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C143B-DIFFERENTIAL/LOCKER SELECT SWITCH CIRCUIT LOW (CONTINUED) 3. (T535) LOCKER SWITCH SENSE CIRCUIT SHORTED TO GROUND Disconnect the FDCM harness connector. Measure the resistance of the (T535) Locker Switch Sense circuit in Is the resistance below 100 ohms? Yes >> Repair the short to ground in the (T535) Locker Switch Sense circuit. Perform FDCM VERIFICATION TEST. No >> Go To 4 4. (T537) LOCKER SWITCH SUPPLY CIRCUIT SHORT TO GROUND Measure the resistance of the (T537) Locker Switch Supply circuit in Is the resistance below 100 ohms? Yes >> Repair the short to ground in the (T537) Locker Switch Supply circuit. Perform FDCM VERIFICATION TEST. No >> Replace the FDCM in accordance with the Service Infor- mation Perform FDCM VERIFICATION TEST. 3 - 8 DIFFERENTIAL & DRIVELINE - ELECTRICAL DIAGNOSTICS DR/DH |