MX-5 Miata LS L4-1.8L DOHC (2001)
Crankshaft Position Sensor: Component Tests and General Diagnostics
Inspection of Air Gap
NOTE: Perform the following test only when directed.
1. Measure the air gap between each four projections of the plate behind the crankshaft pulley and the CKP sensor using a feeler gauge.
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If not as specified, adjust the CKP sensor air gap and inspect as follows:
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Is any of the four projections of the plate behind the crankshaft pulley twisted or bent.
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If not adjusted, replace the plate behind the crankshaft pulley or CKP sensor.
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If CKP sensor PID value is out of specification, perform the "Circuit Open/Short Inspection".
Specification:
0.5 - 1.5 mm {0.020 - 0.059 in}
2. Reconnect the CKP sensor 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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CKP circuit (CKP sensor connector terminal B and PCM connector terminal 3Y.)
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Power circuit (CKP sensor connector terminal A and main relay terminal D through common connector.)
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GND circuit (CKP sensor connector terminal C and PCM connector terminal 4A through common connector.)
Short circuit
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If there is continuity, the circuit is shorted. Repair or replace the harness.
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CKP sensor connector terminal B and PCM connector terminal 3Y circuit through common connector to GND.
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CKP sensor connector terminal A and main relay terminal D through common connector to GND.