Power Steering Pressure Switch: Testing and Inspection

POWER STEERING PRESSURE (PSP) SWITCH INSPECTION

NOTE: Perform the following inspection only when directed

Continuity Inspection
1. Inspect the following if the power steering is inoperative
- 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 PSP switch terminal A and body GND using an ohmmeter.
- If the PSP switch is okay, but the PID value is out of specification, perform the "Circuit Open/Short Inspection"
- If not as specified, replace the PSP switch (See POWER STEERING OIL PUMP REMOVAL/INSTALLATION).

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
- PSP switch terminal A (harness-side) and PCM terminal 14 (harness-side)

Short circuit
- PSP switch terminal A (harness-side) and power supply
- PSP switch terminal A (harness-side) and body GND