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Code 32 - Oxygen Sensor (O2S) No. 1 - R/H

NOTE: For ECM harness connector terminal identification, see Figure.
  1. Using a DVOM, check voltage between ground and ECM harness connector terminal A6 with engine idling. Voltage should vary between 0.1 volt and 1.0 volt. If voltage is not as specified, go to next step. If voltage is as specified, check ECM harness connector terminals for good contact. Repair terminals as necessary. If harness connector terminals are okay, replace ECM.
  2. With engine at idle, disconnect oxygen sensor harness connector located on right side of engine. Using a DVOM, check voltage between sensor harness connector terminal No. 4 (White wire) and ground. Voltage should vary between 0.1 volt and 1.0 volt. If voltage is as specified, go to next step. If voltage is not as specified, replace oxygen sensor.
  3. Turn ignition off. Disconnect ECM harness connectors. Using an ohmmeter, check resistance between ECM harness connector terminal A6 and sensor harness connector terminal No. 4 (White wire). Resistance should be zero ohms. Check resistance between sensor harness connector terminal No. 4 (White wire) and ground. Resistance should be one megohm or greater. If resistances are as specified, go to next step. If resistances are not as specified, repair appropriate circuit as necessary.
  4. Disconnect main relay harness connector. Using an ohmmeter, check resistance between main relay harness connector terminal No. 1 (Black/White wire) and sensor harness connector terminal No. 1 (Black/White wire), and between main relay harness connector terminal No. 3 (White/Red wire) and sensor harness connector terminal No. 2 (White/Red wire). Resistance should be zero ohms for both circuits. If resistance is as specified, go to next step. If resistance is not as specified, repair appropriate circuit as necessary.
  5. Turn ignition on. Using a DVOM, check voltage between ground and main relay harness connector terminals No. 2 (Brown/Black wire) and No. 1 (Black/White wire). Voltage should be 10 volts or greater at each terminal. If voltage is as specified, replace main relay. If voltage is not as specified, repair appropriate circuit as necessary.
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