Mazda 6 Service Manual: Crankshaft position (ckp) sensor inspection

Mazda 6 Service Manual / Fuel and emission control systems / Control system / 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. (Continuity check)

Open circuit

If there is no continuity, the circuit is open. Repair or replace the 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, the circuit is shorted. Repair or replace the 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

Engine coolant temperature (ect) sensor inspection

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Crankshaft position (ckp) sensor removal/installation

Removal 1. Perform the following procedure to making the working space. (1) Remove the Front wheel (RH). (2) Remove the splash shield. 2. Disconnect the CKP sensor connector. 3. Remove the ...

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