Power Steering Pressure Switch: Testing and Inspection

POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [MZI-3.7]

Continuity Inspection

1. Disconnect the PSP switch connector. Overhaul

2. Start the engine.

3. Verify no continuity between PSP switch terminal A and body ground while rotating the steering wheel.






- If there is continuity, verify that power steering oil pump is normal and replace the PSP switch. Overhaul
- 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 negative battery cable. Removal and Replacement

2. Disconnect the PSP switch connector.

3. Disconnect the PCM connector.

4. Inspect the following wiring harness for open or short. (Continuity inspection)

Open circuit

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

- PSP switch terminal A and PCM terminal 1G

Short circuit

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

- PSP switch terminal A and body ground