Mazda 6 Service Manual: Camshaft position (cmp) sensor inspection

Mazda 6 Service Manual / Fuel and emission control systems / Control system / Camshaft position (cmp) sensor inspection

Caution

When foreign material such as an iron chip is on the CMP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect the engine control. Be sure there is no foreign material on the CMP sensor when replacing.

Note

Perform the following inspection only when directed.

Resistance Inspection

1. Disconnect the CMP sensor connector.

2. Measure the resistance between CMP sensor terminals A and B using an ohmmeter.

If not as specified, replace the CMP sensor.
If CMP sensor resistance is okay, 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.

- CMP sensor terminal A (harness-side) and PCM terminal 2M (harness-side)

- CMP sensor terminal B (harness-siede) and PCM terminal 2J (harness-side)

Short circuit

If there is continuity, the circuit is shorted. Repair or replace the harness.

- CMP sensor terminal A (harness-side) and power supply

- CMP sensor terminal A (harness-side) and body GND

- CMP sensor terminal B (harness-side) and power supply

- CMP sensor terminal B (harness-side) and body GND

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 ...

Knock sensor inspection

Note Perform the following test only when directed. Resistance Inspection 1. Turn the ignition switch to LOCK. 2. Disconnect the knock sensor connector. 3. Measure the resistance between the ...

Other materials:

Mazda 6 Service Manual: Removing a Flat Tire
1. Loosen the lug nuts by turning them counterclockwise one turn each, but do not remove any lug nuts until the tire has been raised off the ground. 2. Place the jack on the ground. 3. Turn the jack screw in the direction shown in the figure and adjust the jack head so that it is close to th ...

Mazda 6 Service Manual: Supplier identification procedure
Note When asking the supplier (service center) for repair or replacement, verify which supplier the module belongs to and enter in the Audio Repair Order Form. Identification With Printed Numbers/Label 1. Remove the audio unit. 2. Verify the supplier name written on the label attached ...