MX-5 Miata Mazdaspeed L4-1.8L DOHC Turbo (2004)
Power Steering Pressure Switch: Testing and Inspection
POWER STEERING PRESSURE (PSP) SWITCH INSPECTION
Inspection of Continuity
NOTE: Perform the following test only when directed.
1. Inspect as follows if power steering is inoperative:
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POWER STEERING FLUID INSPECTION (See POWER STEERING FLUID INSPECTION)
2. Disconnect the PSP switch connector.
3. Start the engine.
4. Inspect for continuity between PSP switch terminal and GND using an ohmmeter.
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If not as specified, replace the PSP switch.
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If PSP switch is okay but PID value is out of specification, perform the "Circuit Open/Short Inspection".
5. Reconnect the PSP switch connector.
Circuit Open/Short Inspection
Open circuit
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If there is no continuity, the circuit is open. Repair or replace the harness.
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Power circuit (PSP switch connector terminal and PCM connector terminal 4C through common connector.)
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GND circuit (PSP switch GND circuit.)
Short circuit
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If there is continuity, the circuit is shorted. Repair or replace the harness.
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PSP switch connector terminal and PCM connector terminal 4C through common connector to GND.
