POWER STEERING PRESSURE (PSP) SWITCH INSPECTION[AJ (3.0L Duratec)]

id0140a1803100

Continuity Inspection

1.  Disconnect the PSP switch connector.

2.  Start the engine.

3.  Verify the continuity between the PSP switch terminals while rotating the steering wheel.

•  If it cannot be verified, verify that P/S oil pump is normal and replace the PSP switch. (See POWER STEERING PRESSURE (PSP) SWITCH REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)

•  If the monitor item condition/specification (reference) is not within the specification, even though there is no malfunction, perform the “Circuit Open/Short Inspection”.

Circuit Open/Short Inspection

1.  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)

2.  Inspect the following wiring harness for open or short (continuity check).

atraaw00001460

Open circuit

•  If there is no continuity, the circuit is open. Repair or replace the harness.

―  PSP switch terminal A and PCM terminal 31

―  PSP switch terminal B and PCM terminal 91

Short circuit

•  If there is continuity, the circuit is shorted. Repair or replace the harness.

―  PSP switch terminal A and body ground

―  PSP switch terminal A and power supply

―  PSP switch terminal B and power supply