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P1811 POWER SUPPLY CIRCUIT FOR TRANSFER CONTROL UNIT DLN-29 < DTC/CIRCUIT DIAGNOSIS > [TRANSFER: ATX14B] C E F G H I J K L M A B DLN N O P OK or NG OK >> GO TO 2. NG >> Check the following. If any items are damaged, repair or replace damaged parts. • 40A fusible link (No. j, located in the fuse and fusible link box). • 10A fuses [No. 18 located in fuse block (J/B)] and No. 59 (located in the fuse and relay box). • Harness for short or open between battery and transfer control unit harness connector M153 terminals 47. • Harness for short or open between ignition switch and transfer control unit harness connector M153 terminal 29. • Harness for short or open between battery and transfer shut off relay harness connector E155 terminal 1 and 3. • Harness for short or open between transfer shut off relay harness connector E155 terminal 2 and transfer control unit harness connector M153 terminal 30. • Harness for short or open between transfer shut off relay harness connector E155 terminal 5 and transfer control unit harness connector M152 terminals 16 and 22. • Battery and ignition switch. • Transfer shut off relay. Refer to DLN-29, "Component Inspection" 2. CHECK GROUND CIRCUIT 1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.) 2. Disconnect transfer control unit harness connector. 3. Check continuity between transfer control unit harness connec- tor M152 terminals 3, 6, M153 terminal 45 and ground. Also check harness for short to power. OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to power in harness or con- nectors. 3. CHECK TRANSFER CONTROL UNIT Check transfer control unit input/output signal. Refer to OK or NG OK >> GO TO 4. NG >> Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts. 4. CHECK DTC Perform the self-diagnosis, after driving a vehicle for a while. OK >> Inspection End. NG >> Replace transfer control unit. Refer to DLN-140, "Removal and Installation" Component Inspection INFOID:0000000007357359 1. Turn ignition switch OFF. (Stay for at least 5 seconds.) DLN-19, "Component Parts Location" . Continuity should exist. SDIA2691E August 2012 2012 Pathfinder |