Test Step 2 - (K141) O2 SENSOR 1/2 SIGNAL CIRCUIT
- Turn the ignition off.
- Disconnect the O2 Sensor 1/2 harness connector.
- Ignition on, engine not running.
- With the scan tool, monitor the O2 Sensor 1/2 voltage.
Is the O2 Sensor 1/2 voltage between 4.1 and 5.0 Volts?
Yes
- Go to Test Step 3 - O2 SENSOR
No