Vehicle Speed Signal Check

1. Turn ignition switch OFF.
2. Disconnect AV and NAVI control unit connector and combination meter connector.
3. Check continuity between AV and NAVI control unit harness connector B29 terminal 28 (OR/L) and combination meter harness connector M41 terminal 17 (OR/L).
   1. 28 - 17: Continuity should exist. 
4. Check continuity between AV and NAVI control unit harness connector B29 terminal 28 (OR/L) and ground.
   1. 28 - Ground: Continuity should not exist. 

OK or NG 

1. OK: GO TO 2.
2. NG: Repair harness or connector.

Fig 1: Disconnecting AV And NAVI Control Unit Connector And Combination Meter Connector

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

1. Connect AV and NAVI control unit connector.
2. Turn ignition switch ON.
3. Check voltage between AV and NAVI control unit harness connector B29 terminal 28 (OR/L) and ground.
   1. 28 - Ground: Approx. 5V 

OK or NG 

1. OK: GO TO 3.
2. NG: Replace AV and NAVI control unit

Fig 2: Connecting AV And NAVI Control Unit Connector

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

1. Connect combination meter connector.
2. Drive vehicle at a constant speed.
3. Check signal between AV and NAVI control unit harness connector B29 terminal 28 (OR/L) and ground with CONSULT-II or oscilloscope.
   1. 28-Ground: Refer to  "TERMINALS AND REFERENCE VALUE FOR AV AND NAVI CONTROL UNIT  ".

OK or NG 

1. OK: INSPECTION END
2. NG: Check combination meter system, refer to "VEHICLE SPEED SIGNAL INSPECTION ".

Fig 3: Connecting Combination Meter Connector

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