Power Steering Pressure Switch: Testing and Inspection
POWER STEERING PRESSURE (PSP) SWITCH INSPECTIONNOTE: Perform the following inspection only when directed
Continuity Inspection
1. Inspect the following if the power steering is inoperative (See POWER STEERING FLUID INSPECTION)
- Power steering fluid level
- Power steering fluid leakage
- Power steering fluid pressure
2. Disconnect the PSP switch connector
3. Start the engine.
4. Inspect for continuity between the PSP switch terminal and GND using an ohmmeter.
- If not as specified, replace the PSP switch.
- If the PSP switch is okay, but PID value is out of specification, perform the "Circuit Open/Short Inspection".
Circuit Open/Short Inspection
1. Disconnect the PCM connector (See PCM REMOVAL/INSTALLATION.)
2. Inspect the following harnesses for open or short circuit. (Continuity check)
Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the harness.
- PSP switch terminal (harness-side) and PCM terminal 1Z (harness-side)
Short circuit
- If there is no continuity, there is a short circuit. Repair or replace the harness
- PSP switch terminal (harness-side) and body GND.