Diagnostic Procedure

Malfunction code No. 71 

1. INSPECTION START 

   ABS actuator and electric unit power supply and ground circuit inspection

   Fig 1: Inspecting ABS Actuator And Electric Unit Power Supply And Ground Circuit

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

   : GO TO 2.

2. CHECK CONNECTOR 
   1. Disconnect ABS actuator and electric unit connector.

      Check terminals for damage or loose connection. Then reconnect connector.

   2. Carry out self-diagnosis again.

   Does warning lamp activate again?

   Yes : GO TO 3.

   No : INSPECTION END 

3. CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUIT 

   Check voltage. Refer to "DIAGNOSTIC PROCEDURE ".

   Does battery voltage exist when ignition switch is turned ON?

   Yes : GO TO 4.

   No : Check the following.

   • Harness for open or short between ABS actuator and electric unit and fuse
4. CHECK WARNING LAMP INDICATION 

   Does warning lamp indicate code No. 71 again?

   Yes or No

   Yes : Replace ABS actuator and electric unit. Refer to "ACTUATOR ".

   No : Inspect the system according to the code No.