Except California Models
OXYGEN SENSOR INSPECTION1. Allow the engine to warm up to normal operating temperature
2. Inspect Feedback Voltage.
Connect the positive (+) tester probe of a voltmeter to terminal VF1 of the data link connector (DLC) 1, and negative (-) tester probe to terminal E1. Perform the test as described in the following image.
HINT: Use a jumper wire (SST 09843-18020) when connecting between terminals TE1 and E1 of the DLC1.