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P1818 ACTUATOR POSITION SWITCH DLN-53 < DTC/CIRCUIT DIAGNOSIS > [TRANSFER: ATX14B] C E F G H I J K L M A B DLN N O P 2. Check voltage between transfer control unit harness connector terminal and ground. OK or NG OK >> GO TO 5. NG >> GO TO 2. 2. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ACTUATOR POSITION SWITCH 1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.) 2. Disconnect transfer control unit harness connector and the transfer control device (actuator position switch) harness connector. 3. Check continuity between the following terminals. - Transfer control unit harness connector M153 terminal 27 and transfer control device (actuator position switch) harness con- nector F58 terminal 23. - Transfer control unit harness connector M153 terminal 44 and transfer control device (actuator position switch) harness con- nector F58 terminal 20. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 3. NG >> Repair or replace damaged parts. 3. CHECK GROUND CIRCUIT 1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.) 2. Disconnect transfer control device (actuator position switch) harness connector. 3. Check continuity between transfer control device (actuator posi- tion switch) harness connector F58 terminal 22 and ground. Also check harness for short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to power in harness or con- nectors. 4. CHECK ACTUATOR POSITION SWITCH 1. Remove transfer control device. Refer to DLN-146, "Removal and Installation" Connector Terminal Condition Voltage (Approx.) M153 27 - Ground • Vehicle stopped ver “N” position • Brake pedal de- pressed 4WD shift switch: 4H, 0V 4WD shift switch: 4LO Battery 44 - Ground • Vehicle stopped ver “N” position • Brake pedal de- pressed 4WD shift switch: 4LO 0V 4WD shift switch: Battery SDIA2715E Continuity should exist. SDIA2716E Continuity should exist. SDIA2717E August 2012 2012 Pathfinder |