Mazda 6 manuals

Mazda 6 Service Manual: Knock sensor inspection

Note

Resistance Inspection

1. Turn the ignition switch to LOCK.

2. Disconnect the knock sensor connector.

3. Measure the resistance between the knock sensor terminals A and B using an ohmmeter.

Specification
Approx. 4.87 megohms

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

- Knock sensor terminal A (harness-side) and PCM terminal 2S (harness-side)

- Knock sensor terminal B (harness-side) and PCM terminal 2P (harness-side)

Short circuit

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

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

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

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

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Knock sensor removal/installation
1. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) 2. Remove the knock sensor attachment bolt to remove the knock sensor. 3. Install in the reverse order of removal. ...

Other materials:

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