MX-5 Miata LS L4-1.8L DOHC (2001)
4. Apply vacuum slowly and verify that continuity between the VTCS vacuum switch terminals changes as indicated in the table using an ohmmeter.
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If not as specified, replace the VTCS vacuum switch.
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If VTCS vacuum switch is okay but PID value is out of specification, perform the "Circuit Open/Short inspection".
5. Reconnect the VTCS vacuum 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 (VTCS vacuum switch connector terminal A and PCM connector terminal 4J through common connector)
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GND circuit (VTCS vacuum switch connector terminal B and GND through common connector)
Short circuit
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If there is no continuity, the circuit is shorted. Repair or replace the harness.
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VTCS vacuum switch connector terminal A and PCM connector terminal 4J through common connector to GND.