Rear
HEATED OXYGEN SENSOR CHECKRequired Special Tools:
MD998464: Test Harness
MB991316: Test Harness
MB991 658: Test Harness Set
1. Disconnect the heated oxygen sensor connector and connect special tool MB991316 to the connector on the heated oxygen sensor side.
2. Make sure that there is continuity [11 - 18 Ohm at 20° C (68° F)] between terminal 1 (red clip of special tool) and terminal 3 (blue clip of special tool) on the heated oxygen sensor connector.
3. If there is no continuity, replace the heated oxygen sensor.
NOTE: If the scan tool does not display the standard value although no abnormality is found by the above mentioned continuity test and harness check, replace the heated oxygen sensor (rear).
NOTE: For removal and installation of the oxygen sensor; Refer to Exhaust Pipe and Main Muffler.