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P1839 POSITION SWITCH ON DLN-227 < DTC/CIRCUIT DIAGNOSIS > [REAR FINAL DRIVE: M226 (ELD) ] C E F G H I J K L M A B DLN N O P Check voltage between differential lock position switch connector C16 terminal 1 and ground. Is the inspection result normal? YES >> GO TO 4. NO >> GO TO 5. 4. CHECK GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Check continuity between differential lock position switch har- ness connector C16 terminal 3 and ground. Is the inspection result normal? YES >> Replace the differential lock control unit. Refer to 253, "Removal and Installation" NO >> Repair harness or connector. 5. CHECK HARNESS BETWEEN DIFFERENTIAL LOCK CONTROL UNIT AND DIFFERENTIAL LOCK PO- SITION SWITCH 1. Turn ignition switch OFF. 2. Disconnect differential lock control unit harness connector B77. 3. Check continuity between differential lock control unit harness connector B77 (A) terminal 20 and differential lock position switch harness connector C16 (B) terminal 1. 4. Check continuity between differential lock control unit harness connector B77 (A) terminal 20 and ground. Is the inspection result normal? YES >> Replace differential lock control unit. Refer to DLN-253, "Removal and Installation" . NO >> Repair harness or connector. (+) (-) Voltage (Approx.) Connector Terminal C16 1 Ground Battery voltage AWDIA0391ZZ Connector Terminal — Continuity C16 3 Ground Yes AWDIA0392ZZ Connector Terminal Connector Terminal Continuity B77 (A) 20 C16 (B) 1 Yes Connector Terminal Ground No B77 (A) 20 AWDIA0393ZZ |