mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

System Troubleshooting|Page 3844 > < System Troubleshooting|Page 3842
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Knock Sensor: Testing and Inspection
Inspection of Fail-Safe Function

Fig. 22  Service connector location, EGI Control Unit

1.

Warm up engine to normal operating temperature.

2.

Disconnect service connector to cancel inhibiting signal from EGI control unit Fig. 22.

Fig. 23  Knock control sensor connector

3.

Disconnect knock sensor connector, Fig. 23, and ensure ignition timing retards approximately 6°.

4.

Reconnect knock sensor connector and ensure ignition timing advances gradually.

System Troubleshooting|Page 3844 > < System Troubleshooting|Page 3842