Power Steering Pressure (PSP) Switch
- Disconnect wire connector from PSP switch on power steering pump. Start engine. Connect ohmmeter between ground and switch terminal. With steering wheel in straight-ahead position, there should be no continuity.
- Turn steering wheel. As steering pressure increases, continuity should exist. If there is no continuity when steering wheel is turned or if there is continuity with steering wheel in straight-ahead position, replace PSP switch.