ENGINE (DIAGNOSTICS)(H4DOTC DIESEL) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC P0182 FUEL TEMPERATURE SENSOR “A” CIRCUIT LOW INPUT

DTC DETECTING CONDITION:

Immediately at fault recognition

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode , and Inspection Mode .

WIRING DIAGRAM:

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1.CHECK CURRENT DATA.

1) Start the engine.

2) Read the data of “Fuel Temp.” using the Subaru Select Monitor.

NOTE:

For detailed operation procedures, refer to “READ CURRENT DATA FOR ENGINE”.

Is the data of “Fuel Temp.” 135°C (275°F)?

Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE:

In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2.CHECK HARNESS BETWEEN ECM AND FUEL TEMPERATURE SENSOR CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from ECM and fuel temperature sensor.

3) Measure the resistance between ECM connector and chassis ground.

Connector & terminal

(B135) No. 31 — Chassis ground:

Is the resistance 1 MΩ or more?

Replace the fuel pump.

Repair the ground short circuit of harness between ECM connector and fuel temperature sensor connector.