Shadow V6-181 3.0L SOHC VIN 3 FI (1993)
1. Touch one hand to the jumper wire from the O2S signal wire and the other hand to battery positive, hold for 10 to 20 seconds.
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The O2 readings should begin to increase, and the CO reading should decrease.
2. If the readings do not change as described, further testing of the oxygen sensor circuit and/or engine control system will be necessary. SEE
DIAGNOSIS BY SYMPTOM.