Power Steering Pressure Switch: Testing and Inspection

POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [L3 WITH TC]

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 the PSP switch terminal and ground using a tester.




- If not as specified, replace the PSP switch.
- If the PSP switch is normal, but PID value is out of specification, perform the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection

1. Disconnect the PCM connector.




2. Inspect the following harnesses for an open or short circuit. (Continuity check)

Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- PSP switch terminal and PCM terminal 1Z

Short circuit
- If there is no continuity, there is a short circuit. Repair or replace the wiring harness.
- PSP switch terminal and body ground