector.

Apply pressure to the sender. Check for the following output voltages:

2.5 volts DC at 56.8 psi.
4.5 volts DC at 113.7 psi.

So this test harness is used for testing oil pressure and air temp sensors?

[boscoe99]

So this test harness is used for testing oil pressure and air temp sensors?

Yes on the oil pressure sensor and no on the air temperature sensor.

[pstephens46]

Google search brought up that number as diagnostic harness for air intake
sensor.

[boscoe99]

Google lies.

But the adapter harness is used for the intake air pressure sensor.

You asked about the intake air temperature sensor.

For an F150TXRD.

[boscoe99]

Here are some sensors from an F150TXRD. Note any differences?

[pstephens46]

Yes. I mistakenly referred to air temp versus pressure.

Pondering a drano treatment for the oil sensor. Hell with the orange wire.

[rodbolt17]

you can also use part # MAR-PAPER-CL-IP.
works well.
I have most the adapters and still use the above part number for testing.