198001370 - 1080BA Check on the operation of the upstream Lambda sensor

STEPCHECK TO BE PERFORMEDREMEDIAL ACTION IF THE CHECK IS NOT OK
1HEATER RESISTANCE CHECKDisconnect the negative battery terminalDisconnect the electrical connection for the upstream Lambda sensorCheck that the resistance at pins 3 and 4 corresponds to 8 +/- 1.6 Ohm at 20°C.Repalce the upstream Lambda sensor    Op. 1080B94 FRONT LAMBDA SENSOR TO WITH CATALYTIC CONVERTER - R.R
Connector