O2S - Test Notes and Schematic

Oxygen Sensor Harness Connector:

Enter this Pinpoint Test only when trouble code 15 or 17 is received in Quick Test steps 5 or 6, or when Quick Test step 11 directs you here.

This test is only intended to diagnose the O2S circuit.

NOTE: Code 15 indicates a continuously lean condition; code 17 indicates a continuously rich condition.