Power Steering Pressure Switch: Testing and Inspection

POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [MZI-3.5]

Continuity Inspection

1. Disconnect the PSP switch connector.
2. Start the engine.
3. Verify no continuity between the PSP switch terminals while rotating the steering wheel.
- If there is continuity, verify that P/S oil pump is normal and replace the PSP switch.
- 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.
2. Inspect the following wiring harness for open or short. (Continuity inspection)

Open circuit
- It there is no continuity, the circuit is open. Repair or replace the wiring harness.
- PSP switch terminal A and PCM terminal 21

Short circuit
- It there is continuity, the circuit is shorted. Repair or replace the wiring harness.
- PSP switch terminal A and body ground