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:
- 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.
2. Inspect the following harnesses for open or short circuit. (Continuity check)
Open circuit
- PSP switch terminal A and PCM terminal 55
Short circuit
- PSP switch terminal A and power supply
- PSP switch terminal A and body GND