Inspection Between Differential Lock Control Unit and Data Link Connector Circuit

1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (connector side and harness side).
   • Harness connector B69
   • Harness connector M40

OK or NG 

OK: GO TO 2.

NG: Repair terminal or connector.

1. Disconnect differential lock control unit connector and harness connector B69.
2. Check continuity between differential lock control unit harness connector (A) and harness connector (B).
   Fig 1: Checking Continuity Between Differential Lock Control Unit Harness Connector (A) And Harness Connector (B)

   Courtesy of NISSAN MOTOR CO., U.S.A.
   CONTINUITY REFERENCE
   
   

   A		B		Continuity
   Connector	Terminal	Connector	Terminal
   B77	5	B69	51J	Yes
   	4		52J	Yes

OK or NG 

OK: GO TO 3.

NG: Repair harness.

Check continuity between harness connector (A) and data link connector (B).

Fig 2: Checking Continuity Between Harness Connector (A) And Data Link Connector (B)

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Connect all the connectors and diagnose again. Refer to "TROUBLE DIAGNOSES WORK FLOW ".

NG: Repair harness.