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Home >> Mazda >> 2004 >> 6 L4-2.3L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Crankshaft Position Sensor >> Testing and Inspection >> Component Tests and General Diagnostics
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Component Tests and General Diagnostics

CRANKSHAFT POSITION (CKP) SENSOR INSPECTION

NOTE: Perform the following inspection only when directed.

Resistance Inspection
1. Disconnect the CKP sensor connector.
2. Measure the resistance between CKP sensor terminals A and B using an ohmmeter.
- If not as specified, replace the CKP sensor.
- If CKP sensor resistance is okay, but RPM PID value is out of specification, perform the "Circuit Open/Short Inspection".

Specification: 400 - 550 ohms

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION.)




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

Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- CKP sensor terminal A (harness-side) and PCM terminal 2D (harness-side)
- CKP sensor terminal B (harness-side) and PCM terminal 2G (harness-side)

Short circuit
- If there is continuity, there is a short circuit. Repair or replace the wiring harness.
- CKP sensor terminal A (harness-side) and power supply.
- CKP sensor terminal A (harness-side) and body GND.
- CKP sensor terminal B (harness-side) and power supply.
- CKP sensor terminal B (harness-side) and body GND.
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