Basic Inspection 3: RAS Control Unit Power Supply Circuit And Ground Circuit Inspection

CHECK RAS CONTROL UNIT CONNECTOR
Turn ignition switch OFF, disconnect RAS control unit harness connector, and check terminal for deformation, disconnection, looseness, etc.

OK or NG

OK: GO TO 2.

NG: Poor connection of connector terminal. Repair or replace the terminal.
CHECK RAS CONTROL UNIT GROUND CIRCUIT
1. Disconnect RAS control unit harness connector B127, and then check continuity between RAS control unit harness connector B127 and ground.
  Terminal 34 - Ground: Continuity
  
  OK or NG
  
  OK: GO TO 3.
  
  NG: Ground circuit open or shorted. Repair or replace any inoperative parts.
  
  Fig 1: Checking Continuity Between RAS Control Unit Harness And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK RAS CONTROL UNIT POWER SUPPLY CIRCUIT
Turn ignition switch ON, and then check voltage between RAS control unit harness connector B127 and ground.

Terminal 27 - Ground: Battery voltage (Approx. 12 V)

OK or NG

OK: Power supply and ground circuit are normal.

NG: Power supply circuit open or shorted. Repair or replace any inoperative parts.

Fig 2: Checking Voltage Between RAS Control Unit Harness And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.