Cherokee 2WD L6-242 4.0L VIN M FI (1987)
Oxygen Sensor: Testing and Inspection
Fig. 7 Oxygen sensor connector terminal identification
Connect a suitable ohmmeter between oxygen sensor electrical connector terminals A and B, Fig. 7. Ohmmeter should indicate 5 to 7 ohms. If an
infinite reading is obtained, replace oxygen sensor. To check oxygen sensor operation, diagnostic tester M.S. 1700 must be used.
