need help with crankshaft position sensor

Asked by Penny May 28, 2016 at 04:11 PM about the 2001 Mazda MX-5 Miata LS

Question type: Maintenance & Repair

Crank position sensor is a 3 wire One hole pickup with black, blue and red
wires pigtail  I need to know resistance and voltage to test my sensor to see if
it is bad.  Can someone help me Please

4 Answers
825

Rod answered 8 years ago

The only test procedure I see for inspecting the crank sensor is to check air gap between the sensor and teeth on the tone ring. Copy and pasted as follows: CRANKSHAFT POSITION (CKP) SENSOR INSPECTION 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. If not as specified, adjust the CKP sensor air gap and inspect as follows: Is any of the four projections of the plate behind the crankshaft pulley twisted or bent. If not adjusted, replace the plate behind the crankshaft pulley (See PLATE REMOVAL/INSTALLATION.) or CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION.) 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} There is also procedure for checking continuity in the wiring harness between the sensor, the computer, fuses and ground.

2 people found this helpful.
Mark helpful

Penny answered 8 years ago

just wanted to say thanks to everyone for all the help. replaced the crankshaft sensor this morning and it started right up. I'm a happy girl now!!!!!

Mark helpful

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