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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 (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.
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