Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INPUT SIGNAL
1. WITHOUT CONSULT-II: GO TO 2.
CHECK INPUT SIGNAL
Without CONSULT-II
1. Turn ignition switch to "OFF" position.
2. Disconnect ABS control unit harness connectors.
3. Disconnect ABS control unit and transfer control unit harness connectors.
4. Check continuity between transfer control unit harness connector terminal 32 and ABS control unit harness connector terminal 9.
  Continuity should exist.
5. Check continuity between transfer control unit harness connector terminal 32, ABS control unit harness connector terminal 9 and body ground.
  No continuity should exist.
  
  Fig 1: Checking Input Signal Without CONSULT-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 3.
2. NG: Repair or replace harness or connector between ABS control unit and transfer control unit.
CHECK COMMUNICATION LINE
Check communication line between ABS control unit and transfer control unit. (Refer to 8. VEHICLE VIBRATES EXCESSIVELY WHEN ABS IS OPERATING .

OK or NG
1. OK: GO TO 4.
2. NG: Check, repair or replace faulty parts.
PERFORM SELF-DIAGNOSIS AGAIN
After driving for a while, perform self-diagnosis again. Refer to "TROUBLE DIAGNOSIS WITHOUT CONSULT-II ".

OK or NG
1. OK: INSPECTION END
2. NG:
  1. Perform transfer control unit input/output signal inspection. Refer to "TRANSFER CONTROL UNIT INSPECTION TABLE ", "TROUBLE DIAGNOSIS - GENERAL DESCRIPTION".
  2. If NG, recheck transfer control unit pin terminals for damage or loose connection with harness connector.