Thundermax Oxygen (O2) Sensor Operation Testing Manuel d'utilisateur télécharger pdf (Page 6)

If you are getting a constant AFR reading of 9.30 on both cylinders, the ECM is not

getting a signal from the Data Port on the O2 Module.

How to Check:

 Check plug for connectivity- Make sure to use dielectric grease and that it is

‘Snapped’ together securely.

 Make sure it is plugged into the correct plug on the harness-Wires should

be Black, Gray, Green w/ Violet Stripe

 Test to make sure plug has 12 volts- Using a Voltage Tester, attach

Positive

clip to GRAY, and

Negative

clip to BLACK(ground).

Note: You must use the ‘Ground’ inside the plug to properly test plug.

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Thundermax Oxygen (O2) Sensor Operation Testing Manuel d'utilisateur Page 6